http://git-wip-us.apache.org/repos/asf/hbase-site/blob/e5c3dcd1/devapidocs/src-html/org/apache/hadoop/hbase/io/hfile/HFileReaderImpl.html ---------------------------------------------------------------------- diff --git a/devapidocs/src-html/org/apache/hadoop/hbase/io/hfile/HFileReaderImpl.html b/devapidocs/src-html/org/apache/hadoop/hbase/io/hfile/HFileReaderImpl.html index 5be9775..128a211 100644 --- a/devapidocs/src-html/org/apache/hadoop/hbase/io/hfile/HFileReaderImpl.html +++ b/devapidocs/src-html/org/apache/hadoop/hbase/io/hfile/HFileReaderImpl.html @@ -994,902 +994,908 @@ <span class="sourceLineNo">986</span> return new KeyValue.KeyOnlyKeyValue(keyBuf.array(), keyBuf.arrayOffset()<a name="line.986"></a> <span class="sourceLineNo">987</span> + keyPair.getSecond(), currKeyLen);<a name="line.987"></a> <span class="sourceLineNo">988</span> } else {<a name="line.988"></a> -<span class="sourceLineNo">989</span> return new ByteBufferedKeyOnlyKeyValue(keyBuf, keyPair.getSecond(), currKeyLen);<a name="line.989"></a> -<span class="sourceLineNo">990</span> }<a name="line.990"></a> -<span class="sourceLineNo">991</span> }<a name="line.991"></a> -<span class="sourceLineNo">992</span><a name="line.992"></a> -<span class="sourceLineNo">993</span> private static class ShareableMemoryKeyValue extends SizeCachedKeyValue implements<a name="line.993"></a> -<span class="sourceLineNo">994</span> ShareableMemory {<a name="line.994"></a> -<span class="sourceLineNo">995</span> public ShareableMemoryKeyValue(byte[] bytes, int offset, int length, long seqId) {<a name="line.995"></a> -<span class="sourceLineNo">996</span> super(bytes, offset, length, seqId);<a name="line.996"></a> -<span class="sourceLineNo">997</span> }<a name="line.997"></a> +<span class="sourceLineNo">989</span> // Better to do a copy here instead of holding on to this BB so that<a name="line.989"></a> +<span class="sourceLineNo">990</span> // we could release the blocks referring to this key. This key is specifically used <a name="line.990"></a> +<span class="sourceLineNo">991</span> // in HalfStoreFileReader to get the firstkey and lastkey by creating a new scanner<a name="line.991"></a> +<span class="sourceLineNo">992</span> // every time. So holding onto the BB (incase of DBB) is not advised here.<a name="line.992"></a> +<span class="sourceLineNo">993</span> byte[] key = new byte[currKeyLen];<a name="line.993"></a> +<span class="sourceLineNo">994</span> ByteBufferUtils.copyFromBufferToArray(key, keyBuf, keyPair.getSecond(), 0, currKeyLen);<a name="line.994"></a> +<span class="sourceLineNo">995</span> return new KeyValue.KeyOnlyKeyValue(key, 0, currKeyLen);<a name="line.995"></a> +<span class="sourceLineNo">996</span> }<a name="line.996"></a> +<span class="sourceLineNo">997</span> }<a name="line.997"></a> <span class="sourceLineNo">998</span><a name="line.998"></a> -<span class="sourceLineNo">999</span> @Override<a name="line.999"></a> -<span class="sourceLineNo">1000</span> public Cell cloneToCell() {<a name="line.1000"></a> -<span class="sourceLineNo">1001</span> byte[] copy = Bytes.copy(this.bytes, this.offset, this.length);<a name="line.1001"></a> -<span class="sourceLineNo">1002</span> return new SizeCachedKeyValue(copy, 0, copy.length, getSequenceId());<a name="line.1002"></a> +<span class="sourceLineNo">999</span> private static class ShareableMemoryKeyValue extends SizeCachedKeyValue implements<a name="line.999"></a> +<span class="sourceLineNo">1000</span> ShareableMemory {<a name="line.1000"></a> +<span class="sourceLineNo">1001</span> public ShareableMemoryKeyValue(byte[] bytes, int offset, int length, long seqId) {<a name="line.1001"></a> +<span class="sourceLineNo">1002</span> super(bytes, offset, length, seqId);<a name="line.1002"></a> <span class="sourceLineNo">1003</span> }<a name="line.1003"></a> -<span class="sourceLineNo">1004</span> }<a name="line.1004"></a> -<span class="sourceLineNo">1005</span><a name="line.1005"></a> -<span class="sourceLineNo">1006</span> private static class ShareableMemoryNoTagsKeyValue extends SizeCachedNoTagsKeyValue implements<a name="line.1006"></a> -<span class="sourceLineNo">1007</span> ShareableMemory {<a name="line.1007"></a> -<span class="sourceLineNo">1008</span> public ShareableMemoryNoTagsKeyValue(byte[] bytes, int offset, int length, long seqId) {<a name="line.1008"></a> -<span class="sourceLineNo">1009</span> super(bytes, offset, length, seqId);<a name="line.1009"></a> -<span class="sourceLineNo">1010</span> }<a name="line.1010"></a> +<span class="sourceLineNo">1004</span><a name="line.1004"></a> +<span class="sourceLineNo">1005</span> @Override<a name="line.1005"></a> +<span class="sourceLineNo">1006</span> public Cell cloneToCell() {<a name="line.1006"></a> +<span class="sourceLineNo">1007</span> byte[] copy = Bytes.copy(this.bytes, this.offset, this.length);<a name="line.1007"></a> +<span class="sourceLineNo">1008</span> return new SizeCachedKeyValue(copy, 0, copy.length, getSequenceId());<a name="line.1008"></a> +<span class="sourceLineNo">1009</span> }<a name="line.1009"></a> +<span class="sourceLineNo">1010</span> }<a name="line.1010"></a> <span class="sourceLineNo">1011</span><a name="line.1011"></a> -<span class="sourceLineNo">1012</span> @Override<a name="line.1012"></a> -<span class="sourceLineNo">1013</span> public Cell cloneToCell() {<a name="line.1013"></a> -<span class="sourceLineNo">1014</span> byte[] copy = Bytes.copy(this.bytes, this.offset, this.length);<a name="line.1014"></a> -<span class="sourceLineNo">1015</span> return new SizeCachedNoTagsKeyValue(copy, 0, copy.length, getSequenceId());<a name="line.1015"></a> +<span class="sourceLineNo">1012</span> private static class ShareableMemoryNoTagsKeyValue extends SizeCachedNoTagsKeyValue implements<a name="line.1012"></a> +<span class="sourceLineNo">1013</span> ShareableMemory {<a name="line.1013"></a> +<span class="sourceLineNo">1014</span> public ShareableMemoryNoTagsKeyValue(byte[] bytes, int offset, int length, long seqId) {<a name="line.1014"></a> +<span class="sourceLineNo">1015</span> super(bytes, offset, length, seqId);<a name="line.1015"></a> <span class="sourceLineNo">1016</span> }<a name="line.1016"></a> -<span class="sourceLineNo">1017</span> }<a name="line.1017"></a> -<span class="sourceLineNo">1018</span><a name="line.1018"></a> -<span class="sourceLineNo">1019</span> private static class ShareableMemoryOffheapKeyValue extends OffheapKeyValue implements<a name="line.1019"></a> -<span class="sourceLineNo">1020</span> ShareableMemory {<a name="line.1020"></a> -<span class="sourceLineNo">1021</span> public ShareableMemoryOffheapKeyValue(ByteBuffer buf, int offset, int length,<a name="line.1021"></a> -<span class="sourceLineNo">1022</span> boolean hasTags, long seqId) {<a name="line.1022"></a> -<span class="sourceLineNo">1023</span> super(buf, offset, length, hasTags, seqId);<a name="line.1023"></a> -<span class="sourceLineNo">1024</span> }<a name="line.1024"></a> -<span class="sourceLineNo">1025</span><a name="line.1025"></a> -<span class="sourceLineNo">1026</span> @Override<a name="line.1026"></a> -<span class="sourceLineNo">1027</span> public Cell cloneToCell() {<a name="line.1027"></a> -<span class="sourceLineNo">1028</span> byte[] copy = new byte[this.length];<a name="line.1028"></a> -<span class="sourceLineNo">1029</span> ByteBufferUtils.copyFromBufferToArray(copy, this.buf, this.offset, 0, this.length);<a name="line.1029"></a> -<span class="sourceLineNo">1030</span> return new SizeCachedKeyValue(copy, 0, copy.length, getSequenceId());<a name="line.1030"></a> -<span class="sourceLineNo">1031</span> }<a name="line.1031"></a> -<span class="sourceLineNo">1032</span> }<a name="line.1032"></a> -<span class="sourceLineNo">1033</span><a name="line.1033"></a> -<span class="sourceLineNo">1034</span> @Override<a name="line.1034"></a> -<span class="sourceLineNo">1035</span> public ByteBuffer getValue() {<a name="line.1035"></a> -<span class="sourceLineNo">1036</span> assertSeeked();<a name="line.1036"></a> -<span class="sourceLineNo">1037</span> // Okie to create new Pair. Not used in hot path<a name="line.1037"></a> -<span class="sourceLineNo">1038</span> ObjectIntPair<ByteBuffer> valuePair = new ObjectIntPair<ByteBuffer>();<a name="line.1038"></a> -<span class="sourceLineNo">1039</span> this.blockBuffer.asSubByteBuffer(blockBuffer.position() + KEY_VALUE_LEN_SIZE + currKeyLen,<a name="line.1039"></a> -<span class="sourceLineNo">1040</span> currValueLen, valuePair);<a name="line.1040"></a> -<span class="sourceLineNo">1041</span> ByteBuffer valBuf = valuePair.getFirst().duplicate();<a name="line.1041"></a> -<span class="sourceLineNo">1042</span> valBuf.position(valuePair.getSecond());<a name="line.1042"></a> -<span class="sourceLineNo">1043</span> valBuf.limit(currValueLen + valuePair.getSecond());<a name="line.1043"></a> -<span class="sourceLineNo">1044</span> return valBuf.slice();<a name="line.1044"></a> -<span class="sourceLineNo">1045</span> }<a name="line.1045"></a> -<span class="sourceLineNo">1046</span><a name="line.1046"></a> -<span class="sourceLineNo">1047</span> protected void setNonSeekedState() {<a name="line.1047"></a> -<span class="sourceLineNo">1048</span> reset();<a name="line.1048"></a> -<span class="sourceLineNo">1049</span> blockBuffer = null;<a name="line.1049"></a> -<span class="sourceLineNo">1050</span> currKeyLen = 0;<a name="line.1050"></a> -<span class="sourceLineNo">1051</span> currValueLen = 0;<a name="line.1051"></a> -<span class="sourceLineNo">1052</span> currMemstoreTS = 0;<a name="line.1052"></a> -<span class="sourceLineNo">1053</span> currMemstoreTSLen = 0;<a name="line.1053"></a> -<span class="sourceLineNo">1054</span> currTagsLen = 0;<a name="line.1054"></a> -<span class="sourceLineNo">1055</span> }<a name="line.1055"></a> -<span class="sourceLineNo">1056</span><a name="line.1056"></a> -<span class="sourceLineNo">1057</span> /**<a name="line.1057"></a> -<span class="sourceLineNo">1058</span> * Set the position on current backing blockBuffer.