http://git-wip-us.apache.org/repos/asf/hbase-site/blob/21347dff/devapidocs/src-html/org/apache/hadoop/hbase/io/hfile/HFileBlock.html ---------------------------------------------------------------------- diff --git a/devapidocs/src-html/org/apache/hadoop/hbase/io/hfile/HFileBlock.html b/devapidocs/src-html/org/apache/hadoop/hbase/io/hfile/HFileBlock.html index 12d10e1..97ceefd 100644 --- a/devapidocs/src-html/org/apache/hadoop/hbase/io/hfile/HFileBlock.html +++ b/devapidocs/src-html/org/apache/hadoop/hbase/io/hfile/HFileBlock.html @@ -1740,384 +1740,380 @@ <span class="sourceLineNo">1732</span> // and will save us having to seek the stream backwards to reread the header we<a name="line.1732"></a> <span class="sourceLineNo">1733</span> // read the last time through here.<a name="line.1733"></a> <span class="sourceLineNo">1734</span> ByteBuffer headerBuf = getCachedHeader(offset);<a name="line.1734"></a> -<span class="sourceLineNo">1735</span> if (LOG.isTraceEnabled()) {<a name="line.1735"></a> -<span class="sourceLineNo">1736</span> LOG.trace("Reading " + this.fileContext.getHFileName() + " at offset=" + offset +<a name="line.1736"></a> -<span class="sourceLineNo">1737</span> ", pread=" + pread + ", verifyChecksum=" + verifyChecksum + ", cachedHeader=" +<a name="line.1737"></a> -<span class="sourceLineNo">1738</span> headerBuf + ", onDiskSizeWithHeader=" + onDiskSizeWithHeader);<a name="line.1738"></a> -<span class="sourceLineNo">1739</span> }<a name="line.1739"></a> -<span class="sourceLineNo">1740</span> // This is NOT same as verifyChecksum. 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(byte) 1 : (byte) 0);<a name="line.1927"></a> -<span class="sourceLineNo">1928</span> destination.putLong(this.offset);<a name="line.1928"></a> -<span class="sourceLineNo">1929</span> destination.putInt(this.nextBlockOnDiskSize);<a name="line.1929"></a> -<span class="sourceLineNo">1930</span> return destination;<a name="line.1930"></a> -<span class="sourceLineNo">1931</span> }<a name="line.1931"></a> -<span class="sourceLineNo">1932</span><a name="line.1932"></a> -<span class="sourceLineNo">1933</span> // Cacheable implementation<a name="line.1933"></a> -<span class="sourceLineNo">1934</span> @Override<a name="line.1934"></a> -<span class="sourceLineNo">1935</span> public CacheableDeserializer<Cacheable> getDeserializer() {<a name="line.1935"></a> -<span class="sourceLineNo">1936</span> return HFileBlock.BLOCK_DESERIALIZER;<a name="line.1936"></a> -<span class="sourceLineNo">1937</span> }<a name="line.1937"></a> -<span class="sourceLineNo">1938</span><a name="line.1938"></a> -<span class="sourceLineNo">1939</span> @Override<a name="line.1939"></a> -<span class="sourceLineNo">1940</span> public int hashCode() {<a name="line.1940"></a> -<span class="sourceLineNo">1941</span> int result = 1;<a name="line.1941"></a> -<span class="sourceLineNo">1942</span> result = result * 31 + blockType.hashCode();<a name="line.1942"></a> -<span class="sourceLineNo">1943</span> result = result * 31 + nextBlockOnDiskSize;<a name="line.1943"></a> -<span class="sourceLineNo">1944</span> result = result * 31 + (int) (offset ^ (offset >>> 32));<a name="line.1944"></a> -<span class="sourceLineNo">1945</span> result = result * 31 + onDiskSizeWithoutHeader;<a name="line.1945"></a> -<span class="sourceLineNo">1946</span> result = result * 31 + (int) (prevBlockOffset ^ (prevBlockOffset >>> 32));<a name="line.1946"></a> -<span class="sourceLineNo">1947</span> result = result * 31 + uncompressedSizeWithoutHeader;<a name="line.1947"></a> -<span class="sourceLineNo">1948</span> result = result * 31 + buf.hashCode();<a name="line.1948"></a> -<span class="sourceLineNo">1949</span> return result;<a name="line.1949"></a> -<span class="sourceLineNo">1950</span> }<a name="line.1950"></a> -<span class="sourceLineNo">1951</span><a name="line.1951"></a> -<span class="sourceLineNo">1952</span> @Override<a