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https://issues.apache.org/jira/browse/HBASE-6871?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13465033#comment-13465033
]
Lars Hofhansl commented on HBASE-6871:
--------------------------------------
The trunk patch applies to 0.94 as well (with some offsets), so that's fine. I
assume the same will be true for 0.92.
> HFileBlockIndex Write Error BlockIndex in HFile V2
> --------------------------------------------------
>
> Key: HBASE-6871
> URL: https://issues.apache.org/jira/browse/HBASE-6871
> Project: HBase
> Issue Type: Bug
> Components: HFile
> Affects Versions: 0.94.1
> Environment: redhat 5u4
> Reporter: Fenng Wang
> Priority: Critical
> Fix For: 0.94.3, 0.96.0
>
> Attachments: 428a400628ae412ca45d39fce15241fd.hfile, 6871.txt,
> 787179746cc347ce9bb36f1989d17419.hfile,
> 960a026ca370464f84903ea58114bc75.hfile,
> d0026fa8d59b4df291718f59dd145aad.hfile, D5703.1.patch, D5703.2.patch,
> D5703.3.patch, D5703.4.patch, D5703.5.patch, hbase-6871-0.94.patch,
> ImportHFile.java, test_hfile_block_index.sh
>
>
> After writing some data, compaction and scan operation both failure, the
> exception message is below:
> 2012-09-18 06:32:26,227 ERROR
> org.apache.hadoop.hbase.regionserver.compactions.CompactionRequest:
> Compaction failed
> regionName=hfile_test,,1347778722498.d220df43fb9d8af4633bd7f547613f9e.,
> storeName=page_info, fileCount=7, fileSize=1.3m (188.0k, 188.0k, 188.0k,
> 188.0k, 188.0k, 185.8k, 223.3k), priority=9,
> time=45826250816757428java.io.IOException: Could not reseek
> StoreFileScanner[HFileScanner for reader
> reader=hdfs://hadoopdev1.cm6:9000/hbase/hfile_test/d220df43fb9d8af4633bd7f547613f9e/page_info/b0f6118f58de47ad9d87cac438ee0895,
> compression=lzo, cacheConf=CacheConfig:enabled [cacheDataOnRead=true]
> [cacheDataOnWrite=false] [cacheIndexesOnWrite=false]
> [cacheBloomsOnWrite=false] [cacheEvictOnClose=false] [cacheCompressed=false],
> firstKey=http://com.truereligionbrandjeans.www/Womens_Dresses/pl/c/Womens_Shirts/pl/c/Womens_Shirts/pl/c/Womens_Shirts/pl/c/Womens_Shirts/pl/c/Womens_Shirts/pl/c/Womens_Shirts/pl/c/Womens_Shirts/pl/c/Womens_Shirts/pl/c/Womens_Shirts/pl/c/Womens_Shirts/pl/c/Womens_Shirts/pl/c/Womens_Shirts/pl/c/Womens_Shirts/pl/c/Womens_Shirts/pl/c/Womens_Shirts/pl/c/Womens_Sweaters/pl/c/Womens_Sweaters/pl/c/Womens_Sweaters/pl/c/Womens_Sweaters/pl/c/Womens_Sweaters/pl/c/Womens_Sweaters/pl/c/Womens_Shirts/pl/c/Womens_Sweaters/pl/c/Womens_Shirts/pl/c/Womens_Shirts/pl/c/Womens_Shirts/pl/c/Womens_Sweaters/pl/c/Womens_Sweaters/pl/c/Womens_Shirts/pl/c/Womens_Shirts/pl/c/Womens_Sweaters/pl/c/Womens_Sweaters/pl/c/Womens_Sweaters/pl/c/Womens_Sweaters/pl/c/Womens_Sweaters/pl/c/4010.html/page_info:anchor_sig/1347764439449/DeleteColumn,
> lastKey=http://com.trura.www//page_info:page_type/1347763395089/Put,
> avgKeyLen=776, avgValueLen=4, entries=12853, length=228611,
> cur=http://com.truereligionbrandjeans.www/Womens_Exclusive_Details/pl/c/4970.html/page_info:is_deleted/1347764003865/Put/vlen=1/ts=0]
> to key