<a name="line.1058"></a> -<span class="sourceLineNo">1059</span> */<a name="line.1059"></a> -<span class="sourceLineNo">1060</span> private void positionThisBlockBuffer() {<a name="line.1060"></a> -<span class="sourceLineNo">1061</span> try {<a name="line.1061"></a> -<span class="sourceLineNo">1062</span> blockBuffer.skip(getCurCellSize());<a name="line.1062"></a> -<span class="sourceLineNo">1063</span> } catch (IllegalArgumentException e) {<a name="line.1063"></a> -<span class="sourceLineNo">1064</span> LOG.error("Current pos = " + blockBuffer.position()<a name="line.1064"></a> -<span class="sourceLineNo">1065</span> + "; currKeyLen = " + currKeyLen + "; currValLen = "<a name="line.1065"></a> -<span class="sourceLineNo">1066</span> + currValueLen + "; block limit = " + blockBuffer.limit()<a name="line.1066"></a> -<span class="sourceLineNo">1067</span> + "; HFile name = " + reader.getName()<a name="line.1067"></a> -<span class="sourceLineNo">1068</span> + "; currBlock currBlockOffset = " + this.curBlock.getOffset());<a name="line.1068"></a> -<span class="sourceLineNo">1069</span> throw e;<a name="line.1069"></a> -<span class="sourceLineNo">1070</span> }<a name="line.1070"></a> -<span class="sourceLineNo">1071</span> }<a name="line.1071"></a> -<span class="sourceLineNo">1072</span><a name="line.1072"></a> -<span class="sourceLineNo">1073</span> /**<a name="line.1073"></a> -<span class="sourceLineNo">1074</span> * Set our selves up for the next 'next' invocation, set up next block.<a name="line.1074"></a> -<span class="sourceLineNo">1075</span> * @return True is more to read else false if at the end.<a name="line.1075"></a> -<span class="sourceLineNo">1076</span> * @throws IOException<a name="line.1076"></a> -<span class="sourceLineNo">1077</span> */<a name="line.1077"></a> -<span class="sourceLineNo">1078</span> private boolean positionForNextBlock() throws IOException {<a name="line.1078"></a> -<span class="sourceLineNo">1079</span> // Methods are small so they get inlined because they are 'hot'.<a name="line.1079"></a> -<span class="sourceLineNo">1080</span> long lastDataBlockOffset = reader.getTrailer().getLastDataBlockOffset();<a name="line.1080"></a> -<span class="sourceLineNo">1081</span> if (this.curBlock.getOffset() >= lastDataBlockOffset) {<a name="line.1081"></a> -<span class="sourceLineNo">1082</span> setNonSeekedState();<a name="line.1082"></a> -<span class="sourceLineNo">1083</span> return false;<a name="line.1083"></a> -<span class="sourceLineNo">1084</span> }<a name="line.1084"></a> -<span class="sourceLineNo">1085</span> return isNextBlock();<a name="line.1085"></a> -<span class="sourceLineNo">1086</span> }<a name="line.1086"></a> -<span class="sourceLineNo">1087</span><a name="line.1087"></a> -<span class="sourceLineNo">1088</span><a name="line.1088"></a> -<span class="sourceLineNo">1089</span> private boolean isNextBlock() throws IOException {<a name="line.1089"></a> -<span class="sourceLineNo">1090</span> // Methods are small so they get inlined because they are 'hot'.<a name="line.1090"></a> -<span class="sourceLineNo">1091</span> HFileBlock nextBlock = readNextDataBlock();<a name="line.1091"></a> -<span class="sourceLineNo">1092</span> if (nextBlock == null) {<a name="line.1092"></a> -<span class="sourceLineNo">1093</span> setNonSeekedState();<a name="line.1093"></a> -<span class="sourceLineNo">1094</span> return false;<a name="line.1094"></a> -<span class="sourceLineNo">1095</span> }<a name="line.1095"></a> -<span class="sourceLineNo">1096</span> updateCurrentBlock(nextBlock);<a name="line.1096"></a> -<span class="sourceLineNo">1097</span> return true;<a name="line.1097"></a> -<span class="sourceLineNo">1098</span> }<a name="line.1098"></a> -<span class="sourceLineNo">1099</span><a name="line.1099"></a> -<span class="sourceLineNo">1100</span> private final boolean _next() throws IOException {<a name="line.1100"></a> -<span class="sourceLineNo">1101</span> // Small method so can be inlined. It is a hot one.<a name="line.1101"></a> -<span class="sourceLineNo">1102</span> if (blockBuffer.remaining() <= 0) {<a name="line.1102"></a> -<span class="sourceLineNo">1103</span> return positionForNextBlock();<a name="line.1103"></a> -<span class="sourceLineNo">1104</span> }<a name="line.1104"></a> +<span class="sourceLineNo">1017</span><a name="line.1017"></a> +<span class="sourceLineNo">1018</span> @Override<a name="line.1018"></a> +<span class="sourceLineNo">1019</span> public Cell cloneToCell() {<a name="line.1019"></a> +<span class="sourceLineNo">1020</span> byte[] copy = Bytes.copy(this.bytes, this.offset, this.length);<a name="line.1020"></a> +<span class="sourceLineNo">1021</span> return new SizeCachedNoTagsKeyValue(copy, 0, copy.length, getSequenceId());<a name="line.1021"></a> +<span class="sourceLineNo">1022</span> }<a name="line.1022"></a> +<span class="sourceLineNo">1023</span> }<a name="line.1023"></a> +<span class="sourceLineNo">1024</span><a name="line.1024"></a> +<span class="sourceLineNo">1025</span> private static class ShareableMemoryOffheapKeyValue extends OffheapKeyValue implements<a name="line.1025"></a> +<span class="sourceLineNo">1026</span> ShareableMemory {<a name="line.1026"></a> +<span class="sourceLineNo">1027</span> public ShareableMemoryOffheapKeyValue(ByteBuffer buf, int offset, int length,<a name="line.1027"></a> +<span class="sourceLineNo">1028</span> boolean hasTags, long seqId) {<a name="line.1028"></a> +<span class="sourceLineNo">1029</span> super(buf, offset, length, hasTags, seqId);<a name="line.1029"></a> +<span class="sourceLineNo">1030</span> }<a name="line.1030"></a> +<span class="sourceLineNo">1031</span><a name="line.1031"></a> +<span class="sourceLineNo">1032</span> @Override<a name="line.1032"></a> +<span class="sourceLineNo">1033</span> public Cell cloneToCell() {<a name="line.1033"></a> +<span class="sourceLineNo">1034</span> byte[] copy = new byte[this.length];<a name="line.1034"></a> +<span class="sourceLineNo">1035</span> ByteBufferUtils.copyFromBufferToArray(copy, this.buf, this.offset, 0, this.length);<a name="line.1035"></a> +<span class="sourceLineNo">1036</span> return new SizeCachedKeyValue(copy, 0, copy.length, getSequenceId());<a name="line.1036"></a> +<span class="sourceLineNo">1037</span> }<a name="line.1037"></a> +<span class="sourceLineNo">1038</span> }<a name="line.1038"></a> +<span class="sourceLineNo">1039</span><a name="line.1039"></a> +<span class="sourceLineNo">1040</span> @Override<a name="line.1040"></a> +<span class="sourceLineNo">1041</span> public ByteBuffer getValue() {<a name="line.1041"></a> +<span class="sourceLineNo">1042</span> assertSeeked();<a name="line.1042"></a> +<span class="sourceLineNo">1043</span> // Okie to create new Pair. Not used in hot path<a name="line.1043"></a> +<span class="sourceLineNo">1044</span> ObjectIntPair<ByteBuffer> valuePair = new ObjectIntPair<ByteBuffer>();<a name="line.1044"></a> +<span class="sourceLineNo">1045</span> this.blockBuffer.asSubByteBuffer(blockBuffer.position() + KEY_VALUE_LEN_SIZE + currKeyLen,<a name="line.1045"></a> +<span class="sourceLineNo">1046</span> currValueLen, valuePair);<a name="line.1046"></a> +<span class="sourceLineNo">1047</span> ByteBuffer valBuf = valuePair.getFirst().duplicate();<a name="line.1047"></a> +<span class="sourceLineNo">1048</span> valBuf.position(valuePair.getSecond());<a name="line.1048"></a> +<span class="sourceLineNo">1049</span> valBuf.limit(currValueLen + valuePair.getSecond());<a name="line.1049"></a> +<span class="sourceLineNo">1050</span> return valBuf.slice();<a name="line.1050"></a> +<span class="sourceLineNo">1051</span> }<a name="line.1051"></a> +<span class="sourceLineNo">1052</span><a name="line.1052"></a> +<span class="sourceLineNo">1053</span> protected void setNonSeekedState() {<a name="line.1053"></a> +<span class="sourceLineNo">1054</span> reset();<a name="line.1054"></a> +<span class="sourceLineNo">1055</span> blockBuffer = null;<a name="line.1055"></a> +<span class="sourceLineNo">1056</span> currKeyLen = 0;<a name="line.1056"></a> +<span class="sourceLineNo">1057</span> currValueLen = 0;<a name="line.1057"></a> +<span class="sourceLineNo">1058</span> currMemstoreTS = 0;<a name="line.1058"></a> +<span class="sourceLineNo">1059</span> currMemstoreTSLen = 0;<a name="line.1059"></a> +<span class="sourceLineNo">1060</span> currTagsLen = 0;<a name="line.1060"></a> +<span class="sourceLineNo">1061</span> }<a name="line.1061"></a> +<span class="sourceLineNo">1062</span><a name="line.1062"></a> +<span class="sourceLineNo">1063</span> /**<a name="line.1063"></a> +<span class="sourceLineNo">1064</span> * Set the position on current backing blockBuffer.<a name="line.1064"></a> +<span class="sourceLineNo">1065</span> */<a name="line.1065"></a> +<span class="sourceLineNo">1066</span> private void positionThisBlockBuffer() {<a name="line.1066"></a> +<span class="sourceLineNo">1067</span> try {<a name="line.1067"></a> +<span class="sourceLineNo">1068</span> blockBuffer.skip(getCurCellSize());<a name="line.1068"></a> +<span class="sourceLineNo">1069</span> } catch (IllegalArgumentException e) {<a name="line.1069"></a> +<span class="sourceLineNo">1070</span> LOG.error("Current pos = " + blockBuffer.position()<a name="line.1070"></a> +<span class="sourceLineNo">1071</span> + "; currKeyLen = " + currKeyLen + "; currValLen = "<a name="line.1071"></a> +<span class="sourceLineNo">1072</span> + currValueLen + "; block limit = " + blockBuffer.limit()<a name="line.1072"></a> +<span class="sourceLineNo">1073</span> + "; HFile name = " + reader.getName()<a name="line.1073"></a> +<span class="sourceLineNo">1074</span> + "; currBlock currBlockOffset = " + this.curBlock.getOffset());<a name="line.1074"></a> +<span class="sourceLineNo">1075</span> throw e;<a name="line.1075"></a> +<span class="sourceLineNo">1076</span> }<a name="line.1076"></a> +<span class="sourceLineNo">1077</span> }<a name="line.1077"></a> +<span class="sourceLineNo">1078</span><a name="line.1078"></a> +<span class="sourceLineNo">1079</span> /**<a name="line.1079"></a> +<span class="sourceLineNo">1080</span> * Set our selves up for the next 'next' invocation, set up next block.<a name="line.1080"></a> +<span class="sourceLineNo">1081</span> * @return True is more to read else false if at the end.<a name="line.1081"></a> +<span class="sourceLineNo">1082</span> * @throws IOException<a name="line.1082"></a> +<span class="sourceLineNo">1083</span> */<a name="line.1083"></a> +<span class="sourceLineNo">1084</span> private boolean positionForNextBlock() throws IOException {<a name="line.1084"></a> +<span class="sourceLineNo">1085</span> // Methods are small so they get inlined because they are 'hot'.