name="line.1952"></a> -<span class="sourceLineNo">1953</span> public boolean equals(Object comparison) {<a name="line.1953"></a> -<span class="sourceLineNo">1954</span> if (this == comparison) {<a name="line.1954"></a> -<span class="sourceLineNo">1955</span> return true;<a name="line.1955"></a> -<span class="sourceLineNo">1956</span> }<a name="line.1956"></a> -<span class="sourceLineNo">1957</span> if (comparison == null) {<a name="line.1957"></a> -<span class="sourceLineNo">1958</span> return false;<a name="line.1958"></a> -<span class="sourceLineNo">1959</span> }<a name="line.1959"></a> -<span class="sourceLineNo">1960</span> if (comparison.getClass() != this.getClass()) {<a name="line.1960"></a> -<span class="sourceLineNo">1961</span> return false;<a name="line.1961"></a> -<span class="sourceLineNo">1962</span> }<a name="line.1962"></a> -<span class="sourceLineNo">1963</span><a name="line.1963"></a> -<span class="sourceLineNo">1964</span> HFileBlock castedComparison = (HFileBlock) comparison;<a name="line.1964"></a> -<span class="sourceLineNo">1965</span><a name="line.1965"></a> -<span class="sourceLineNo">1966</span> if (castedComparison.blockType != this.blockType) {<a name="line.1966"></a> -<span class="sourceLineNo">1967</span> return false;<a name="line.1967"></a> -<span class="sourceLineNo">1968</span> }<a name="line.1968"></a> -<span class="sourceLineNo">1969</span> if (castedComparison.nextBlockOnDiskSize != this.nextBlockOnDiskSize) {<a name="line.1969"></a> +<span class="sourceLineNo">1735</span> LOG.trace("Reading {} at offset={}, pread={}, verifyChecksum={}, cachedHeader={}, " +<a name="line.1735"></a> +<span class="sourceLineNo">1736</span> "onDiskSizeWithHeader={}", this.fileContext.getHFileName(), offset, pread,<a name="line.1736"></a> +<span class="sourceLineNo">1737</span> verifyChecksum, headerBuf, onDiskSizeWithHeader);<a name="line.1737"></a> +<span class="sourceLineNo">1738</span> // This is NOT same as verifyChecksum. This latter is whether to do hbase<a name="line.1738"></a> +<span class="sourceLineNo">1739</span> // checksums. Can change with circumstances. The below flag is whether the<a name="line.1739"></a> +<span class="sourceLineNo">1740</span> // file has support for checksums (version 2+).<a name="line.1740"></a> +<span class="sourceLineNo">1741</span> boolean checksumSupport = this.fileContext.isUseHBaseChecksum();<a name="line.1741"></a> +<span class="sourceLineNo">1742</span> long startTime = System.currentTimeMillis();<a name="line.1742"></a> +<span class="sourceLineNo">1743</span> if (onDiskSizeWithHeader <= 0) {<a name="line.1743"></a> +<span class="sourceLineNo">1744</span> // We were not passed the block size. Need to get it from the header. If header was<a name="line.1744"></a> +<span class="sourceLineNo">1745</span> // not cached (see getCachedHeader above), need to seek to pull it in. 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Will make it easier to go to HDFS with BBPool (offheap).<a name="line.1767"></a> +<span class="sourceLineNo">1768</span> byte [] onDiskBlock = new byte[onDiskSizeWithHeader + hdrSize];<a name="line.1768"></a> +<span class="sourceLineNo">1769</span> int nextBlockOnDiskSize = readAtOffset(is, onDiskBlock, preReadHeaderSize,<a name="line.1769"></a> +<span class="sourceLineNo">1770</span> onDiskSizeWithHeader - preReadHeaderSize, true, offset + preReadHeaderSize, pread);<a name="line.1770"></a> +<span class="sourceLineNo">1771</span> if (headerBuf != null) {<a name="line.1771"></a> +<span class="sourceLineNo">1772</span> // The header has been read when reading the previous block OR in a distinct header-only<a name="line.1772"></a> +<span class="sourceLineNo">1773</span> // read. Copy to this block's header.