> http://com.truereligionbrandjeans.www/Womens_Exclusive_Details/pl/c/4970.html/page_info:is_deleted/OLDEST_TIMESTAMP/Minimum/vlen=0/ts=0
> at
> org.apache.hadoop.hbase.regionserver.StoreFileScanner.reseek(StoreFileScanner.java:178)
>
> at
> org.apache.hadoop.hbase.regionserver.NonLazyKeyValueScanner.doRealSeek(NonLazyKeyValueScanner.java:54)
>
> at
> org.apache.hadoop.hbase.regionserver.KeyValueHeap.generalizedSeek(KeyValueHeap.java:299)
> at
> org.apache.hadoop.hbase.regionserver.KeyValueHeap.reseek(KeyValueHeap.java:244)
>
> at
> org.apache.hadoop.hbase.regionserver.StoreScanner.reseek(StoreScanner.java:521)
>
> at
> org.apache.hadoop.hbase.regionserver.StoreScanner.next(StoreScanner.java:402)
> at
> org.apache.hadoop.hbase.regionserver.Store.compactStore(Store.java:1570)
>
> at org.apache.hadoop.hbase.regionserver.Store.compact(Store.java:997)
>
> at
> org.apache.hadoop.hbase.regionserver.HRegion.compact(HRegion.java:1216)
> at
> org.apache.hadoop.hbase.regionserver.compactions.CompactionRequest.run(CompactionRequest.java:250)
>
> at
> java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886)
>
> at
> java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908)
> at java.lang.Thread.run(Thread.java:662)
> Caused by: java.io.IOException: Expected block type LEAF_INDEX, but got
> INTERMEDIATE_INDEX: blockType=INTERMEDIATE_INDEX,
> onDiskSizeWithoutHeader=8514, uncompressedSizeWithoutHeader=131837,
> prevBlockOffset=-1,
> dataBeginsWith=\x00\x00\x00\x9B\x00\x00\x00\x00\x00\x00\x03#\x00\x00\x050\x00\x00\x08\xB7\x00\x00\x0Cr\x00\x00\x0F\xFA\x00\x00\x120,
> fileOffset=218942 at
> org.apache.hadoop.hbase.io.hfile.HFileReaderV2.validateBlockType(HFileReaderV2.java:378)
> at
> org.apache.hadoop.hbase.io.hfile.HFileReaderV2.readBlock(HFileReaderV2.java:331)
> at
> org.apache.hadoop.hbase.io.hfile.HFileBlockIndex$BlockIndexReader.seekToDataBlock(HFileBlockIndex.java:213)
> at
> org.apache.hadoop.hbase.io.hfile.HFileReaderV2$AbstractScannerV2.seekTo(HFileReaderV2.java:455)
> at
> org.apache.hadoop.hbase.io.hfile.HFileReaderV2$AbstractScannerV2.reseekTo(HFileReaderV2.java:493)
>
> at
> org.apache.hadoop.hbase.regionserver.StoreFileScanner.reseekAtOrAfter(StoreFileScanner.java:242)
>
> at
> org.apache.hadoop.hbase.regionserver.StoreFileScanner.reseek(StoreFileScanner.java:167)
> After some debug works，I found that when hfile closing, if the rootChunk is
> empty, the only one curInlineChunk will upgrade to root chunk. But if the
> last block flushing make curInlineChunk exceed max index block size, the root
> chunk(upgrade from curInlineChunk) will be splited into intermediate index
> blocks, and the index level is set to 2. So when BlockIndexReader read the
> root index, it expects the next level index block is leaf index(index
> level=2), but the on disk index block is intermediate block, the error
> happened.
> After I add some code to check curInlineChunk's size when rootChunk is empty
> in shouldWriteBlock(boolean closing), this bug can be fixed.
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