http://git-wip-us.apache.org/repos/asf/hbase-site/blob/40ef21e4/devapidocs/src-html/org/apache/hadoop/hbase/io/hfile/HFileBlock.BlockIterator.html ---------------------------------------------------------------------- diff --git a/devapidocs/src-html/org/apache/hadoop/hbase/io/hfile/HFileBlock.BlockIterator.html b/devapidocs/src-html/org/apache/hadoop/hbase/io/hfile/HFileBlock.BlockIterator.html index 1587e5e..643fdf6 100644 --- a/devapidocs/src-html/org/apache/hadoop/hbase/io/hfile/HFileBlock.BlockIterator.html +++ b/devapidocs/src-html/org/apache/hadoop/hbase/io/hfile/HFileBlock.BlockIterator.html @@ -1702,7 +1702,7 @@ <span class="sourceLineNo">1694</span> b.assumeUncompressed();<a name="line.1694"></a> <span class="sourceLineNo">1695</span> }<a name="line.1695"></a> <span class="sourceLineNo">1696</span><a name="line.1696"></a> -<span class="sourceLineNo">1697</span> if (verifyChecksum && !validateBlockChecksum(b, onDiskBlock, hdrSize)) {<a name="line.1697"></a> +<span class="sourceLineNo">1697</span> if (verifyChecksum && !validateBlockChecksum(b, offset, onDiskBlock, hdrSize)) {<a name="line.1697"></a> <span class="sourceLineNo">1698</span> return null; // checksum mismatch<a name="line.1698"></a> <span class="sourceLineNo">1699</span> }<a name="line.1699"></a> <span class="sourceLineNo">1700</span><a name="line.1700"></a> @@ -1751,220 +1751,221 @@ <span class="sourceLineNo">1743</span> * If there is a checksum mismatch, then return false. 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Excludes checksum. */<a name="line.1859"></a> +<span class="sourceLineNo">1860</span> int getOnDiskDataSizeWithHeader() {<a name="line.1860"></a> +<span class="sourceLineNo">1861</span> return this.onDiskDataSizeWithHeader;<a name="line.1861"></a> +<span class="sourceLineNo">1862</span> }<a name="line.1862"></a> +<span class="sourceLineNo">1863</span><a name="line.1863"></a> +<span class="sourceLineNo">1864</span> /**<a name="line.1864"></a> +<span class="sourceLineNo">1865</span> * Calcuate the number of bytes required to store all the checksums<a name="line.1865"></a> +<span class="sourceLineNo">1866</span> * for this block. 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http://git-wip-us.apache.org/repos/asf/hbase-site/blob/40ef21e4/devapidocs/src-html/org/apache/hadoop/hbase/io/hfile/HFileBlock.BlockWritable.html ---------------------------------------------------------------------- diff --git a/devapidocs/src-html/org/apache/hadoop/hbase/io/hfile/HFileBlock.BlockWritable.html b/devapidocs/src-html/org/apache/hadoop/hbase/io/hfile/HFileBlock.BlockWritable.html index 1587e5e..643fdf6 100644 --- a/devapidocs/src-html/org/apache/hadoop/hbase/io/hfile/HFileBlock.BlockWritable.html +++ b/devapidocs/src-html/org/apache/hadoop/hbase/io/hfile/HFileBlock.BlockWritable.html @@ -1702,7 +1702,7 @@ <span class="sourceLineNo">1694</span> b.assumeUncompressed();<a name="line.1694"></a> <span class="sourceLineNo">1695</span> }<a name="line.1695"></a> <span class="sourceLineNo">1696</span><a name="line.1696"></a> -<span class="sourceLineNo">1697</span> if (verifyChecksum && !validateBlockChecksum(b, onDiskBlock, hdrSize)) {<a name="line.1697"></a> +<span class="sourceLineNo">1697</span> if (verifyChecksum && !validateBlockChecksum(b, offset, onDiskBlock, hdrSize)) {<a name="line.1697"></a> <span class="sourceLineNo">1698</span> return null; // checksum mismatch<a name="line.1698"></a> <span class="sourceLineNo">1699</span> }<a name="line.1699"></a> <span class="sourceLineNo">1700</span><a name="line.1700"></a> @@ -1751,220 +1751,221 @@ <span class="sourceLineNo">1743</span> * If there is a checksum mismatch, then return false. 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Excludes checksum. */<a name="line.1859"></a> +<span class="sourceLineNo">1860</span> int getOnDiskDataSizeWithHeader() {<a name="line.1860"></a> +<span class="sourceLineNo">1861</span> return this.onDiskDataSizeWithHeader;<a name="line.1861"></a> +<span class="sourceLineNo">1862</span> }<a name="line.1862"></a> +<span class="sourceLineNo">1863</span><a name="line.1863"></a> +<span class="sourceLineNo">1864</span> /**<a name="line.1864"></a> +<span class="sourceLineNo">1865</span> * Calcuate the number of bytes required to store all the checksums<a name="line.1865"></a> +<span class="sourceLineNo">1866</span> * for this block. Each checksum value is a 4 byte integer.