<a name="line.1085"></a> +<span class="sourceLineNo">1086</span> long lastDataBlockOffset = reader.getTrailer().getLastDataBlockOffset();<a name="line.1086"></a> +<span class="sourceLineNo">1087</span> if (this.curBlock.getOffset() >= lastDataBlockOffset) {<a name="line.1087"></a> +<span class="sourceLineNo">1088</span> setNonSeekedState();<a name="line.1088"></a> +<span class="sourceLineNo">1089</span> return false;<a name="line.1089"></a> +<span class="sourceLineNo">1090</span> }<a name="line.1090"></a> +<span class="sourceLineNo">1091</span> return isNextBlock();<a name="line.1091"></a> +<span class="sourceLineNo">1092</span> }<a name="line.1092"></a> +<span class="sourceLineNo">1093</span><a name="line.1093"></a> +<span class="sourceLineNo">1094</span><a name="line.1094"></a> +<span class="sourceLineNo">1095</span> private boolean isNextBlock() throws IOException {<a name="line.1095"></a> +<span class="sourceLineNo">1096</span> // Methods are small so they get inlined because they are 'hot'.<a name="line.1096"></a> +<span class="sourceLineNo">1097</span> HFileBlock nextBlock = readNextDataBlock();<a name="line.1097"></a> +<span class="sourceLineNo">1098</span> if (nextBlock == null) {<a name="line.1098"></a> +<span class="sourceLineNo">1099</span> setNonSeekedState();<a name="line.1099"></a> +<span class="sourceLineNo">1100</span> return false;<a name="line.1100"></a> +<span class="sourceLineNo">1101</span> }<a name="line.1101"></a> +<span class="sourceLineNo">1102</span> updateCurrentBlock(nextBlock);<a name="line.1102"></a> +<span class="sourceLineNo">1103</span> return true;<a name="line.1103"></a> +<span class="sourceLineNo">1104</span> }<a name="line.1104"></a> <span class="sourceLineNo">1105</span><a name="line.1105"></a> -<span class="sourceLineNo">1106</span> // We are still in the same block.<a name="line.1106"></a> -<span class="sourceLineNo">1107</span> readKeyValueLen();<a name="line.1107"></a> -<span class="sourceLineNo">1108</span> return true;<a name="line.1108"></a> -<span class="sourceLineNo">1109</span> }<a name="line.1109"></a> -<span class="sourceLineNo">1110</span><a name="line.1110"></a> -<span class="sourceLineNo">1111</span> /**<a name="line.1111"></a> -<span class="sourceLineNo">1112</span> * Go to the next key/value in the block section. Loads the next block if<a name="line.1112"></a> -<span class="sourceLineNo">1113</span> * necessary. If successful, {@link #getKey()} and {@link #getValue()} can<a name="line.1113"></a> -<span class="sourceLineNo">1114</span> * be called.<a name="line.1114"></a> -<span class="sourceLineNo">1115</span> *<a name="line.1115"></a> -<span class="sourceLineNo">1116</span> * @return true if successfully navigated to the next key/value<a name="line.1116"></a> -<span class="sourceLineNo">1117</span> */<a name="line.1117"></a> -<span class="sourceLineNo">1118</span> @Override<a name="line.1118"></a> -<span class="sourceLineNo">1119</span> public boolean next() throws IOException {<a name="line.1119"></a> -<span class="sourceLineNo">1120</span> // This is a hot method so extreme measures taken to ensure it is small and inlineable.<a name="line.1120"></a> -<span class="sourceLineNo">1121</span> // Checked by setting: -XX:+UnlockDiagnosticVMOptions -XX:+PrintInlining -XX:+PrintCompilation<a name="line.1121"></a> -<span class="sourceLineNo">1122</span> assertSeeked();<a name="line.1122"></a> -<span class="sourceLineNo">1123</span> positionThisBlockBuffer();<a name="line.1123"></a> -<span class="sourceLineNo">1124</span> return _next();<a name="line.1124"></a> -<span class="sourceLineNo">1125</span> }<a name="line.1125"></a> -<span class="sourceLineNo">1126</span><a name="line.1126"></a> -<span class="sourceLineNo">1127</span> /**<a name="line.1127"></a> -<span class="sourceLineNo">1128</span> * Positions this scanner at the start of the file.<a name="line.1128"></a> -<span class="sourceLineNo">1129</span> *<a name="line.1129"></a> -<span class="sourceLineNo">1130</span> * @return false if empty file; i.e. a call to next would return false and<a name="line.1130"></a> -<span class="sourceLineNo">1131</span> * the current key and value are undefined.<a name="line.1131"></a> -<span class="sourceLineNo">1132</span> * @throws IOException<a name="line.1132"></a> -<span class="sourceLineNo">1133</span> */<a name="line.1133"></a> -<span class="sourceLineNo">1134</span> @Override<a name="line.1134"></a> -<span class="sourceLineNo">1135</span> public boolean seekTo() throws IOException {<a name="line.1135"></a> -<span class="sourceLineNo">1136</span> if (reader == null) {<a name="line.1136"></a> -<span class="sourceLineNo">1137</span> return false;<a name="line.1137"></a> -<span class="sourceLineNo">1138</span> }<a name="line.1138"></a> -<span class="sourceLineNo">1139</span><a name="line.1139"></a> -<span class="sourceLineNo">1140</span> if (reader.getTrailer().getEntryCount() == 0) {<a name="line.1140"></a> -<span class="sourceLineNo">1141</span> // No data blocks.<a name="line.1141"></a> -<span class="sourceLineNo">1142</span> return false;<a name="line.1142"></a> -<span class="sourceLineNo">1143</span> }<a name="line.1143"></a> -<span class="sourceLineNo">1144</span><a name="line.1144"></a> -<span class="sourceLineNo">1145</span> long firstDataBlockOffset = reader.getTrailer().getFirstDataBlockOffset();<a name="line.1145"></a> -<span class="sourceLineNo">1146</span> if (curBlock != null<a name="line.1146"></a> -<span class="sourceLineNo">1147</span> && curBlock.getOffset() == firstDataBlockOffset) {<a name="line.1147"></a> -<span class="sourceLineNo">1148</span> return processFirstDataBlock();<a name="line.1148"></a> +<span class="sourceLineNo">1106</span> private final boolean _next() throws IOException {<a name="line.1106"></a> +<span class="sourceLineNo">1107</span> // Small method so can be inlined. It is a hot one.<a name="line.1107"></a> +<span class="sourceLineNo">1108</span> if (blockBuffer.remaining() <= 0) {<a name="line.1108"></a> +<span class="sourceLineNo">1109</span> return positionForNextBlock();<a name="line.1109"></a> +<span class="sourceLineNo">1110</span> }<a name="line.1110"></a> +<span class="sourceLineNo">1111</span><a name="line.1111"></a> +<span class="sourceLineNo">1112</span> // We are still in the same block.<a name="line.1112"></a> +<span class="sourceLineNo">1113</span> readKeyValueLen();<a name="line.1113"></a> +<span class="sourceLineNo">1114</span> return true;<a name="line.1114"></a> +<span class="sourceLineNo">1115</span> }<a name="line.1115"></a> +<span class="sourceLineNo">1116</span><a name="line.1116"></a> +<span class="sourceLineNo">1117</span> /**<a name="line.1117"></a> +<span class="sourceLineNo">1118</span> * Go to the next key/value in the block section. Loads the next block if<a name="line.1118"></a> +<span class="sourceLineNo">1119</span> * necessary. If successful, {@link #getKey()} and {@link #getValue()} can<a name="line.1119"></a> +<span class="sourceLineNo">1120</span> * be called.<a name="line.1120"></a> +<span class="sourceLineNo">1121</span> *<a name="line.1121"></a> +<span class="sourceLineNo">1122</span> * @return true if successfully navigated to the next key/value<a name="line.1122"></a> +<span class="sourceLineNo">1123</span> */<a name="line.1123"></a> +<span class="sourceLineNo">1124</span> @Override<a name="line.1124"></a> +<span class="sourceLineNo">1125</span> public boolean next() throws IOException {<a name="line.1125"></a> +<span class="sourceLineNo">1126</span> // This is a hot method so extreme measures taken to ensure it is small and inlineable.<a name="line.1126"></a> +<span class="sourceLineNo">1127</span> // Checked by setting: -XX:+UnlockDiagnosticVMOptions -XX:+PrintInlining -XX:+PrintCompilation<a name="line.1127"></a> +<span class="sourceLineNo">1128</span> assertSeeked();<a name="line.1128"></a> +<span class="sourceLineNo">1129</span> positionThisBlockBuffer();<a name="line.1129"></a> +<span class="sourceLineNo">1130</span> return _next();<a name="line.1130"></a> +<span class="sourceLineNo">1131</span> }<a name="line.1131"></a> +<span class="sourceLineNo">1132</span><a name="line.1132"></a> +<span class="sourceLineNo">1133</span> /**<a name="line.1133"></a> +<span class="sourceLineNo">1134</span> * Positions this scanner at the start of the file.<a name="line.1134"></a> +<span class="sourceLineNo">1135</span> *<a name="line.1135"></a> +<span class="sourceLineNo">1136</span> * @return false if empty file; i.e. a call to next would return false and<a name="line.1136"></a> +<span class="sourceLineNo">1137</span> * the current key and value are undefined.<a name="line.1137"></a> +<span class="sourceLineNo">1138</span> * @throws IOException<a name="line.1138"></a> +<span class="sourceLineNo">1139</span> */<a name="line.1139"></a> +<span class="sourceLineNo">1140</span> @Override<a name="line.1140"></a> +<span class="sourceLineNo">1141</span> public boolean seekTo() throws IOException {<a name="line.1141"></a> +<span class="sourceLineNo">1142</span> if (reader == null) {<a name="line.1142"></a> +<span class="sourceLineNo">1143</span> return false;<a name="line.1143"></a> +<span class="sourceLineNo">1144</span> }<a name="line.1144"></a> +<span class="sourceLineNo">1145</span><a name="line.1145"></a> +<span class="sourceLineNo">1146</span> if (reader.getTrailer().getEntryCount() == 0) {<a name="line.1146"></a> +<span class="sourceLineNo">1147</span> // No data blocks.<a name="line.1147"></a> +<span class="sourceLineNo">1148</span> return false;<a name="line.1148"></a> <span class="sourceLineNo">1149</span> }<a name="line.1149"></a> <span class="sourceLineNo">1150</span><a name="line.1150"></a> -<span class="sourceLineNo">1151</span> readAndUpdateNewBlock(firstDataBlockOffset);<a name="line.1151"></a> -<span class="sourceLineNo">1152</span> return true;<a name="line.1152"></a> -<span class="sourceLineNo">1153</span> }<a name="line.1153"></a> -<span class="sourceLineNo">1154</span><a name="line.1154"></a> -<span class="sourceLineNo">1155</span> protected boolean processFirstDataBlock() throws IOException{<a name="line.1155"></a> -<span class="sourceLineNo">1156</span> blockBuffer.rewind();<a name="line.1156"></a> -<span class="sourceLineNo">1157</span> readKeyValueLen();<a name="line.1157"></a> +<span class="sourceLineNo">1151</span> long firstDataBlockOffset = reader.getTrailer().getFirstDataBlockOffset();<a name="line.1151"></a> +<span class="sourceLineNo">1152</span> if (curBlock != null<a name="line.1152"></a> +<span class="sourceLineNo">1153</span> && curBlock.getOffset() == firstDataBlockOffset) {<a name="line.1153"></a> +<span class="sourceLineNo">1154</span> return processFirstDataBlock();<a name="line.1154"></a> +<span class="sourceLineNo">1155</span> }<a name="line.1155"></a> +<span class="sourceLineNo">1156</span><a name="line.1156"></a> +<span class="sourceLineNo">1157</span> readAndUpdateNewBlock(firstDataBlockOffset);<a name="line.1157"></a> <span class="sourceLineNo">1158</span> return true;<a name="line.1158"></a> <span class="sourceLineNo">1159</span> }<a name="line.1159"></a> <span