<a name="line.1773"></a> +<span class="sourceLineNo">1774</span> System.arraycopy(headerBuf.array(), headerBuf.arrayOffset(), onDiskBlock, 0, hdrSize);<a name="line.1774"></a> +<span class="sourceLineNo">1775</span> } else {<a name="line.1775"></a> +<span class="sourceLineNo">1776</span> headerBuf = ByteBuffer.wrap(onDiskBlock, 0, hdrSize);<a name="line.1776"></a> +<span class="sourceLineNo">1777</span> }<a name="line.1777"></a> +<span class="sourceLineNo">1778</span> // Do a few checks before we go instantiate HFileBlock.<a name="line.1778"></a> +<span class="sourceLineNo">1779</span> assert onDiskSizeWithHeader > this.hdrSize;<a name="line.1779"></a> +<span class="sourceLineNo">1780</span> verifyOnDiskSizeMatchesHeader(onDiskSizeWithHeader, headerBuf, offset, checksumSupport);<a name="line.1780"></a> +<span class="sourceLineNo">1781</span> ByteBuffer onDiskBlockByteBuffer = ByteBuffer.wrap(onDiskBlock, 0, onDiskSizeWithHeader);<a name="line.1781"></a> +<span class="sourceLineNo">1782</span> // Verify checksum of the data before using it for building HFileBlock.<a name="line.1782"></a> +<span class="sourceLineNo">1783</span> if (verifyChecksum &&<a name="line.1783"></a> +<span class="sourceLineNo">1784</span> !validateChecksum(offset, onDiskBlockByteBuffer, hdrSize)) {<a name="line.1784"></a> +<span class="sourceLineNo">1785</span> return null;<a name="line.1785"></a> +<span class="sourceLineNo">1786</span> }<a name="line.1786"></a> +<span class="sourceLineNo">1787</span> long duration = System.currentTimeMillis() - startTime;<a name="line.1787"></a> +<span class="sourceLineNo">1788</span> if (updateMetrics) {<a name="line.1788"></a> +<span class="sourceLineNo">1789</span> HFile.updateReadLatency(duration, pread);<a name="line.1789"></a> +<span class="sourceLineNo">1790</span> }<a name="line.1790"></a> +<span class="sourceLineNo">1791</span> // The onDiskBlock will become the headerAndDataBuffer for this block.<a 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This exposes internals.<a name="line.1909"></a> +<span class="sourceLineNo">1910</span> */<a name="line.1910"></a> +<span class="sourceLineNo">1911</span> public ByteBuffer getMetaData() {<a name="line.1911"></a> +<span class="sourceLineNo">1912</span> ByteBuffer bb = ByteBuffer.allocate(BLOCK_METADATA_SPACE);<a name="line.1912"></a> +<span class="sourceLineNo">1913</span> bb = addMetaData(bb);<a name="line.1913"></a> +<span class="sourceLineNo">1914</span> bb.flip();<a name="line.1914"></a> +<span class="sourceLineNo">1915</span> return bb;<a name="line.1915"></a> +<span class="sourceLineNo">1916</span> }<a name="line.1916"></a> +<span class="sourceLineNo">1917</span><a name="line.1917"></a> +<span class="sourceLineNo">1918</span> /**<a name="line.1918"></a> +<span class="sourceLineNo">1919</span> * Adds metadata at current position (position is moved forward). 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class="sourceLineNo">1998</span> }<a name="line.1998"></a> +<span class="sourceLineNo">1999</span><a name="line.1999"></a> +<span class="sourceLineNo">2000</span> int getBytesPerChecksum() {<a name="line.2000"></a> +<span class="sourceLineNo">2001</span> return this.fileContext.getBytesPerChecksum();<a name="line.2001"></a> <span class="sourceLineNo">2002</span> }<a name="line.2002"></a> <span class="sourceLineNo">2003</span><a name="line.2003"></a> -<span class="sourceLineNo">2004</span> int getBytesPerChecksum() {<a name="line.2004"></a> -<span class="sourceLineNo">2005</span> return this.fileContext.getBytesPerChecksum();<a name="line.2005"></a> -<span class="sourceLineNo">2006</span> }<a name="line.2006"></a> -<span class="sourceLineNo">2007</span><a name="line.2007"></a> -<span class="sourceLineNo">2008</span> /** @return the size of data on disk + header. 