<a name="line.1866"></a> +<span class="sourceLineNo">1867</span> */<a name="line.1867"></a> +<span class="sourceLineNo">1868</span> int totalChecksumBytes() {<a name="line.1868"></a> +<span class="sourceLineNo">1869</span> // If the hfile block has minorVersion 0, then there are no checksum<a name="line.1869"></a> +<span class="sourceLineNo">1870</span> // data to validate. Similarly, a zero value in this.bytesPerChecksum<a name="line.1870"></a> +<span class="sourceLineNo">1871</span> // indicates that cached blocks do not have checksum data because<a name="line.1871"></a> +<span class="sourceLineNo">1872</span> // checksums were already validated when the block was read from disk.<a name="line.1872"></a> +<span class="sourceLineNo">1873</span> if (!fileContext.isUseHBaseChecksum() || this.fileContext.getBytesPerChecksum() == 0) {<a name="line.1873"></a> +<span class="sourceLineNo">1874</span> return 0;<a name="line.1874"></a> +<span class="sourceLineNo">1875</span> }<a name="line.1875"></a> +<span class="sourceLineNo">1876</span> return (int) ChecksumUtil.numBytes(onDiskDataSizeWithHeader,<a name="line.1876"></a> +<span class="sourceLineNo">1877</span> this.fileContext.getBytesPerChecksum());<a name="line.1877"></a> +<span class="sourceLineNo">1878</span> }<a name="line.1878"></a> +<span class="sourceLineNo">1879</span><a name="line.1879"></a> +<span class="sourceLineNo">1880</span> /**<a name="line.1880"></a> +<span class="sourceLineNo">1881</span> * Returns the size of this block header.<a name="line.1881"></a> +<span class="sourceLineNo">1882</span> */<a name="line.1882"></a> +<span class="sourceLineNo">1883</span> public int headerSize() {<a name="line.1883"></a> +<span class="sourceLineNo">1884</span> return headerSize(this.fileContext.isUseHBaseChecksum());<a name="line.1884"></a> +<span class="sourceLineNo">1885</span> }<a name="line.1885"></a> +<span class="sourceLineNo">1886</span><a name="line.1886"></a> +<span class="sourceLineNo">1887</span> /**<a name="line.1887"></a> +<span class="sourceLineNo">1888</span> * Maps a minor version to the size of the header.<a name="line.1888"></a> +<span class="sourceLineNo">1889</span> */<a name="line.1889"></a> +<span class="sourceLineNo">1890</span> public static int headerSize(boolean usesHBaseChecksum) {<a name="line.1890"></a> +<span class="sourceLineNo">1891</span> if (usesHBaseChecksum) {<a name="line.1891"></a> +<span class="sourceLineNo">1892</span> return HConstants.HFILEBLOCK_HEADER_SIZE;<a name="line.1892"></a> +<span class="sourceLineNo">1893</span> }<a name="line.1893"></a> +<span class="sourceLineNo">1894</span> return HConstants.HFILEBLOCK_HEADER_SIZE_NO_CHECKSUM;<a name="line.1894"></a> +<span class="sourceLineNo">1895</span> }<a name="line.1895"></a> +<span class="sourceLineNo">1896</span><a name="line.1896"></a> +<span class="sourceLineNo">1897</span> /**<a name="line.1897"></a> +<span class="sourceLineNo">1898</span> * Return the appropriate DUMMY_HEADER for the minor version<a name="line.1898"></a> +<span class="sourceLineNo">1899</span> */<a name="line.1899"></a> +<span class="sourceLineNo">1900</span> public byte[] getDummyHeaderForVersion() {<a name="line.1900"></a> +<span class="sourceLineNo">1901</span> return getDummyHeaderForVersion(this.fileContext.isUseHBaseChecksum());<a name="line.1901"></a> +<span class="sourceLineNo">1902</span> }<a name="line.1902"></a> +<span class="sourceLineNo">1903</span><a name="line.1903"></a> +<span class="sourceLineNo">1904</span> /**<a name="line.1904"></a> +<span class="sourceLineNo">1905</span> * Return the appropriate DUMMY_HEADER for the minor version<a name="line.1905"></a> +<span class="sourceLineNo">1906</span> */<a name="line.1906"></a> +<span class="sourceLineNo">1907</span> static private byte[] getDummyHeaderForVersion(boolean usesHBaseChecksum) {<a name="line.1907"></a> +<span class="sourceLineNo">1908</span> if (usesHBaseChecksum) {<a name="line.1908"></a> +<span class="sourceLineNo">1909</span> return HConstants.HFILEBLOCK_DUMMY_HEADER;<a name="line.1909"></a> +<span class="sourceLineNo">1910</span> }<a name="line.1910"></a> +<span class="sourceLineNo">1911</span> return DUMMY_HEADER_NO_CHECKSUM;<a name="line.1911"></a> +<span class="sourceLineNo">1912</span> }<a name="line.1912"></a> +<span class="sourceLineNo">1913</span><a name="line.1913"></a> +<span class="sourceLineNo">1914</span> /**<a name="line.1914"></a> +<span class="sourceLineNo">1915</span> * @return the HFileContext used to create this HFileBlock. Not necessary the<a name="line.1915"></a> +<span class="sourceLineNo">1916</span> * fileContext for the file from which this block's data was originally read.