class="sourceLineNo">1160</span><a name="line.1160"></a> -<span class="sourceLineNo">1161</span> protected void readAndUpdateNewBlock(long firstDataBlockOffset) throws IOException,<a name="line.1161"></a> -<span class="sourceLineNo">1162</span> CorruptHFileException {<a name="line.1162"></a> -<span class="sourceLineNo">1163</span> HFileBlock newBlock = reader.readBlock(firstDataBlockOffset, -1, cacheBlocks, pread,<a name="line.1163"></a> -<span class="sourceLineNo">1164</span> isCompaction, true, BlockType.DATA, getEffectiveDataBlockEncoding());<a name="line.1164"></a> -<span class="sourceLineNo">1165</span> if (newBlock.getOffset() < 0) {<a name="line.1165"></a> -<span class="sourceLineNo">1166</span> throw new IOException("Invalid block offset: " + newBlock.getOffset());<a name="line.1166"></a> -<span class="sourceLineNo">1167</span> }<a name="line.1167"></a> -<span class="sourceLineNo">1168</span> updateCurrentBlock(newBlock);<a name="line.1168"></a> -<span class="sourceLineNo">1169</span> }<a name="line.1169"></a> -<span class="sourceLineNo">1170</span><a name="line.1170"></a> -<span class="sourceLineNo">1171</span> protected int loadBlockAndSeekToKey(HFileBlock seekToBlock, Cell nextIndexedKey,<a name="line.1171"></a> -<span class="sourceLineNo">1172</span> boolean rewind, Cell key, boolean seekBefore) throws IOException {<a name="line.1172"></a> -<span class="sourceLineNo">1173</span> if (this.curBlock == null<a name="line.1173"></a> -<span class="sourceLineNo">1174</span> || this.curBlock.getOffset() != seekToBlock.getOffset()) {<a name="line.1174"></a> -<span class="sourceLineNo">1175</span> updateCurrentBlock(seekToBlock);<a name="line.1175"></a> -<span class="sourceLineNo">1176</span> } else if (rewind) {<a name="line.1176"></a> -<span class="sourceLineNo">1177</span> blockBuffer.rewind();<a name="line.1177"></a> -<span class="sourceLineNo">1178</span> }<a name="line.1178"></a> -<span class="sourceLineNo">1179</span><a name="line.1179"></a> -<span class="sourceLineNo">1180</span> // Update the nextIndexedKey<a name="line.1180"></a> -<span class="sourceLineNo">1181</span> this.nextIndexedKey = nextIndexedKey;<a name="line.1181"></a> -<span class="sourceLineNo">1182</span> return blockSeek(key, seekBefore);<a name="line.1182"></a> -<span class="sourceLineNo">1183</span> }<a name="line.1183"></a> -<span class="sourceLineNo">1184</span><a name="line.1184"></a> -<span class="sourceLineNo">1185</span> /**<a name="line.1185"></a> -<span class="sourceLineNo">1186</span> * @param v<a name="line.1186"></a> -<span class="sourceLineNo">1187</span> * @return True if v &lt; 0 or v &gt; current block buffer limit.<a name="line.1187"></a> -<span class="sourceLineNo">1188</span> */<a name="line.1188"></a> -<span class="sourceLineNo">1189</span> protected final boolean checkLen(final int v) {<a name="line.1189"></a> -<span class="sourceLineNo">1190</span> return v < 0 || v > this.blockBuffer.limit();<a name="line.1190"></a> -<span class="sourceLineNo">1191</span> }<a name="line.1191"></a> -<span class="sourceLineNo">1192</span><a name="line.1192"></a> -<span class="sourceLineNo">1193</span> /**<a name="line.1193"></a> -<span class="sourceLineNo">1194</span> * Check key and value lengths are wholesome.<a name="line.1194"></a> -<span class="sourceLineNo">1195</span> */<a name="line.1195"></a> -<span class="sourceLineNo">1196</span> protected final void checkKeyValueLen() {<a name="line.1196"></a> -<span class="sourceLineNo">1197</span> if (checkLen(this.currKeyLen) || checkLen(this.currValueLen)) {<a name="line.1197"></a> -<span class="sourceLineNo">1198</span> throw new IllegalStateException("Invalid currKeyLen " + this.currKeyLen<a name="line.1198"></a> -<span class="sourceLineNo">1199</span> + " or currValueLen " + this.currValueLen + ". Block offset: "<a name="line.1199"></a> -<span class="sourceLineNo">1200</span> + this.curBlock.getOffset() + ", block length: "<a name="line.1200"></a> -<span class="sourceLineNo">1201</span> + this.blockBuffer.limit() + ", position: " + this.blockBuffer.position()<a name="line.1201"></a> -<span class="sourceLineNo">1202</span> + " (without header).");<a name="line.1202"></a> -<span class="sourceLineNo">1203</span> }<a name="line.1203"></a> -<span class="sourceLineNo">1204</span> }<a name="line.1204"></a> -<span class="sourceLineNo">1205</span><a name="line.1205"></a> -<span class="sourceLineNo">1206</span> /**<a name="line.1206"></a> -<span class="sourceLineNo">1207</span> * Updates the current block to be the given {@link HFileBlock}. Seeks to<a name="line.1207"></a> -<span class="sourceLineNo">1208</span> * the the first key/value pair.<a name="line.1208"></a> -<span class="sourceLineNo">1209</span> *<a name="line.1209"></a> -<span class="sourceLineNo">1210</span> * @param newBlock the block to make current<a name="line.1210"></a> -<span class="sourceLineNo">1211</span> */<a name="line.1211"></a> -<span class="sourceLineNo">1212</span> protected void updateCurrentBlock(HFileBlock newBlock) throws IOException {<a name="line.1212"></a> -<span class="sourceLineNo">1213</span> // Set the active block on the reader<a name="line.1213"></a> -<span class="sourceLineNo">1214</span> // sanity check<a name="line.1214"></a> -<span class="sourceLineNo">1215</span> if (newBlock.getBlockType() != BlockType.DATA) {<a name="line.1215"></a> -<span class="sourceLineNo">1216</span> throw new IllegalStateException("ScannerV2 works only on data " + "blocks, got "<a name="line.1216"></a> -<span class="sourceLineNo">1217</span> + newBlock.getBlockType() + "; " + "fileName=" + reader.getName()<a name="line.1217"></a> -<span class="sourceLineNo">1218</span> + ", " + "dataBlockEncoder=" + reader.getDataBlockEncoding() + ", " + "isCompaction="<a name="line.1218"></a> -<span class="sourceLineNo">1219</span> + isCompaction);<a name="line.1219"></a> -<span class="sourceLineNo">1220</span> }<a name="line.1220"></a> -<span class="sourceLineNo">1221</span><a name="line.1221"></a> -<span class="sourceLineNo">1222</span> updateCurrBlockRef(newBlock);<a name="line.1222"></a> -<span class="sourceLineNo">1223</span> blockBuffer = newBlock.getBufferWithoutHeader();<a name="line.1223"></a> -<span class="sourceLineNo">1224</span> readKeyValueLen();<a name="line.1224"></a> -<span class="sourceLineNo">1225</span> blockFetches++;<a name="line.1225"></a> -<span class="sourceLineNo">1226</span><a name="line.1226"></a> -<span class="sourceLineNo">1227</span> // Reset the next indexed key<a name="line.1227"></a> -<span class="sourceLineNo">1228</span> this.nextIndexedKey = null;<a name="line.1228"></a> -<span class="sourceLineNo">1229</span> }<a name="line.1229"></a> -<span class="sourceLineNo">1230</span><a name="line.1230"></a> -<span class="sourceLineNo">1231</span> protected Cell getFirstKeyCellInBlock(HFileBlock curBlock) {<a name="line.1231"></a> -<span class="sourceLineNo">1232</span> ByteBuff buffer = curBlock.getBufferWithoutHeader();<a name="line.1232"></a> -<span class="sourceLineNo">1233</span> // It is safe to manipulate this buffer because we own the buffer object.<a name="line.1233"></a> -<span class="sourceLineNo">1234</span> buffer.rewind();<a name="line.1234"></a> -<span class="sourceLineNo">1235</span> int klen = buffer.getInt();<a name="line.1235"></a> -<span class="sourceLineNo">1236</span> buffer.skip(Bytes.SIZEOF_INT);// Skip value len part<a name="line.1236"></a> -<span class="sourceLineNo">1237</span> ByteBuffer keyBuff = buffer.asSubByteBuffer(klen);<a name="line.1237"></a> -<span class="sourceLineNo">1238</span> if (keyBuff.hasArray()) {<a name="line.1238"></a> -<span class="sourceLineNo">1239</span> return new KeyValue.KeyOnlyKeyValue(keyBuff.array(), keyBuff.arrayOffset()<a name="line.1239"></a> -<span class="sourceLineNo">1240</span> + keyBuff.position(), klen);<a name="line.1240"></a> -<span class="sourceLineNo">1241</span> } else {<a name="line.1241"></a> -<span class="sourceLineNo">1242</span> return new ByteBufferedKeyOnlyKeyValue(keyBuff, keyBuff.position(), klen);<a name="line.1242"></a> -<span class="sourceLineNo">1243</span> }<a name="line.1243"></a> -<span class="sourceLineNo">1244</span> }<a name="line.1244"></a> -<span class="sourceLineNo">1245</span><a name="line.1245"></a> -<span class="sourceLineNo">1246</span> @Override<a name="line.1246"></a> -<span class="sourceLineNo">1247</span> public String getKeyString() {<a name="line.1247"></a> -<span class="sourceLineNo">1248</span> return CellUtil.toString(getKey(), false);<a name="line.1248"></a> -<span class="sourceLineNo">1249</span> }<a name="line.1249"></a> -<span class="sourceLineNo">1250</span><a name="line.1250"></a> -<span class="sourceLineNo">1251</span> @Override<a name="line.1251"></a> -<span class="sourceLineNo">1252</span> public String getValueString() {<a name="line.1252"></a> -<span class="sourceLineNo">1253</span> return ByteBufferUtils.toStringBinary(getValue());<a name="line.1253"></a> -<span class="sourceLineNo">1254</span> }<a name="line.1254"></a> -<span class="sourceLineNo">1255</span><a name="line.1255"></a> -<span class="sourceLineNo">1256</span> public int compareKey(CellComparator comparator, Cell key) {<a name="line.1256"></a> -<span class="sourceLineNo">1257</span> blockBuffer.asSubByteBuffer(blockBuffer.position() + KEY_VALUE_LEN_SIZE, currKeyLen, pair);<a name="line.1257"></a> -<span class="sourceLineNo">1258</span> this.bufBackedKeyOnlyKv.setKey(pair.getFirst(), pair.getSecond(), currKeyLen);<a name="line.1258"></a> -<span class="sourceLineNo">1259</span> return comparator.compareKeyIgnoresMvcc(key, this.bufBackedKeyOnlyKv);<a name="line.1259"></a> +<span class="sourceLineNo">1161</span> protected boolean processFirstDataBlock() throws IOException{<a name="line.1161"></a> +<span class="sourceLineNo">1162</span> blockBuffer.rewind();<a name="line.1162"></a> +<span class="sourceLineNo">1163</span> readKeyValueLen();<a name="line.1163"></a> +<span class="sourceLineNo">1164</span> return true;<a name="line.1164"></a> +<span class="sourceLineNo">1165</span> }<a name="line.1165"></a> +<span class="sourceLineNo">1166</span><a name="line.1166"></a> +<span class="sourceLineNo">1167</span> protected void readAndUpdateNewBlock(long firstDataBlockOffset) throws IOException,<a name="line.1167"></a> +<span class="sourceLineNo">1168</span> CorruptHFileException {<a name="line.1168"></a> +<span class="sourceLineNo">1169</span> HFileBlock newBlock = reader.readBlock(firstDataBlockOffset, -1, cacheBlocks, pread,<a name="line.1169"></a> +<span class="sourceLineNo">1170</span> isCompaction, true, BlockType.DATA, getEffectiveDataBlockEncoding());<a