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https://issues.apache.org/jira/browse/HBASE-1046?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12653428#action_12653428
]
Andrew Purtell commented on HBASE-1046:
---------------------------------------
I think 10.30.94.49 and 10.30.94.54 tried to compact the same region at the
same time.
> NPE during compaction/split breaks table
> ----------------------------------------
>
> Key: HBASE-1046
> URL: https://issues.apache.org/jira/browse/HBASE-1046
> Project: Hadoop HBase
> Issue Type: Bug
> Components: regionserver
> Reporter: Andrew Purtell
> Priority: Blocker
> Fix For: 0.19.0
>
>
> After reassignment of region split, scanners (mapred tasks) fail:
> org.apache.hadoop.hbase.client.RetriesExhaustedException: Trying to contact
> region server 10.30.94.49:60020 for region
> content,c4e518dc579ca98bf97ea13d1f7c80fc,1228407504257, row
> 'c4e518dc579ca98bf97ea13d1f7c80fc', but failed after 10 attempts.
> Exceptions:
> java.io.IOException: java.io.IOException: HStoreScanner failed construction
> at
> org.apache.hadoop.hbase.regionserver.StoreFileScanner.(StoreFileScanner.java:70)
> at
> org.apache.hadoop.hbase.regionserver.HStoreScanner.(HStoreScanner.java:84)
> at
> org.apache.hadoop.hbase.regionserver.HStore.getScanner(HStore.java:2113)
> at
> org.apache.hadoop.hbase.regionserver.HRegion$HScanner.(HRegion.java:1847)
> at
> org.apache.hadoop.hbase.regionserver.HRegion.getScanner(HRegion.java:1158)
> at
> org.apache.hadoop.hbase.regionserver.HRegionServer.openScanner(HRegionServer.java:1521)
> at sun.reflect.GeneratedMethodAccessor18.invoke(Unknown Source)
> at
> sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
> at java.lang.reflect.Method.invoke(Method.java:597)
> at org.apache.hadoop.hbase.ipc.HbaseRPC$Server.call(HbaseRPC.java:634)
> at org.apache.hadoop.ipc.Server$Handler.run(Server.java:888)
> Caused by: java.io.FileNotFoundException: File does not exist:
> hdfs://sjdc-atr-dc-1.atr.trendmicro.com:50000/data/hbase/content/1137747785/info/mapfiles/3405780294391796198/data
> at
> org.apache.hadoop.dfs.DistributedFileSystem.getFileStatus(DistributedFileSystem.java:394)
> at org.apache.hadoop.fs.FileSystem.getLength(FileSystem.java:695)
> at org.apache.hadoop.io.SequenceFile$Reader.(SequenceFile.java:1420)
> at org.apache.hadoop.io.SequenceFile$Reader.(SequenceFile.java:1415)
> at
> org.apache.hadoop.io.MapFile$Reader.createDataFileReader(MapFile.java:301)
> at
> org.apache.hadoop.hbase.io.HBaseMapFile$HBaseReader.createDataFileReader(HBaseMapFile.java:98)
> at org.apache.hadoop.io.MapFile$Reader.open(MapFile.java:283)
> at
> org.apache.hadoop.hbase.io.HBaseMapFile$HBaseReader.(HBaseMapFile.java:81)
> at
> org.apache.hadoop.hbase.io.BloomFilterMapFile$Reader.(BloomFilterMapFile.java:66)
> at
> org.apache.hadoop.hbase.io.HalfMapFileReader.(HalfMapFileReader.java:86)
> at
> org.apache.hadoop.hbase.regionserver.HStoreFile.getReader(HStoreFile.java:438)
> at
> org.apache.hadoop.hbase.regionserver.StoreFileScanner.openReaders(StoreFileScanner.java:96)
> at
> org.apache.hadoop.hbase.regionserver.StoreFileScanner.(StoreFileScanner.java:67)
> ... 10 more
> According to the master the regions around this row are:
> content,c4580f7292ceb2f6c8d732d935302633,1228328680554
> 10.30.94.50:60020 693011073 c4580f7292ceb2f6c8d732d935302633
> c4e518dc579ca98bf97ea13d1f7c80fc
> content,c4e518dc579ca98bf97ea13d1f7c80fc,1228407504257
> 10.30.94.49:60020 2031068422 c4e518dc579ca98bf97ea13d1f7c80fc
> c528c8864e67a3addcb50587586dfe38
> On 10.30.94.49, just before the HStoreScanner exceptions begin:
> 2008-12-04 16:18:30,538 INFO
> org.apache.hadoop.hbase.regionserver.HRegionServer: MSG_REGION_OPEN:
> content,c528c8864e67a3addcb50587586dfe38,1228407504257
> 2008-12-04 16:18:30,539 INFO
> org.apache.hadoop.hbase.regionserver.HRegionServer: MSG_REGION_OPEN:
> content,c4e518dc579ca98bf97ea13d1f7c80fc,1228407504257
> 2008-12-04 16:18:30,539 INFO
> org.apache.hadoop.hbase.regionserver.HRegionServer: Worker: MSG_REGION_OPEN:
> content,c528c8864e67a3addcb50587586dfe38,1228407504257
> 2008-12-04 16:18:30,633 INFO org.apache.hadoop.hbase.regionserver.HRegion:
> region content,c528c8864e67a3addcb50587586dfe38,1228407504257/1813242175