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Excludes checksum. */<a name="line.2004"></a> +<span class="sourceLineNo">2005</span> @VisibleForTesting<a name="line.2005"></a> +<span class="sourceLineNo">2006</span> int getOnDiskDataSizeWithHeader() {<a name="line.2006"></a> +<span class="sourceLineNo">2007</span> return this.onDiskDataSizeWithHeader;<a name="line.2007"></a> +<span class="sourceLineNo">2008</span> }<a name="line.2008"></a> +<span class="sourceLineNo">2009</span><a name="line.2009"></a> +<span class="sourceLineNo">2010</span> /**<a name="line.2010"></a> +<span class="sourceLineNo">2011</span> * Calculate the number of bytes required to store all the checksums<a name="line.2011"></a> +<span class="sourceLineNo">2012</span> * for this block. Each checksum value is a 4 byte integer.<a name="line.2012"></a> +<span class="sourceLineNo">2013</span> */<a name="line.2013"></a> +<span class="sourceLineNo">2014</span> int totalChecksumBytes() {<a name="line.2014"></a> +<span class="sourceLineNo">2015</span> // If the hfile block has minorVersion 0, then there are no checksum<a name="line.2015"></a> +<span class="sourceLineNo">2016</span> // data to validate. Similarly, a zero value in this.bytesPerChecksum<a name="line.2016"></a> +<span class="sourceLineNo">2017</span> // indicates that cached blocks do not have checksum data because<a name="line.2017"></a> +<span class="sourceLineNo">2018</span> // checksums were already validated when the block was read from disk.<a name="line.2018"></a> +<span class="sourceLineNo">2019</span> if (!fileContext.isUseHBaseChecksum() || this.fileContext.getBytesPerChecksum() == 0) {<a name="line.2019"></a> +<span class="sourceLineNo">2020</span> return 0;<a name="line.2020"></a> +<span class="sourceLineNo">2021</span> }<a name="line.2021"></a> +<span class="sourceLineNo">2022</span> return (int) ChecksumUtil.numBytes(onDiskDataSizeWithHeader,<a name="line.2022"></a> +<span class="sourceLineNo">2023</span> this.fileContext.getBytesPerChecksum());<a name="line.2023"></a> +<span class="sourceLineNo">2024</span> }<a name="line.2024"></a> +<span class="sourceLineNo">2025</span><a name="line.2025"></a> +<span class="sourceLineNo">2026</span> /**<a name="line.2026"></a> +<span class="sourceLineNo">2027</span> * Returns the size of this block header.<a name="line.2027"></a> +<span class="sourceLineNo">2028</span> */<a name="line.2028"></a> +<span class="sourceLineNo">2029</span> public int headerSize() {<a name="line.2029"></a> +<span class="sourceLineNo">2030</span> return headerSize(this.fileContext.isUseHBaseChecksum());<a name="line.2030"></a> +<span class="sourceLineNo">2031</span> }<a name="line.2031"></a> +<span class="sourceLineNo">2032</span><a name="line.2032"></a> +<span class="sourceLineNo">2033</span> /**<a name="line.2033"></a> +<span class="sourceLineNo">2034</span> * Maps a minor version to the size of the header.<a name="line.2034"></a> +<span class="sourceLineNo">2035</span> */<a name="line.2035"></a> +<span class="sourceLineNo">2036</span> public static int headerSize(boolean usesHBaseChecksum) {<a name="line.2036"></a> +<span class="sourceLineNo">2037</span> return usesHBaseChecksum?<a name="line.2037"></a> +<span class="sourceLineNo">2038</span> HConstants.HFILEBLOCK_HEADER_SIZE: HConstants.HFILEBLOCK_HEADER_SIZE_NO_CHECKSUM;<a name="line.2038"></a> +<span class="sourceLineNo">2039</span> }<a name="line.2039"></a> +<span class="sourceLineNo">2040</span><a name="line.2040"></a> +<span class="sourceLineNo">2041</span> /**<a name="line.2041"></a> +<span class="sourceLineNo">2042</span> * Return the appropriate DUMMY_HEADER for the minor version<a name="line.2042"></a> +<span class="sourceLineNo">2043</span> */<a name="line.2043"></a> +<span class="sourceLineNo">2044</span> @VisibleForTesting<a name="line.2044"></a> +<span class="sourceLineNo">2045</span> // TODO: Why is this in here?