name="line.1170"></a> +<span class="sourceLineNo">1171</span> if (newBlock.getOffset() < 0) {<a name="line.1171"></a> +<span class="sourceLineNo">1172</span> throw new IOException("Invalid block offset: " + newBlock.getOffset());<a name="line.1172"></a> +<span class="sourceLineNo">1173</span> }<a name="line.1173"></a> +<span class="sourceLineNo">1174</span> updateCurrentBlock(newBlock);<a name="line.1174"></a> +<span class="sourceLineNo">1175</span> }<a name="line.1175"></a> +<span class="sourceLineNo">1176</span><a name="line.1176"></a> +<span class="sourceLineNo">1177</span> protected int loadBlockAndSeekToKey(HFileBlock seekToBlock, Cell nextIndexedKey,<a name="line.1177"></a> +<span class="sourceLineNo">1178</span> boolean rewind, Cell key, boolean seekBefore) throws IOException {<a name="line.1178"></a> +<span class="sourceLineNo">1179</span> if (this.curBlock == null<a name="line.1179"></a> +<span class="sourceLineNo">1180</span> || this.curBlock.getOffset() != seekToBlock.getOffset()) {<a name="line.1180"></a> +<span class="sourceLineNo">1181</span> updateCurrentBlock(seekToBlock);<a name="line.1181"></a> +<span class="sourceLineNo">1182</span> } else if (rewind) {<a name="line.1182"></a> +<span class="sourceLineNo">1183</span> blockBuffer.rewind();<a name="line.1183"></a> +<span class="sourceLineNo">1184</span> }<a name="line.1184"></a> +<span class="sourceLineNo">1185</span><a name="line.1185"></a> +<span class="sourceLineNo">1186</span> // Update the nextIndexedKey<a name="line.1186"></a> +<span class="sourceLineNo">1187</span> this.nextIndexedKey = nextIndexedKey;<a name="line.1187"></a> +<span class="sourceLineNo">1188</span> return blockSeek(key, seekBefore);<a name="line.1188"></a> +<span class="sourceLineNo">1189</span> }<a name="line.1189"></a> +<span class="sourceLineNo">1190</span><a name="line.1190"></a> +<span class="sourceLineNo">1191</span> /**<a name="line.1191"></a> +<span class="sourceLineNo">1192</span> * @param v<a name="line.1192"></a> +<span class="sourceLineNo">1193</span> * @return True if v &lt; 0 or v &gt; current block buffer limit.<a name="line.1193"></a> +<span class="sourceLineNo">1194</span> */<a name="line.1194"></a> +<span class="sourceLineNo">1195</span> protected final boolean checkLen(final int v) {<a name="line.1195"></a> +<span class="sourceLineNo">1196</span> return v < 0 || v > this.blockBuffer.limit();<a name="line.1196"></a> +<span class="sourceLineNo">1197</span> }<a name="line.1197"></a> +<span class="sourceLineNo">1198</span><a name="line.1198"></a> +<span class="sourceLineNo">1199</span> /**<a name="line.1199"></a> +<span class="sourceLineNo">1200</span> * Check key and value lengths are wholesome.<a name="line.1200"></a> +<span class="sourceLineNo">1201</span> */<a name="line.1201"></a> +<span class="sourceLineNo">1202</span> protected final void checkKeyValueLen() {<a name="line.1202"></a> +<span class="sourceLineNo">1203</span> if (checkLen(this.currKeyLen) || checkLen(this.currValueLen)) {<a name="line.1203"></a> +<span class="sourceLineNo">1204</span> throw new IllegalStateException("Invalid currKeyLen " + this.currKeyLen<a name="line.1204"></a> +<span class="sourceLineNo">1205</span> + " or currValueLen " + this.currValueLen + ". Block offset: "<a name="line.1205"></a> +<span class="sourceLineNo">1206</span> + this.curBlock.getOffset() + ", block length: "<a name="line.1206"></a> +<span class="sourceLineNo">1207</span> + this.blockBuffer.limit() + ", position: " + this.blockBuffer.position()<a name="line.1207"></a> +<span class="sourceLineNo">1208</span> + " (without header).");<a name="line.1208"></a> +<span class="sourceLineNo">1209</span> }<a name="line.1209"></a> +<span class="sourceLineNo">1210</span> }<a name="line.1210"></a> +<span class="sourceLineNo">1211</span><a name="line.1211"></a> +<span class="sourceLineNo">1212</span> /**<a name="line.1212"></a> +<span class="sourceLineNo">1213</span> * Updates the current block to be the given {@link HFileBlock}. Seeks to<a name="line.1213"></a> +<span class="sourceLineNo">1214</span> * the the first key/value pair.<a name="line.1214"></a> +<span class="sourceLineNo">1215</span> *<a name="line.1215"></a> +<span class="sourceLineNo">1216</span> * @param newBlock the block to make current<a name="line.1216"></a> +<span class="sourceLineNo">1217</span> */<a name="line.1217"></a> +<span class="sourceLineNo">1218</span> protected void updateCurrentBlock(HFileBlock newBlock) throws IOException {<a name="line.1218"></a> +<span class="sourceLineNo">1219</span> // Set the active block on the reader<a name="line.1219"></a> +<span class="sourceLineNo">1220</span> // sanity check<a name="line.1220"></a> +<span class="sourceLineNo">1221</span> if (newBlock.getBlockType() != BlockType.DATA) {<a name="line.1221"></a> +<span class="sourceLineNo">1222</span> throw new IllegalStateException("ScannerV2 works only on data " + "blocks, got "<a name="line.1222"></a> +<span class="sourceLineNo">1223</span> + newBlock.getBlockType() + "; " + "fileName=" + reader.getName()<a name="line.1223"></a> +<span class="sourceLineNo">1224</span> + ", " + "dataBlockEncoder=" + reader.getDataBlockEncoding() + ", " + "isCompaction="<a name="line.1224"></a> +<span class="sourceLineNo">1225</span> + isCompaction);<a name="line.1225"></a> +<span class="sourceLineNo">1226</span> }<a name="line.1226"></a> +<span class="sourceLineNo">1227</span><a name="line.1227"></a> +<span class="sourceLineNo">1228</span> updateCurrBlockRef(newBlock);<a name="line.1228"></a> +<span class="sourceLineNo">1229</span> blockBuffer = newBlock.getBufferWithoutHeader();<a name="line.1229"></a> +<span class="sourceLineNo">1230</span> readKeyValueLen();<a name="line.1230"></a> +<span class="sourceLineNo">1231</span> blockFetches++;<a name="line.1231"></a> +<span class="sourceLineNo">1232</span><a name="line.1232"></a> +<span class="sourceLineNo">1233</span> // Reset the next indexed key<a name="line.1233"></a> +<span class="sourceLineNo">1234</span> this.nextIndexedKey = null;<a name="line.1234"></a> +<span class="sourceLineNo">1235</span> }<a name="line.1235"></a> +<span class="sourceLineNo">1236</span><a name="line.1236"></a> +<span class="sourceLineNo">1237</span> protected Cell getFirstKeyCellInBlock(HFileBlock curBlock) {<a name="line.1237"></a> +<span class="sourceLineNo">1238</span> ByteBuff buffer = curBlock.getBufferWithoutHeader();<a name="line.1238"></a> +<span class="sourceLineNo">1239</span> // It is safe to manipulate this buffer because we own the buffer object.<a name="line.1239"></a> +<span class="sourceLineNo">1240</span> buffer.rewind();<a name="line.1240"></a> +<span class="sourceLineNo">1241</span> int klen = buffer.getInt();<a name="line.1241"></a> +<span class="sourceLineNo">1242</span> buffer.skip(Bytes.SIZEOF_INT);// Skip value len part<a name="line.1242"></a> +<span class="sourceLineNo">1243</span> ByteBuffer keyBuff = buffer.asSubByteBuffer(klen);<a name="line.1243"></a> +<span class="sourceLineNo">1244</span> if (keyBuff.hasArray()) {<a name="line.1244"></a> +<span class="sourceLineNo">1245</span> return new KeyValue.KeyOnlyKeyValue(keyBuff.array(), keyBuff.arrayOffset()<a name="line.1245"></a> +<span class="sourceLineNo">1246</span> + keyBuff.position(), klen);<a name="line.1246"></a> +<span class="sourceLineNo">1247</span> } else {<a name="line.1247"></a> +<span class="sourceLineNo">1248</span> return new ByteBufferedKeyOnlyKeyValue(keyBuff, keyBuff.position(), klen);<a name="line.1248"></a> +<span class="sourceLineNo">1249</span> }<a name="line.1249"></a> +<span class="sourceLineNo">1250</span> }<a name="line.1250"></a> +<span class="sourceLineNo">1251</span><a name="line.1251"></a> +<span class="sourceLineNo">1252</span> @Override<a name="line.1252"></a> +<span class="sourceLineNo">1253</span> public String getKeyString() {<a name="line.1253"></a> +<span class="sourceLineNo">1254</span> return CellUtil.toString(getKey(), false);<a name="line.1254"></a> +<span class="sourceLineNo">1255</span> }<a name="line.1255"></a> +<span class="sourceLineNo">1256</span><a name="line.1256"></a> +<span class="sourceLineNo">1257</span> @Override<a name="line.1257"></a> +<span class="sourceLineNo">1258</span> public String getValueString() {<a name="line.1258"></a> +<span class="sourceLineNo">1259</span> return ByteBufferUtils.toStringBinary(getValue());<a name="line.1259"></a> <span class="sourceLineNo">1260</span> }<a name="line.1260"></a> <span class="sourceLineNo">1261</span><a name="line.1261"></a> -<span class="sourceLineNo">1262</span> @Override<a name="line.1262"></a> -<span class="sourceLineNo">1263</span> public void shipped() throws IOException {<a name="line.1263"></a> -<span class="sourceLineNo">1264</span> this.returnBlocks(false);<a name="line.1264"></a> -<span class="sourceLineNo">1265</span> }<a name="line.1265"></a> -<span class="sourceLineNo">1266</span> }<a name="line.1266"></a> +<span class="sourceLineNo">1262</span> public int compareKey(CellComparator comparator, Cell key) {<a name="line.1262"></a> +<span class="sourceLineNo">1263</span> blockBuffer.asSubByteBuffer(blockBuffer.position() + KEY_VALUE_LEN_SIZE, currKeyLen, pair);<a name="line.1263"></a> +<span class="sourceLineNo">1264</span> this.bufBackedKeyOnlyKv.setKey(pair.getFirst(), pair.getSecond(), currKeyLen);<a name="line.1264"></a> +<span class="sourceLineNo">1265</span> return comparator.compareKeyIgnoresMvcc(key, this.bufBackedKeyOnlyKv);<a name="line.1265"></a> +<span class="sourceLineNo">1266</span> }<a name="line.1266"></a> <span class="sourceLineNo">1267</span><a name="line.1267"></a> -<span class="sourceLineNo">1268</span> public Path getPath() {<a name="line.1268"></a> -<span class="sourceLineNo">1269</span> return path;<a name="line.1269"></a> -<span class="sourceLineNo">1270</span> }<a name="line.1270"></a> -<span class="sourceLineNo">1271</span><a name="line.1271"></a> -<span class="sourceLineNo">1272</span> @Override<a name="line.1272"></a> -<span class="sourceLineNo">1273</span> public DataBlockEncoding getDataBlockEncoding() {<a name="line.1273"></a> -<span class="sourceLineNo">1274</span> return dataBlockEncoder.getDataBlockEncoding();<a name="line.1274"></a> -<span class="sourceLineNo">1275</span> }<a name="line.1275"></a> -<span class="sourceLineNo">1276</span><a name="line.1276"></a> -<span class="sourceLineNo">1277</span> @Override<a name="line.1277"></a> -<span class="sourceLineNo">1278</span> public Configuration getConf() {<a name="line.1278"></a> -<span class="sourceLineNo">1279</span> return conf;<a name="line.1279"></a> -<span class="sourceLineNo">1280</span> }<a name="line.1280"></a> -<span