<a name="line.1916"></a> +<span class="sourceLineNo">1917</span> */<a name="line.1917"></a> +<span class="sourceLineNo">1918</span> public HFileContext getHFileContext() {<a name="line.1918"></a> +<span class="sourceLineNo">1919</span> return this.fileContext;<a name="line.1919"></a> +<span class="sourceLineNo">1920</span> }<a name="line.1920"></a> +<span class="sourceLineNo">1921</span><a name="line.1921"></a> +<span class="sourceLineNo">1922</span> @Override<a name="line.1922"></a> +<span class="sourceLineNo">1923</span> public MemoryType getMemoryType() {<a name="line.1923"></a> +<span class="sourceLineNo">1924</span> return this.memType;<a name="line.1924"></a> +<span class="sourceLineNo">1925</span> }<a name="line.1925"></a> +<span class="sourceLineNo">1926</span><a name="line.1926"></a> +<span class="sourceLineNo">1927</span> /**<a name="line.1927"></a> +<span class="sourceLineNo">1928</span> * @return true if this block is backed by a shared memory area(such as that of a BucketCache).<a name="line.1928"></a> +<span class="sourceLineNo">1929</span> */<a name="line.1929"></a> +<span class="sourceLineNo">1930</span> public boolean usesSharedMemory() {<a name="line.1930"></a> +<span class="sourceLineNo">1931</span> return this.memType == MemoryType.SHARED;<a name="line.1931"></a> +<span class="sourceLineNo">1932</span> }<a name="line.1932"></a> +<span class="sourceLineNo">1933</span><a name="line.1933"></a> +<span class="sourceLineNo">1934</span> /**<a name="line.1934"></a> +<span class="sourceLineNo">1935</span> * Convert the contents of the block header into a human readable string.<a name="line.1935"></a> +<span class="sourceLineNo">1936</span> * This is mostly helpful for debugging. This assumes that the block<a name="line.1936"></a> +<span class="sourceLineNo">1937</span> * has minor version > 0.<a name="line.1937"></a> +<span class="sourceLineNo">1938</span> */<a name="line.1938"></a> +<span class="sourceLineNo">1939</span> static String toStringHeader(ByteBuff buf) throws IOException {<a name="line.1939"></a> +<span class="sourceLineNo">1940</span> byte[] magicBuf = new byte[Math.min(buf.limit() - buf.position(), BlockType.MAGIC_LENGTH)];<a name="line.1940"></a> +<span class="sourceLineNo">1941</span> buf.get(magicBuf);<a name="line.1941"></a> +<span class="sourceLineNo">1942</span> BlockType bt = BlockType.parse(magicBuf, 0, BlockType.MAGIC_LENGTH);<a name="line.1942"></a> +<span class="sourceLineNo">1943</span> int compressedBlockSizeNoHeader = buf.getInt();<a name="line.1943"></a> +<span class="sourceLineNo">1944</span> int uncompressedBlockSizeNoHeader = buf.getInt();<a name="line.1944"></a> +<span class="sourceLineNo">1945</span> long prevBlockOffset = buf.getLong();<a name="line.1945"></a> +<span class="sourceLineNo">1946</span> byte cksumtype = buf.get();<a name="line.1946"></a> +<span class="sourceLineNo">1947</span> long bytesPerChecksum = buf.getInt();<a name="line.1947"></a> +<span class="sourceLineNo">1948</span> long onDiskDataSizeWithHeader = buf.getInt();<a name="line.1948"></a> +<span class="sourceLineNo">1949</span> return " Header dump: magic: " + Bytes.toString(magicBuf) +<a name="line.1949"></a> +<span class="sourceLineNo">1950</span> " blockType " + bt +<a name="line.1950"></a> +<span class="sourceLineNo">1951</span> " compressedBlockSizeNoHeader " +<a name="line.1951"></a> +<span class="sourceLineNo">1952</span> compressedBlockSizeNoHeader +<a name="line.1952"></a> +<span class="sourceLineNo">1953</span> " uncompressedBlockSizeNoHeader " +<a name="line.1953"></a> +<span class="sourceLineNo">1954</span> uncompressedBlockSizeNoHeader +<a name="line.1954"></a> +<span class="sourceLineNo">1955</span> " prevBlockOffset " + prevBlockOffset +<a name="line.1955"></a> +<span class="sourceLineNo">1956</span> " checksumType " + ChecksumType.codeToType(cksumtype) +<a name="line.1956"></a> +<span class="sourceLineNo">1957</span> " bytesPerChecksum " + bytesPerChecksum +<a name="line.1957"></a> +<span class="sourceLineNo">1958</span> " onDiskDataSizeWithHeader " + onDiskDataSizeWithHeader;<a name="line.1958"></a> +<span class="sourceLineNo">1959</span> }<a name="line.1959"></a> +<span class="sourceLineNo">1960</span>}<a name="line.1960"></a>