<a name="line.2045"></a> +<span class="sourceLineNo">2046</span> byte[] getDummyHeaderForVersion() {<a name="line.2046"></a> +<span class="sourceLineNo">2047</span> return getDummyHeaderForVersion(this.fileContext.isUseHBaseChecksum());<a name="line.2047"></a> +<span class="sourceLineNo">2048</span> }<a name="line.2048"></a> +<span class="sourceLineNo">2049</span><a name="line.2049"></a> +<span class="sourceLineNo">2050</span> /**<a name="line.2050"></a> +<span class="sourceLineNo">2051</span> * Return the appropriate DUMMY_HEADER for the minor version<a name="line.2051"></a> +<span class="sourceLineNo">2052</span> */<a name="line.2052"></a> +<span class="sourceLineNo">2053</span> static private byte[] getDummyHeaderForVersion(boolean usesHBaseChecksum) {<a name="line.2053"></a> +<span class="sourceLineNo">2054</span> return usesHBaseChecksum? HConstants.HFILEBLOCK_DUMMY_HEADER: DUMMY_HEADER_NO_CHECKSUM;<a name="line.2054"></a> +<span class="sourceLineNo">2055</span> }<a name="line.2055"></a> +<span class="sourceLineNo">2056</span><a name="line.2056"></a> +<span class="sourceLineNo">2057</span> /**<a name="line.2057"></a> +<span class="sourceLineNo">2058</span> * @return This HFileBlocks fileContext which will a derivative of the<a name="line.2058"></a> +<span class="sourceLineNo">2059</span> * fileContext for the file from which this block's data was originally read.<a name="line.2059"></a> +<span class="sourceLineNo">2060</span> */<a name="line.2060"></a> +<span class="sourceLineNo">2061</span> HFileContext getHFileContext() {<a name="line.2061"></a> +<span class="sourceLineNo">2062</span> return this.fileContext;<a name="line.2062"></a> +<span class="sourceLineNo">2063</span> }<a name="line.2063"></a> +<span class="sourceLineNo">2064</span><a name="line.2064"></a> +<span class="sourceLineNo">2065</span> @Override<a name="line.2065"></a> +<span class="sourceLineNo">2066</span> public MemoryType getMemoryType() {<a name="line.2066"></a> +<span class="sourceLineNo">2067</span> return this.memType;<a name="line.2067"></a> +<span class="sourceLineNo">2068</span> }<a name="line.2068"></a> +<span class="sourceLineNo">2069</span><a name="line.2069"></a> +<span class="sourceLineNo">2070</span> /**<a name="line.2070"></a> +<span class="sourceLineNo">2071</span> * @return true if this block is backed by a shared memory area(such as that of a BucketCache).<a name="line.2071"></a> +<span class="sourceLineNo">2072</span> */<a name="line.2072"></a> +<span class="sourceLineNo">2073</span> boolean usesSharedMemory() {<a name="line.2073"></a> +<span class="sourceLineNo">2074</span> return this.memType == MemoryType.SHARED;<a name="line.2074"></a> +<span class="sourceLineNo">2075</span> }<a name="line.2075"></a> +<span class="sourceLineNo">2076</span><a name="line.2076"></a> +<span class="sourceLineNo">2077</span> /**<a name="line.2077"></a> +<span class="sourceLineNo">2078</span> * Convert the contents of the block header into a human readable string.<a name="line.2078"></a> +<span class="sourceLineNo">2079</span> * This is mostly helpful for debugging. This assumes that the block<a name="line.2079"></a> +<span class="sourceLineNo">2080</span> * has minor version > 0.<a name="line.2080"></a> +<span class="sourceLineNo">2081</span> */<a name="line.2081"></a> +<span class="sourceLineNo">2082</span> @VisibleForTesting<a name="line.2082"></a> +<span class="sourceLineNo">2083</span> static String toStringHeader(ByteBuff buf) throws IOException {<a name="line.2083"></a> +<span class="sourceLineNo">2084</span> byte[] magicBuf = new byte[Math.min(buf.limit() - buf.position(), BlockType.MAGIC_LENGTH)];<a name="line.2084"></a> +<span class="sourceLineNo">2085</span> buf.get(magicBuf);<a name="line.2085"></a> +<span class="sourceLineNo">2086</span> BlockType bt = BlockType.parse(magicBuf, 0, BlockType.MAGIC_LENGTH);<a name="line.2086"></a> +<span class="sourceLineNo">2087</span> int compressedBlockSizeNoHeader = buf.getInt();<a name="line.2087"></a> +<span class="sourceLineNo">2088</span> int uncompressedBlockSizeNoHeader = buf.getInt();<a name="line.2088"></a> +<span class="sourceLineNo">2089</span> long