class="sourceLineNo">1281</span><a name="line.1281"></a> -<span class="sourceLineNo">1282</span> @Override<a name="line.1282"></a> -<span class="sourceLineNo">1283</span> public void setConf(Configuration conf) {<a name="line.1283"></a> -<span class="sourceLineNo">1284</span> this.conf = conf;<a name="line.1284"></a> -<span class="sourceLineNo">1285</span> }<a name="line.1285"></a> -<span class="sourceLineNo">1286</span><a name="line.1286"></a> -<span class="sourceLineNo">1287</span> /** Minor versions in HFile starting with this number have hbase checksums */<a name="line.1287"></a> -<span class="sourceLineNo">1288</span> public static final int MINOR_VERSION_WITH_CHECKSUM = 1;<a name="line.1288"></a> -<span class="sourceLineNo">1289</span> /** In HFile minor version that does not support checksums */<a name="line.1289"></a> -<span class="sourceLineNo">1290</span> public static final int MINOR_VERSION_NO_CHECKSUM = 0;<a name="line.1290"></a> -<span class="sourceLineNo">1291</span><a name="line.1291"></a> -<span class="sourceLineNo">1292</span> /** HFile minor version that introduced pbuf filetrailer */<a name="line.1292"></a> -<span class="sourceLineNo">1293</span> public static final int PBUF_TRAILER_MINOR_VERSION = 2;<a name="line.1293"></a> -<span class="sourceLineNo">1294</span><a name="line.1294"></a> -<span class="sourceLineNo">1295</span> /**<a name="line.1295"></a> -<span class="sourceLineNo">1296</span> * The size of a (key length, value length) tuple that prefixes each entry in<a name="line.1296"></a> -<span class="sourceLineNo">1297</span> * a data block.<a name="line.1297"></a> -<span class="sourceLineNo">1298</span> */<a name="line.1298"></a> -<span class="sourceLineNo">1299</span> public final static int KEY_VALUE_LEN_SIZE = 2 * Bytes.SIZEOF_INT;<a name="line.1299"></a> +<span class="sourceLineNo">1268</span> @Override<a name="line.1268"></a> +<span class="sourceLineNo">1269</span> public void shipped() throws IOException {<a name="line.1269"></a> +<span class="sourceLineNo">1270</span> this.returnBlocks(false);<a name="line.1270"></a> +<span class="sourceLineNo">1271</span> }<a name="line.1271"></a> +<span class="sourceLineNo">1272</span> }<a name="line.1272"></a> +<span class="sourceLineNo">1273</span><a name="line.1273"></a> +<span class="sourceLineNo">1274</span> public Path getPath() {<a name="line.1274"></a> +<span class="sourceLineNo">1275</span> return path;<a name="line.1275"></a> +<span class="sourceLineNo">1276</span> }<a name="line.1276"></a> +<span class="sourceLineNo">1277</span><a name="line.1277"></a> +<span class="sourceLineNo">1278</span> @Override<a name="line.1278"></a> +<span class="sourceLineNo">1279</span> public DataBlockEncoding getDataBlockEncoding() {<a name="line.1279"></a> +<span class="sourceLineNo">1280</span> return dataBlockEncoder.getDataBlockEncoding();<a name="line.1280"></a> +<span class="sourceLineNo">1281</span> }<a name="line.1281"></a> +<span class="sourceLineNo">1282</span><a name="line.1282"></a> +<span class="sourceLineNo">1283</span> @Override<a name="line.1283"></a> +<span class="sourceLineNo">1284</span> public Configuration getConf() {<a name="line.1284"></a> +<span class="sourceLineNo">1285</span> return conf;<a name="line.1285"></a> +<span class="sourceLineNo">1286</span> }<a name="line.1286"></a> +<span class="sourceLineNo">1287</span><a name="line.1287"></a> +<span class="sourceLineNo">1288</span> @Override<a name="line.1288"></a> +<span class="sourceLineNo">1289</span> public void setConf(Configuration conf) {<a name="line.1289"></a> +<span class="sourceLineNo">1290</span> this.conf = conf;<a name="line.1290"></a> +<span class="sourceLineNo">1291</span> }<a name="line.1291"></a> +<span class="sourceLineNo">1292</span><a name="line.1292"></a> +<span class="sourceLineNo">1293</span> /** Minor versions in HFile starting with this number have hbase checksums */<a name="line.1293"></a> +<span class="sourceLineNo">1294</span> public static final int MINOR_VERSION_WITH_CHECKSUM = 1;<a name="line.1294"></a> +<span class="sourceLineNo">1295</span> /** In HFile minor version that does not support checksums */<a name="line.1295"></a> +<span class="sourceLineNo">1296</span> public static final int MINOR_VERSION_NO_CHECKSUM = 0;<a name="line.1296"></a> +<span class="sourceLineNo">1297</span><a name="line.1297"></a> +<span class="sourceLineNo">1298</span> /** HFile minor version that introduced pbuf filetrailer */<a name="line.1298"></a> +<span class="sourceLineNo">1299</span> public static final int PBUF_TRAILER_MINOR_VERSION = 2;<a name="line.1299"></a> <span class="sourceLineNo">1300</span><a name="line.1300"></a> -<span class="sourceLineNo">1301</span> private boolean includesMemstoreTS = false;<a name="line.1301"></a> -<span class="sourceLineNo">1302</span> protected boolean decodeMemstoreTS = false;<a name="line.1302"></a> -<span class="sourceLineNo">1303</span><a name="line.1303"></a> -<span class="sourceLineNo">1304</span><a name="line.1304"></a> -<span class="sourceLineNo">1305</span> public boolean isDecodeMemstoreTS() {<a name="line.1305"></a> -<span class="sourceLineNo">1306</span> return this.decodeMemstoreTS;<a name="line.1306"></a> -<span class="sourceLineNo">1307</span> }<a name="line.1307"></a> -<span class="sourceLineNo">1308</span><a name="line.1308"></a> -<span class="sourceLineNo">1309</span> public boolean shouldIncludeMemstoreTS() {<a name="line.1309"></a> -<span class="sourceLineNo">1310</span> return includesMemstoreTS;<a name="line.1310"></a> -<span class="sourceLineNo">1311</span> }<a name="line.1311"></a> -<span class="sourceLineNo">1312</span><a name="line.1312"></a> -<span class="sourceLineNo">1313</span> /**<a name="line.1313"></a> -<span class="sourceLineNo">1314</span> * Retrieve block from cache. Validates the retrieved block's type vs {@code expectedBlockType}<a name="line.1314"></a> -<span class="sourceLineNo">1315</span> * and its encoding vs. {@code expectedDataBlockEncoding}. Unpacks the block as necessary.<a name="line.1315"></a> -<span class="sourceLineNo">1316</span> */<a name="line.1316"></a> -<span class="sourceLineNo">1317</span> private HFileBlock getCachedBlock(BlockCacheKey cacheKey, boolean cacheBlock, boolean useLock,<a name="line.1317"></a> -<span class="sourceLineNo">1318</span> boolean isCompaction, boolean updateCacheMetrics, BlockType expectedBlockType,<a name="line.1318"></a> -<span class="sourceLineNo">1319</span> DataBlockEncoding expectedDataBlockEncoding) throws IOException {<a name="line.1319"></a> -<span class="sourceLineNo">1320</span> // Check cache for block. If found return.<a name="line.1320"></a> -<span class="sourceLineNo">1321</span> if (cacheConf.isBlockCacheEnabled()) {<a name="line.1321"></a> -<span class="sourceLineNo">1322</span> BlockCache cache = cacheConf.getBlockCache();<a name="line.1322"></a> -<span class="sourceLineNo">1323</span> HFileBlock cachedBlock = (HFileBlock) cache.getBlock(cacheKey, cacheBlock, useLock,<a name="line.1323"></a> -<span class="sourceLineNo">1324</span> updateCacheMetrics);<a name="line.1324"></a> -<span class="sourceLineNo">1325</span> if (cachedBlock != null) {<a name="line.1325"></a> -<span class="sourceLineNo">1326</span> if (cacheConf.shouldCacheCompressed(cachedBlock.getBlockType().getCategory())) {<a name="line.1326"></a> -<span class="sourceLineNo">1327</span> HFileBlock compressedBlock = cachedBlock;<a name="line.1327"></a> -<span class="sourceLineNo">1328</span> cachedBlock = compressedBlock.unpack(hfileContext, fsBlockReader);<a name="line.1328"></a> -<span class="sourceLineNo">1329</span> // In case of compressed block after unpacking we can return the compressed block<a name="line.1329"></a> -<span class="sourceLineNo">1330</span> if (compressedBlock != cachedBlock) {<a name="line.1330"></a> -<span class="sourceLineNo">1331</span> cache.returnBlock(cacheKey, compressedBlock);<a name="line.1331"></a> -<span class="sourceLineNo">1332</span> }<a name="line.1332"></a> -<span class="sourceLineNo">1333</span> }<a name="line.1333"></a> -<span class="sourceLineNo">1334</span> validateBlockType(cachedBlock, expectedBlockType);<a name="line.1334"></a> -<span class="sourceLineNo">1335</span><a name="line.1335"></a> -<span class="sourceLineNo">1336</span> if (expectedDataBlockEncoding == null) {<a name="line.1336"></a> -<span class="sourceLineNo">1337</span> return cachedBlock;<a name="line.1337"></a> -<span class="sourceLineNo">1338</span> }<a name="line.1338"></a> -<span class="sourceLineNo">1339</span> DataBlockEncoding actualDataBlockEncoding =<a name="line.1339"></a> -<span class="sourceLineNo">1340</span> cachedBlock.getDataBlockEncoding();<a name="line.1340"></a> -<span class="sourceLineNo">1341</span> // Block types other than data blocks always have<a name="line.1341"></a> -<span class="sourceLineNo">1342</span> // DataBlockEncoding.NONE. To avoid false negative cache misses, only<a name="line.1342"></a> -<span class="sourceLineNo">1343</span> // perform this check if cached block is a data block.<a name="line.1343"></a> -<span class="sourceLineNo">1344</span> if (cachedBlock.getBlockType().isData() &&<a name="line.1344"></a> -<span class="sourceLineNo">1345</span> !actualDataBlockEncoding.equals(expectedDataBlockEncoding)) {<a name="line.1345"></a> -<span class="sourceLineNo">1346</span> // This mismatch may happen if a Scanner, which is used for say a<a name="line.1346"></a> -<span class="sourceLineNo">1347</span> // compaction, tries to read an encoded block from the block cache.<a name="line.1347"></a> -<span class="sourceLineNo">1348</span> // The reverse might happen when an EncodedScanner tries to read<a name="line.1348"></a> -<span class="sourceLineNo">1349</span> // un-encoded blocks which were cached earlier.<a name="line.1349"></a> -<span class="sourceLineNo">1350</span> //<a name="line.1350"></a> -<span class="sourceLineNo">1351</span> // Because returning a data block with an implicit BlockType mismatch<a name="line.1351"></a> -<span class="sourceLineNo">1352</span> // will cause the requesting scanner to throw a disk read should be<a name="line.1352"></a> -<span class="sourceLineNo">1353</span> // forced here. This will potentially cause a significant number of<a name="line.1353"></a> -<span class="sourceLineNo">1354</span> // cache misses, so update so we should keep track of this as it might<a name="line.1354"></a> -<span class="sourceLineNo">1355</span> // justify the work on a CompoundScanner.