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Yu Li commented on HBASE-17020: ------------------------------- Thanks for the confirm, opened HBASE-17070 to track this. > keylen in midkey() dont computed correctly > ------------------------------------------ > > Key: HBASE-17020 > URL: https://issues.apache.org/jira/browse/HBASE-17020 > Project: HBase > Issue Type: Bug > Components: HFile > Affects Versions: 2.0.0, 1.3.0, 1.4.0, 1.1.7, 0.98.23, 1.2.4 > Reporter: Yu Sun > Assignee: Yu Sun > Fix For: 2.0.0, 1.4.0, 1.2.5, 0.98.24, 1.1.8 > > Attachments: HBASE-17020-branch-0.98.patch, HBASE-17020-v1.patch, > HBASE-17020-v2.patch, HBASE-17020-v2.patch, HBASE-17020-v3-branch1.1.patch, > HBASE-17020.branch-0.98.patch, HBASE-17020.branch-0.98.patch, > HBASE-17020.branch-1.1.patch > > > in CellBasedKeyBlockIndexReader.midkey(): > {code} > ByteBuff b = midLeafBlock.getBufferWithoutHeader(); > int numDataBlocks = b.getIntAfterPosition(0); > int keyRelOffset = b.getIntAfterPosition(Bytes.SIZEOF_INT * > (midKeyEntry + 1)); > int keyLen = b.getIntAfterPosition(Bytes.SIZEOF_INT * (midKeyEntry > + 2)) - keyRelOffset; > {code} > the local varible keyLen get this should be total length of: > SECONDARY_INDEX_ENTRY_OVERHEAD + firstKey.length; > the code is: > {code} > void add(byte[] firstKey, long blockOffset, int onDiskDataSize, > long curTotalNumSubEntries) { > // Record the offset for the secondary index > secondaryIndexOffsetMarks.add(curTotalNonRootEntrySize); > curTotalNonRootEntrySize += SECONDARY_INDEX_ENTRY_OVERHEAD > + firstKey.length; > {code} > when the midkey last entry of a leaf-level index block, this may throw: > {quote} > 2016-10-01 12:27:55,186 ERROR [MemStoreFlusher.0] > regionserver.MemStoreFlusher: Cache flusher failed for entry [flush region > pora_6_item_feature,0061:,1473838922457.12617bc4ebbfd171018bf96ac9bdd2a7.] > java.lang.ArrayIndexOutOfBoundsException > at > org.apache.hadoop.hbase.util.ByteBufferUtils.copyFromBufferToArray(ByteBufferUtils.java:936) > at > org.apache.hadoop.hbase.nio.SingleByteBuff.toBytes(SingleByteBuff.java:303) > at > org.apache.hadoop.hbase.io.hfile.HFileBlockIndex$CellBasedKeyBlockIndexReader.midkey(HFileBlockIndex.java:419) > at > org.apache.hadoop.hbase.io.hfile.HFileReaderImpl.midkey(HFileReaderImpl.java:1519) > at > org.apache.hadoop.hbase.regionserver.StoreFile$Reader.midkey(StoreFile.java:1520) > at > org.apache.hadoop.hbase.regionserver.StoreFile.getFileSplitPoint(StoreFile.java:706) > at > org.apache.hadoop.hbase.regionserver.DefaultStoreFileManager.getSplitPoint(DefaultStoreFileManager.java:126) > at > org.apache.hadoop.hbase.regionserver.HStore.getSplitPoint(HStore.java:1983) > at > org.apache.hadoop.hbase.regionserver.ConstantFamilySizeRegionSplitPolicy.getSplitPoint(ConstantFamilySizeRegionSplitPolicy.java:77) > at > org.apache.hadoop.hbase.regionserver.HRegion.checkSplit(HRegion.java:7756) > at > org.apache.hadoop.hbase.regionserver.MemStoreFlusher.flushRegion(MemStoreFlusher.java:513) > at > org.apache.hadoop.hbase.regionserver.MemStoreFlusher.flushRegion(MemStoreFlusher.java:471) > at > org.apache.hadoop.hbase.regionserver.MemStoreFlusher.access$800(MemStoreFlusher.java:75) > at > org.apache.hadoop.hbase.regionserver.MemStoreFlusher$FlushHandler.run(MemStoreFlusher.java:259) > at java.lang.Thread.run(Thread.java:756) > {quote} -- This message was sent by Atlassian JIRA (v6.3.4#6332)