prevBlockOffset = buf.getLong();<a name="line.2089"></a> +<span class="sourceLineNo">2090</span> byte cksumtype = buf.get();<a name="line.2090"></a> +<span class="sourceLineNo">2091</span> long bytesPerChecksum = buf.getInt();<a name="line.2091"></a> +<span class="sourceLineNo">2092</span> long onDiskDataSizeWithHeader = buf.getInt();<a name="line.2092"></a> +<span class="sourceLineNo">2093</span> return " Header dump: magic: " + Bytes.toString(magicBuf) +<a name="line.2093"></a> +<span class="sourceLineNo">2094</span> " blockType " + bt +<a name="line.2094"></a> +<span class="sourceLineNo">2095</span> " compressedBlockSizeNoHeader " +<a name="line.2095"></a> +<span class="sourceLineNo">2096</span> compressedBlockSizeNoHeader +<a name="line.2096"></a> +<span class="sourceLineNo">2097</span> " uncompressedBlockSizeNoHeader " +<a name="line.2097"></a> +<span class="sourceLineNo">2098</span> uncompressedBlockSizeNoHeader +<a name="line.2098"></a> +<span class="sourceLineNo">2099</span> " prevBlockOffset " + prevBlockOffset +<a name="line.2099"></a> +<span class="sourceLineNo">2100</span> " checksumType " + ChecksumType.codeToType(cksumtype) +<a name="line.2100"></a> +<span class="sourceLineNo">2101</span> " bytesPerChecksum " + bytesPerChecksum +<a name="line.2101"></a> +<span class="sourceLineNo">2102</span> " onDiskDataSizeWithHeader " + onDiskDataSizeWithHeader;<a name="line.2102"></a> +<span class="sourceLineNo">2103</span> }<a name="line.2103"></a> +<span class="sourceLineNo">2104</span><a name="line.2104"></a> +<span class="sourceLineNo">2105</span> public HFileBlock deepClone() {<a name="line.2105"></a> +<span class="sourceLineNo">2106</span> return new HFileBlock(this, true);<a name="line.2106"></a> <span class="sourceLineNo">2107</span> }<a name="line.2107"></a> -<span class="sourceLineNo">2108</span><a name="line.2108"></a> -<span class="sourceLineNo">2109</span> public HFileBlock deepClone() {<a name="line.2109"></a> -<span class="sourceLineNo">2110</span> return new HFileBlock(this, true);<a name="line.2110"></a> -<span class="sourceLineNo">2111</span> }<a name="line.2111"></a> -<span class="sourceLineNo">2112</span>}<a name="line.2112"></a> +<span class="sourceLineNo">2108</span>}<a name="line.2108"></a>
http://git-wip-us.apache.org/repos/asf/hbase-site/blob/21347dff/devapidocs/src-html/org/apache/hadoop/hbase/regionserver/AdaptiveMemStoreCompactionStrategy.html ---------------------------------------------------------------------- diff --git a/devapidocs/src-html/org/apache/hadoop/hbase/regionserver/AdaptiveMemStoreCompactionStrategy.html b/devapidocs/src-html/org/apache/hadoop/hbase/regionserver/AdaptiveMemStoreCompactionStrategy.html index 995bd6c..18be7ca 100644 --- a/devapidocs/src-html/org/apache/hadoop/hbase/regionserver/AdaptiveMemStoreCompactionStrategy.html +++ b/devapidocs/src-html/org/apache/hadoop/hbase/regionserver/AdaptiveMemStoreCompactionStrategy.html @@ -49,44 +49,44 @@ <span class="sourceLineNo">041</span> */<a name="line.41"></a> <span class="sourceLineNo">042</span>@InterfaceAudience.Private<a name="line.42"></a> <span class="sourceLineNo">043</span>public class AdaptiveMemStoreCompactionStrategy extends MemStoreCompactionStrategy{<a name="line.43"></a> -<span class="sourceLineNo">044</span><a name="line.44"></a> -<span class="sourceLineNo">045</span> private static final String name = "ADAPTIVE";<a name="line.45"></a> -<span class="sourceLineNo">046</span> public static final String ADAPTIVE_COMPACTION_THRESHOLD_KEY =<a name="line.46"></a> -<span class="sourceLineNo">047</span> "hbase.hregion.compacting.memstore.adaptive.compaction.threshold";<a name="line.47"></a> -<span class="sourceLineNo">048</span> private static final double ADAPTIVE_COMPACTION_THRESHOLD_DEFAULT = 0.5;<a name="line.48"></a> -<span class="sourceLineNo">049</span> public static final String ADAPTIVE_INITIAL_COMPACTION_PROBABILITY_KEY =<a name="line.49"></a> -<span class="sourceLineNo">050</span> "hbase.hregion.compacting.memstore.adaptive.compaction.probability";<a name="line.50"></a> -<span class="sourceLineNo">051</span> private static final double ADAPTIVE_INITIAL_COMPACTION_PROBABILITY_DEFAULT = 0.5;<a name="line.51"></a> -<span class="sourceLineNo">052</span> private static final double ADAPTIVE_PROBABILITY_FACTOR = 1.02;<a name="line.52"></a> -<span class="sourceLineNo">053</span><a name="line.53"></a> -<span class="sourceLineNo">054</span> private double compactionThreshold;<a name="line.54"></a> -<span class="sourceLineNo">055</span> private double initialCompactionProbability;<a name="line.55"></a> -<span class="sourceLineNo">056</span> private double compactionProbability;<a name="line.56"></a> -<span class="sourceLineNo">057</span> private Random rand = new Random();<a name="line.57"></a> -<span class="sourceLineNo">058</span> private double numCellsInVersionedList = 0;<a name="line.58"></a> -<span class="sourceLineNo">059</span> private boolean compacted = false;<a name="line.59"></a> -<span class="sourceLineNo">060</span><a name="line.60"></a> -<span class="sourceLineNo">061</span> public AdaptiveMemStoreCompactionStrategy(Configuration conf, String cfName) {<a name="line.61"></a> -<span class="sourceLineNo">062</span> super(conf, cfName);<a name="line.62"></a> -<span class="sourceLineNo">063</span> compactionThreshold = conf.getDouble(ADAPTIVE_COMPACTION_THRESHOLD_KEY,<a name="line.63"></a> -<span class="sourceLineNo">064</span> ADAPTIVE_COMPACTION_THRESHOLD_DEFAULT);<a name="line.64"></a> -<span class="sourceLineNo">065</span> initialCompactionProbability = conf.getDouble(ADAPTIVE_INITIAL_COMPACTION_PROBABILITY_KEY,<a name="line.65"></a> -<span class="sourceLineNo">066</span> ADAPTIVE_INITIAL_COMPACTION_PROBABILITY_DEFAULT);<a name="line.66"></a> -<span class="sourceLineNo">067</span> resetStats();<a name="line.67"></a> -<span class="sourceLineNo">068</span> }<a name="line.68"></a> -<span class="sourceLineNo">069</span><a name="line.69"></a> -<span class="sourceLineNo">070</span> @Override public Action getAction(VersionedSegmentsList versionedList) {<a name="line.70"></a> -<span class="sourceLineNo">071</span> if (versionedList.getEstimatedUniquesFrac() < 1.0 - compactionThreshold) {<a name="line.71"></a> -<span class="sourceLineNo">072</span> double r = rand.nextDouble();<a name="line.72"></a> -<span class="sourceLineNo">073</span> if(r < compactionProbability) {<a name="line.73"></a> -<span class="sourceLineNo">074</span> numCellsInVersionedList = versionedList.getNumOfCells();<a name="line.74"></a> -<span class="sourceLineNo">075</span> compacted = true;<a name="line.75"></a> -<span class="sourceLineNo">076</span> return compact(versionedList, name+" (compaction probability="+compactionProbability+")");<a name="line.76"></a> +<span class="sourceLineNo">044</span> private static final String NAME = "ADAPTIVE";<a name="line.44"></a> +<span class="sourceLineNo">045</span> public static final String ADAPTIVE_COMPACTION_THRESHOLD_KEY =<a name="line.45"></a> +<span class="sourceLineNo">046</span> "hbase.hregion.compacting.memstore.adaptive.compaction.threshold";<a name="line.46"></a> +<span class="sourceLineNo">047</span> private static final double ADAPTIVE_COMPACTION_THRESHOLD_DEFAULT = 0.5;<a name="line.47"></a> +<span class="sourceLineNo">048</span> public static final String ADAPTIVE_INITIAL_COMPACTION_PROBABILITY_KEY =<a name="line.48"></a> +<span class="sourceLineNo">049</span> "hbase.hregion.compacting.memstore.adaptive.compaction.probability";<a name="line.49"></a> +<span class="sourceLineNo">050</span> private static final double ADAPTIVE_INITIAL_COMPACTION_PROBABILITY_DEFAULT = 0.5;<a name="line.50"></a> +<span class="sourceLineNo">051</span> private static final double ADAPTIVE_PROBABILITY_FACTOR = 1.02;<a name="line.51"></a> +<span