<a name="line.1355"></a> -<span class="sourceLineNo">1356</span> if (!expectedDataBlockEncoding.equals(DataBlockEncoding.NONE) &&<a name="line.1356"></a> -<span class="sourceLineNo">1357</span> !actualDataBlockEncoding.equals(DataBlockEncoding.NONE)) {<a name="line.1357"></a> -<span class="sourceLineNo">1358</span> // If the block is encoded but the encoding does not match the<a name="line.1358"></a> -<span class="sourceLineNo">1359</span> // expected encoding it is likely the encoding was changed but the<a name="line.1359"></a> -<span class="sourceLineNo">1360</span> // block was not yet evicted. Evictions on file close happen async<a name="line.1360"></a> -<span class="sourceLineNo">1361</span> // so blocks with the old encoding still linger in cache for some<a name="line.1361"></a> -<span class="sourceLineNo">1362</span> // period of time. This event should be rare as it only happens on<a name="line.1362"></a> -<span class="sourceLineNo">1363</span> // schema definition change.<a name="line.1363"></a> -<span class="sourceLineNo">1364</span> LOG.info("Evicting cached block with key " + cacheKey +<a name="line.1364"></a> -<span class="sourceLineNo">1365</span> " because of a data block encoding mismatch" +<a name="line.1365"></a> -<span class="sourceLineNo">1366</span> "; expected: " + expectedDataBlockEncoding +<a name="line.1366"></a> -<span class="sourceLineNo">1367</span> ", actual: " + actualDataBlockEncoding);<a name="line.1367"></a> -<span class="sourceLineNo">1368</span> // This is an error scenario. so here we need to decrement the<a name="line.1368"></a> -<span class="sourceLineNo">1369</span> // count.<a name="line.1369"></a> -<span class="sourceLineNo">1370</span> cache.returnBlock(cacheKey, cachedBlock);<a name="line.1370"></a> -<span class="sourceLineNo">1371</span> cache.evictBlock(cacheKey);<a name="line.1371"></a> -<span class="sourceLineNo">1372</span> }<a name="line.1372"></a> -<span class="sourceLineNo">1373</span> return null;<a name="line.1373"></a> -<span class="sourceLineNo">1374</span> }<a name="line.1374"></a> -<span class="sourceLineNo">1375</span> return cachedBlock;<a name="line.1375"></a> -<span class="sourceLineNo">1376</span> }<a name="line.1376"></a> -<span class="sourceLineNo">1377</span> }<a name="line.1377"></a> -<span class="sourceLineNo">1378</span> return null;<a name="line.1378"></a> -<span class="sourceLineNo">1379</span> }<a name="line.1379"></a> -<span class="sourceLineNo">1380</span><a name="line.1380"></a> -<span class="sourceLineNo">1381</span> /**<a name="line.1381"></a> -<span class="sourceLineNo">1382</span> * @param metaBlockName<a name="line.1382"></a> -<span class="sourceLineNo">1383</span> * @param cacheBlock Add block to cache, if found<a name="line.1383"></a> -<span class="sourceLineNo">1384</span> * @return block wrapped in a ByteBuffer, with header skipped<a name="line.1384"></a> -<span class="sourceLineNo">1385</span> * @throws IOException<a name="line.1385"></a> -<span class="sourceLineNo">1386</span> */<a name="line.1386"></a> -<span class="sourceLineNo">1387</span> @Override<a name="line.1387"></a> -<span class="sourceLineNo">1388</span> public HFileBlock getMetaBlock(String metaBlockName, boolean cacheBlock)<a name="line.1388"></a> -<span class="sourceLineNo">1389</span> throws IOException {<a name="line.1389"></a> -<span class="sourceLineNo">1390</span> if (trailer.getMetaIndexCount() == 0) {<a name="line.1390"></a> -<span class="sourceLineNo">1391</span> return null; // there are no meta blocks<a name="line.1391"></a> -<span class="sourceLineNo">1392</span> }<a name="line.1392"></a> -<span class="sourceLineNo">1393</span> if (metaBlockIndexReader == null) {<a name="line.1393"></a> -<span class="sourceLineNo">1394</span> throw new IOException("Meta index not loaded");<a name="line.1394"></a> -<span class="sourceLineNo">1395</span> }<a name="line.1395"></a> -<span class="sourceLineNo">1396</span><a name="line.1396"></a> -<span class="sourceLineNo">1397</span> byte[] mbname = Bytes.toBytes(metaBlockName);<a name="line.1397"></a> -<span class="sourceLineNo">1398</span> int block = metaBlockIndexReader.rootBlockContainingKey(mbname,<a name="line.1398"></a> -<span class="sourceLineNo">1399</span> 0, mbname.length);<a name="line.1399"></a> -<span class="sourceLineNo">1400</span> if (block == -1)<a name="line.1400"></a> -<span class="sourceLineNo">1401</span> return null;<a name="line.1401"></a> -<span class="sourceLineNo">1402</span> long blockSize = metaBlockIndexReader.getRootBlockDataSize(block);<a name="line.1402"></a> -<span class="sourceLineNo">1403</span><a name="line.1403"></a> -<span class="sourceLineNo">1404</span> // Per meta key from any given file, synchronize reads for said block. This<a name="line.1404"></a> -<span class="sourceLineNo">1405</span> // is OK to do for meta blocks because the meta block index is always<a name="line.1405"></a> -<span class="sourceLineNo">1406</span> // single-level.<a name="line.1406"></a> -<span class="sourceLineNo">1407</span> synchronized (metaBlockIndexReader<a name="line.1407"></a> -<span class="sourceLineNo">1408</span> .getRootBlockKey(block)) {<a name="line.1408"></a> -<span class="sourceLineNo">1409</span> // Check cache for block. If found return.<a name="line.1409"></a> -<span class="sourceLineNo">1410</span> long metaBlockOffset = metaBlockIndexReader.getRootBlockOffset(block);<a name="line.1410"></a> -<span class="sourceLineNo">1411</span> BlockCacheKey cacheKey = new BlockCacheKey(name, metaBlockOffset,<a name="line.1411"></a> -<span class="sourceLineNo">1412</span> this.isPrimaryReplicaReader());<a name="line.1412"></a> -<span class="sourceLineNo">1413</span><a name="line.1413"></a> -<span class="sourceLineNo">1414</span> cacheBlock &= cacheConf.shouldCacheDataOnRead();<a name="line.1414"></a> -<span class="sourceLineNo">1415</span> if (cacheConf.isBlockCacheEnabled()) {<a name="line.1415"></a> -<span class="sourceLineNo">1416</span> HFileBlock cachedBlock = getCachedBlock(cacheKey, cacheBlock, false, true, true,<a name="line.1416"></a> -<span class="sourceLineNo">1417</span> BlockType.META, null);<a name="line.1417"></a> -<span class="sourceLineNo">1418</span> if (cachedBlock != null) {<a name="line.1418"></a> -<span class="sourceLineNo">1419</span> assert cachedBlock.isUnpacked() : "Packed block leak.";<a name="line.1419"></a> -<span class="sourceLineNo">1420</span> // Return a distinct 'shallow copy' of the block,<a name="line.1420"></a> -<span class="sourceLineNo">1421</span> // so pos does not get messed by the scanner<a name="line.1421"></a> -<span class="sourceLineNo">1422</span> return cachedBlock;<a name="line.1422"></a> -<span class="sourceLineNo">1423</span> }<a name="line.1423"></a> -<span class="sourceLineNo">1424</span> // Cache Miss, please load.<a name="line.1424"></a> -<span class="sourceLineNo">1425</span> }<a name="line.1425"></a> -<span class="sourceLineNo">1426</span><a name="line.1426"></a> -<span class="sourceLineNo">1427</span> HFileBlock metaBlock = fsBlockReader.readBlockData(metaBlockOffset,<a name="line.1427"></a> -<span class="sourceLineNo">1428</span> blockSize, -1, true).unpack(hfileContext, fsBlockReader);<a name="line.1428"></a> -<span class="sourceLineNo">1429</span><a name="line.1429"></a> -<span class="sourceLineNo">1430</span> // Cache the block<a name="line.1430"></a> -<span class="sourceLineNo">1431</span> if (cacheBlock) {<a name="line.1431"></a> -<span class="sourceLineNo">1432</span> cacheConf.getBlockCache().cacheBlock(cacheKey, metaBlock,<a name="line.1432"></a> -<span class="sourceLineNo">1433</span> cacheConf.isInMemory(), this.cacheConf.isCacheDataInL1());<a name="line.1433"></a> -<span class="sourceLineNo">1434</span> }<a name="line.1434"></a> +<span class="sourceLineNo">1301</span> /**<a name="line.1301"></a> +<span class="sourceLineNo">1302</span> * The size of a (key length, value length) tuple that prefixes each entry in<a name="line.1302"></a> +<span class="sourceLineNo">1303</span> * a data block.<a name="line.1303"></a> +<span class="sourceLineNo">1304</span> */<a name="line.1304"></a> +<span class="sourceLineNo">1305</span> public final static int KEY_VALUE_LEN_SIZE = 2 * Bytes.SIZEOF_INT;<a name="line.1305"></a> +<span class="sourceLineNo">1306</span><a name="line.1306"></a> +<span class="sourceLineNo">1307</span> private boolean includesMemstoreTS = false;<a name="line.1307"></a> +<span class="sourceLineNo">1308</span> protected boolean decodeMemstoreTS = false;<a name="line.1308"></a> +<span class="sourceLineNo">1309</span><a name="line.1309"></a> +<span class="sourceLineNo">1310</span><a name="line.1310"></a> +<span class="sourceLineNo">1311</span> public boolean isDecodeMemstoreTS() {<a name="line.1311"></a> +<span class="sourceLineNo">1312</span> return this.decodeMemstoreTS;<a name="line.1312"></a> +<span class="sourceLineNo">1313</span> }<a name="line.1313"></a> +<span class="sourceLineNo">1314</span><a name="line.1314"></a> +<span class="sourceLineNo">1315</span> public boolean shouldIncludeMemstoreTS() {<a name="line.1315"></a> +<span class="sourceLineNo">1316</span> return includesMemstoreTS;<a name="line.1316"></a> +<span class="sourceLineNo">1317</span> }<a name="line.1317"></a> +<span class="sourceLineNo">1318</span><a name="line.1318"></a> +<span class="sourceLineNo">1319</span> /**<a name="line.1319"></a> +<span class="sourceLineNo">1320</span> * Retrieve block from cache. Validates the retrieved block's type vs {@code expectedBlockType}<a name="line.1320"></a> +<span class="sourceLineNo">1321</span> * and its encoding vs. {@code expectedDataBlockEncoding}. Unpacks the block as necessary.<a name="line.1321"></a> +<span class="sourceLineNo">1322</span> */<a name="line.1322"></a> +<span class="sourceLineNo">1323</span> private HFileBlock getCachedBlock(BlockCacheKey cacheKey, boolean cacheBlock, boolean useLock,<a name="line.1323"></a> +<span class="sourceLineNo">1324</span> boolean isCompaction, boolean updateCacheMetrics, BlockType expectedBlockType,<a name="line.1324"></a> +<span class="sourceLineNo">1325</span> DataBlockEncoding expectedDataBlockEncoding) throws IOException {<a name="line.1325"></a> +<span class="sourceLineNo">1326</span> // Check cache for block. If found return.