class="sourceLineNo">052</span><a name="line.52"></a> +<span class="sourceLineNo">053</span> private double compactionThreshold;<a name="line.53"></a> +<span class="sourceLineNo">054</span> private double initialCompactionProbability;<a name="line.54"></a> +<span class="sourceLineNo">055</span> private double compactionProbability;<a name="line.55"></a> +<span class="sourceLineNo">056</span> private Random rand = new Random();<a name="line.56"></a> +<span class="sourceLineNo">057</span> private double numCellsInVersionedList = 0;<a name="line.57"></a> +<span class="sourceLineNo">058</span> private boolean compacted = false;<a name="line.58"></a> +<span class="sourceLineNo">059</span><a name="line.59"></a> +<span class="sourceLineNo">060</span> public AdaptiveMemStoreCompactionStrategy(Configuration conf, String cfName) {<a name="line.60"></a> +<span class="sourceLineNo">061</span> super(conf, cfName);<a name="line.61"></a> +<span class="sourceLineNo">062</span> compactionThreshold = conf.getDouble(ADAPTIVE_COMPACTION_THRESHOLD_KEY,<a name="line.62"></a> +<span class="sourceLineNo">063</span> ADAPTIVE_COMPACTION_THRESHOLD_DEFAULT);<a name="line.63"></a> +<span class="sourceLineNo">064</span> initialCompactionProbability = conf.getDouble(ADAPTIVE_INITIAL_COMPACTION_PROBABILITY_KEY,<a name="line.64"></a> +<span class="sourceLineNo">065</span> ADAPTIVE_INITIAL_COMPACTION_PROBABILITY_DEFAULT);<a name="line.65"></a> +<span class="sourceLineNo">066</span> resetStats();<a name="line.66"></a> +<span class="sourceLineNo">067</span> }<a name="line.67"></a> +<span class="sourceLineNo">068</span><a name="line.68"></a> +<span class="sourceLineNo">069</span> @Override public Action getAction(VersionedSegmentsList versionedList) {<a name="line.69"></a> +<span class="sourceLineNo">070</span> if (versionedList.getEstimatedUniquesFrac() < 1.0 - compactionThreshold) {<a name="line.70"></a> +<span class="sourceLineNo">071</span> double r = rand.nextDouble();<a name="line.71"></a> +<span class="sourceLineNo">072</span> if(r < compactionProbability) {<a name="line.72"></a> +<span class="sourceLineNo">073</span> numCellsInVersionedList = versionedList.getNumOfCells();<a name="line.73"></a> +<span class="sourceLineNo">074</span> compacted = true;<a name="line.74"></a> +<span class="sourceLineNo">075</span> return compact(versionedList,<a name="line.75"></a> +<span class="sourceLineNo">076</span> getName() + " (compaction probability=" + compactionProbability + ")");<a name="line.76"></a> <span class="sourceLineNo">077</span> }<a name="line.77"></a> <span class="sourceLineNo">078</span> }<a name="line.78"></a> <span class="sourceLineNo">079</span> compacted = false;<a name="line.79"></a> <span class="sourceLineNo">080</span> return simpleMergeOrFlatten(versionedList,<a name="line.80"></a> -<span class="sourceLineNo">081</span> name+" (compaction probability="+compactionProbability+")");<a name="line.81"></a> +<span class="sourceLineNo">081</span> getName() + " (compaction probability=" + compactionProbability + ")");<a name="line.81"></a> <span class="sourceLineNo">082</span> }<a name="line.82"></a> <span class="sourceLineNo">083</span><a name="line.83"></a> <span class="sourceLineNo">084</span> @Override<a name="line.84"></a> @@ -120,7 +120,11 @@ <span class="sourceLineNo">112</span> return Action.FLATTEN;<a name="line.112"></a> <span class="sourceLineNo">113</span> }<a name="line.113"></a> <span class="sourceLineNo">114</span><a name="line.114"></a> -<span class="sourceLineNo">115</span>}<a name="line.115"></a> +<span class="sourceLineNo">115</span> @Override<a name="line.115"></a> +<span class="sourceLineNo">116</span> protected String getName() {<a name="line.116"></a> +<span class="sourceLineNo">117</span> return NAME;<a name="line.117"></a> +<span class="sourceLineNo">118</span> }<a name="line.118"></a> +<span class="sourceLineNo">119</span>}<a name="line.119"></a>