<a name="line.1326"></a> +<span class="sourceLineNo">1327</span> if (cacheConf.isBlockCacheEnabled()) {<a name="line.1327"></a> +<span class="sourceLineNo">1328</span> BlockCache cache = cacheConf.getBlockCache();<a name="line.1328"></a> +<span class="sourceLineNo">1329</span> HFileBlock cachedBlock = (HFileBlock) cache.getBlock(cacheKey, cacheBlock, useLock,<a name="line.1329"></a> +<span class="sourceLineNo">1330</span> updateCacheMetrics);<a name="line.1330"></a> +<span class="sourceLineNo">1331</span> if (cachedBlock != null) {<a name="line.1331"></a> +<span class="sourceLineNo">1332</span> if (cacheConf.shouldCacheCompressed(cachedBlock.getBlockType().getCategory())) {<a name="line.1332"></a> +<span class="sourceLineNo">1333</span> HFileBlock compressedBlock = cachedBlock;<a name="line.1333"></a> +<span class="sourceLineNo">1334</span> cachedBlock = compressedBlock.unpack(hfileContext, fsBlockReader);<a name="line.1334"></a> +<span class="sourceLineNo">1335</span> // In case of compressed block after unpacking we can return the compressed block<a name="line.1335"></a> +<span class="sourceLineNo">1336</span> if (compressedBlock != cachedBlock) {<a name="line.1336"></a> +<span class="sourceLineNo">1337</span> cache.returnBlock(cacheKey, compressedBlock);<a name="line.1337"></a> +<span class="sourceLineNo">1338</span> }<a name="line.1338"></a> +<span class="sourceLineNo">1339</span> }<a name="line.1339"></a> +<span class="sourceLineNo">1340</span> validateBlockType(cachedBlock, expectedBlockType);<a name="line.1340"></a> +<span class="sourceLineNo">1341</span><a name="line.1341"></a> +<span class="sourceLineNo">1342</span> if (expectedDataBlockEncoding == null) {<a name="line.1342"></a> +<span class="sourceLineNo">1343</span> return cachedBlock;<a name="line.1343"></a> +<span class="sourceLineNo">1344</span> }<a name="line.1344"></a> +<span class="sourceLineNo">1345</span> DataBlockEncoding actualDataBlockEncoding =<a name="line.1345"></a> +<span class="sourceLineNo">1346</span> cachedBlock.getDataBlockEncoding();<a name="line.1346"></a> +<span class="sourceLineNo">1347</span> // Block types other than data blocks always have<a name="line.1347"></a> +<span class="sourceLineNo">1348</span> // DataBlockEncoding.NONE. To avoid false negative cache misses, only<a name="line.1348"></a> +<span class="sourceLineNo">1349</span> // perform this check if cached block is a data block.<a name="line.1349"></a> +<span class="sourceLineNo">1350</span> if (cachedBlock.getBlockType().isData() &&<a name="line.1350"></a> +<span class="sourceLineNo">1351</span> !actualDataBlockEncoding.equals(expectedDataBlockEncoding)) {<a name="line.1351"></a> +<span class="sourceLineNo">1352</span> // This mismatch may happen if a Scanner, which is used for say a<a name="line.1352"></a> +<span class="sourceLineNo">1353</span> // compaction, tries to read an encoded block from the block cache.<a name="line.1353"></a> +<span class="sourceLineNo">1354</span> // The reverse might happen when an EncodedScanner tries to read<a name="line.1354"></a> +<span class="sourceLineNo">1355</span> // un-encoded blocks which were cached earlier.<a name="line.1355"></a> +<span class="sourceLineNo">1356</span> //<a name="line.1356"></a> +<span class="sourceLineNo">1357</span> // Because returning a data block with an implicit BlockType mismatch<a name="line.1357"></a> +<span class="sourceLineNo">1358</span> // will cause the requesting scanner to throw a disk read should be<a name="line.1358"></a> +<span class="sourceLineNo">1359</span> // forced here. This will potentially cause a significant number of<a name="line.1359"></a> +<span class="sourceLineNo">1360</span> // cache misses, so update so we should keep track of this as it might<a name="line.1360"></a> +<span class="sourceLineNo">1361</span> // justify the work on a CompoundScanner.<a name="line.1361"></a> +<span class="sourceLineNo">1362</span> if (!expectedDataBlockEncoding.equals(DataBlockEncoding.NONE) &&<a name="line.1362"></a> +<span class="sourceLineNo">1363</span> !actualDataBlockEncoding.equals(DataBlockEncoding.NONE)) {<a name="line.1363"></a> +<span class="sourceLineNo">1364</span> // If the block is encoded but the encoding does not match the<a name="line.1364"></a> +<span class="sourceLineNo">1365</span> // expected encoding it is likely the encoding was changed but the<a name="line.1365"></a> +<span class="sourceLineNo">1366</span> // block was not yet evicted. Evictions on file close happen async<a name="line.1366"></a> +<span class="sourceLineNo">1367</span> // so blocks with the old encoding still linger in cache for some<a name="line.1367"></a> +<span class="sourceLineNo">1368</span> // period of time. This event should be rare as it only happens on<a name="line.1368"></a> +<span class="sourceLineNo">1369</span> // schema definition change.<a name="line.1369"></a> +<span class="sourceLineNo">1370</span> LOG.info("Evicting cached block with key " + cacheKey +<a name="line.1370"></a> +<span class="sourceLineNo">1371</span> " because of a data block encoding mismatch" +<a name="line.1371"></a> +<span class="sourceLineNo">1372</span> "; expected: " + expectedDataBlockEncoding +<a name="line.1372"></a> +<span class="sourceLineNo">1373</span> ", actual: " + actualDataBlockEncoding);<a name="line.1373"></a> +<span class="sourceLineNo">1374</span> // This is an error scenario. so here we need to decrement the<a name="line.1374"></a> +<span class="sourceLineNo">1375</span> // count.<a name="line.1375"></a> +<span class="sourceLineNo">1376</span> cache.returnBlock(cacheKey, cachedBlock);<a name="line.1376"></a> +<span class="sourceLineNo">1377</span> cache.evictBlock(cacheKey);<a name="line.1377"></a> +<span class="sourceLineNo">1378</span> }<a name="line.1378"></a> +<span class="sourceLineNo">1379</span> return null;<a name="line.1379"></a> +<span class="sourceLineNo">1380</span> }<a name="line.1380"></a> +<span class="sourceLineNo">1381</span> return cachedBlock;<a name="line.1381"></a> +<span class="sourceLineNo">1382</span> }<a name="line.1382"></a> +<span class="sourceLineNo">1383</span> }<a name="line.1383"></a> +<span class="sourceLineNo">1384</span> return null;<a name="line.1384"></a> +<span class="sourceLineNo">1385</span> }<a name="line.1385"></a> +<span class="sourceLineNo">1386</span><a name="line.1386"></a> +<span class="sourceLineNo">1387</span> /**<a name="line.1387"></a> +<span class="sourceLineNo">1388</span> * @param metaBlockName<a name="line.1388"></a> +<span class="sourceLineNo">1389</span> * @param cacheBlock Add block to cache, if found<a name="line.1389"></a> +<span class="sourceLineNo">1390</span> * @return block wrapped in a ByteBuffer, with header skipped<a name="line.1390"></a> +<span class="sourceLineNo">1391</span> * @throws IOException<a name="line.1391"></a> +<span class="sourceLineNo">1392</span> */<a name="line.1392"></a> +<span class="sourceLineNo">1393</span> @Override<a name="line.1393"></a> +<span class="sourceLineNo">1394</span> public HFileBlock getMetaBlock(String metaBlockName, boolean cacheBlock)<a name="line.1394"></a> +<span class="sourceLineNo">1395</span> throws IOException {<a name="line.1395"></a> +<span class="sourceLineNo">1396</span> if (trailer.getMetaIndexCount() == 0) {<a name="line.1396"></a> +<span class="sourceLineNo">1397</span> return null; // there are no meta blocks<a name="line.1397"></a> +<span class="sourceLineNo">1398</span> }<a name="line.1398"></a> +<span class="sourceLineNo">1399</span> if (metaBlockIndexReader == null) {<a name="line.1399"></a> +<span class="sourceLineNo">1400</span> throw new IOException("Meta index not loaded");<a name="line.1400"></a> +<span class="sourceLineNo">1401</span> }<a name="line.1401"></a> +<span class="sourceLineNo">1402</span><a name="line.1402"></a> +<span class="sourceLineNo">1403</span> byte[] mbname = Bytes.toBytes(metaBlockName);<a name="line.1403"></a> +<span class="sourceLineNo">1404</span> int block = metaBlockIndexReader.rootBlockContainingKey(mbname,<a name="line.1404"></a> +<span class="sourceLineNo">1405</span> 0, mbname.length);<a name="line.1405"></a> +<span class="sourceLineNo">1406</span> if (block == -1)<a name="line.1406"></a> +<span class="sourceLineNo">1407</span> return null;<a name="line.1407"></a> +<span class="sourceLineNo">1408</span> long blockSize = metaBlockIndexReader.getRootBlockDataSize(block);<a name="line.1408"></a> +<span class="sourceLineNo">1409</span><a name="line.1409"></a> +<span class="sourceLineNo">1410</span> // Per meta key from any given file, synchronize reads for said block. This<a name="line.1410"></a> +<span class="sourceLineNo">1411</span> // is OK to do for meta blocks because the meta block index is always<a name="line.1411"></a> +<span class="sourceLineNo">1412</span> // single-level.<a name="line.1412"></a> +<span class="sourceLineNo">1413</span> synchronized (metaBlockIndexReader<a name="line.1413"></a> +<span class="sourceLineNo">1414</span> .getRootBlockKey(block)) {<a name="line.1414"></a> +<span class="sourceLineNo">1415</span> // Check cache for block. If found return.<a name="line.1415"></a> +<span class="sourceLineNo">1416</span> long metaBlockOffset = metaBlockIndexReader.getRootBlockOffset(block);<a name="line.1416"></a> +<span class="sourceLineNo">1417</span> BlockCacheKey cacheKey = new BlockCacheKey(name, metaBlockOffset,<a name="line.1417"></a> +<span class="sourceLineNo">1418</span> this.isPrimaryReplicaReader());<a name="line.1418"></a> +<span class="sourceLineNo">1419</span><a name="line.1419"></a> +<span class="sourceLineNo">1420</span> cacheBlock &= cacheConf.shouldCacheDataOnRead();<a name="line.1420"></a> +<span class="sourceLineNo">1421</span> if (cacheConf.isBlockCacheEnabled()) {<a name="line.1421"></a> +<span class="sourceLineNo">1422</span> HFileBlock cachedBlock = getCachedBlock(cacheKey, cacheBlock, false, true, true,<a name="line.1422"></a> +<span class="sourceLineNo">1423</span> BlockType.META, null);<a name="line.1423"></a> +<span class="sourceLineNo">1424</span> if (cachedBlock != null) {<a name="line.1424"></a> +<span class="sourceLineNo">1425</span> assert cachedBlock.isUnpacked() : "Packed block leak.";<a name="line.1425"></a> +<span class="sourceLineNo">1426</span> // Return a distinct 'shallow copy' of the block,<a name="line.1426"></a> +<span class="sourceLineNo">1427</span> // so pos does not get messed by the scanner<a name="line.1427"></a> +<span class="sourceLineNo">1428</span> return cachedBlock;<a name="line.1428"></a> +<span class="sourceLineNo">1429</span> }<a name="line.1429"></a> +<span class="sourceLineNo">1430</span> // Cache Miss, please load.<a name="line.1430"></a> +<span class="sourceLineNo">1431</span> }<a name="line.1431"></a> +<span class="sourceLineNo">1432</span><a name="line.1432"></a> +<span class="sourceLineNo">1433</span> HFileBlock metaBlock = fsBlockReader.readBlockData(metaBlockOffset,<a name="line.1433"></a> +<span class="sourceLineNo">1434</span> blockSize, -1, true).unpack(hfileContext, fsBlockReader);<a name="line.1434"></a> <span class="sourceLineNo">1435</span><a name="line.1435">
<TRUNCATED>