> available
> 2008-12-04 16:18:30,633 INFO
> org.apache.hadoop.hbase.regionserver.HRegionServer: Worker: MSG_REGION_OPEN:
> content,c4e518dc579ca98bf97ea13d1f7c80fc,1228407504257
> 2008-12-04 16:18:30,725 INFO org.apache.hadoop.hbase.regionserver.HRegion:
> region content,c4e518dc579ca98bf97ea13d1f7c80fc,1228407504257/2031068422
> available
> 2008-12-04 16:18:36,659 INFO org.apache.hadoop.hbase.regionserver.HRegion:
> starting compaction on region
> content,c528c8864e67a3addcb50587586dfe38,1228407504257
> 2008-12-04 16:18:36,673 ERROR
> org.apache.hadoop.hbase.regionserver.CompactSplitThread: Compaction failed
> for region content,c528c8864e67a3addcb50587586dfe38,1228407504257
> java.lang.NullPointerException
> at
> org.apache.hadoop.hbase.regionserver.HStore.compact(HStore.java:863)
> at
> org.apache.hadoop.hbase.regionserver.HRegion.compactStores(HRegion.java:708)
> at
> org.apache.hadoop.hbase.regionserver.HRegion.compactStores(HRegion.java:666)
> at
> org.apache.hadoop.hbase.regionserver.CompactSplitThread.run(CompactSplitThread.java:87)
> 2008-12-04 16:18:36,689 INFO org.apache.hadoop.hbase.regionserver.HRegion:
> starting compaction on region
> content,c4e518dc579ca98bf97ea13d1f7c80fc,1228407504257
> 2008-12-04 16:18:36,691 ERROR
> org.apache.hadoop.hbase.regionserver.CompactSplitThread: Compaction failed
> for region content,c4e518dc579ca98bf97ea13d1f7c80fc,1228407504257
> java.lang.NullPointerException
> at
> org.apache.hadoop.hbase.regionserver.HStore.compact(HStore.java:863)
> at
> org.apache.hadoop.hbase.regionserver.HRegion.compactStores(HRegion.java:708)
> at
> org.apache.hadoop.hbase.regionserver.HRegion.compactStores(HRegion.java:666)
> at
> org.apache.hadoop.hbase.regionserver.CompactSplitThread.run(CompactSplitThread.java:87)
> This is the region history:
> content,c4e518dc579ca98bf97ea13d1f7c80fc,1228407504257
> Thu, 4 Dec 2008 11:18:33 open Region opened on server : 10.30.94.49
> Thu, 4 Dec 2008 11:18:30 assignment Region assigned to server
> 10.30.94.49:60020
> Thu, 4 Dec 2008 11:18:28 open Region opened on server :
> 10.30.94.54:60020
> Thu, 4 Dec 2008 11:18:25 assignment Region assigned to server
> 10.30.94.54:60020
> Thu, 4 Dec 2008 11:18:25 split Region split from:
> content,c4e518dc579ca98bf97ea13d1f7c80fc,1228328680554
> On 10.30.94.49:
> 2008-12-04 16:17:39,550 INFO
> org.apache.hadoop.hbase.regionserver.HRegionServer:
> MSG_REGION_OPEN: content,c4e518dc579ca98bf97ea13d1f7c80fc,1228328680554
> 2008-12-04 16:17:39,550 INFO
> org.apache.hadoop.hbase.regionserver.HRegionServer:
> MSG_REGION_OPEN: content,61938ad11c92493c1aac82932651b873,1228317826934
> 2008-12-04 16:18:17,469 INFO org.apache.hadoop.hbase.regionserver.HRegion:
> starting compaction on region
> content,c4e518dc579ca98bf97ea13d1f7c80fc,1228328680554
> 2008-12-04 16:18:24,255 INFO org.apache.hadoop.hbase.regionserver.HRegion:
> compac
> tion completed on region
> content,c4e518dc579ca98bf97ea13d1f7c80fc,1228328680554 in 6sec
> 2008-12-04 16:18:24,255 INFO org.apache.hadoop.hbase.regionserver.HRegion:
> Starting split of region
> content,c4e518dc579ca98bf97ea13d1f7c80fc,1228328680554
> 2008-12-04 16:18:24,258 INFO org.apache.hadoop.hbase.regionserver.HRegion:
> Closed content,c4e518dc579ca98bf97ea13d1f7c80fc,1228328680554
> 2008-12-04 16:18:24,745 INFO org.apache.hadoop.hbase.regionserver.HRegion:
> region content,c4e518dc579ca98bf97ea13d1f7c80fc,1228407504257/2031068422
> available
> 2008-12-04 16:18:24,746 INFO org.apache.hadoop.hbase.regionserver.HRegion:
> Closed content,c4e518dc579ca98bf97ea13d1f7c80fc,1228407504257
> 2008-12-04 16:18:25,051 INFO org.apache.hadoop.hbase.regionserver.HRegion:
> region content,c528c8864e67a3addcb50587586dfe38,1228407504257/1813242175
> available
> 2008-12-04 16:18:25,052 INFO org.apache.hadoop.hbase.regionserver.HRegion:
> Closed content,c528c8864e67a3addcb50587586dfe38,1228407504257
> 2008-12-04 16:18:25,066 INFO
> org.apache.hadoop.hbase.regionserver.CompactSplitThread: region split, META
> updated, and report to master all successful. Old region=
> REGION => {NAME => content,c4e518dc579ca98bf97ea13d1f7c80fc,1228328680554',
> STARTKEY => 'c4e518dc579ca98bf97ea13d1f7c80fc', ENDKEY =>
> c56eb508be0009d04429b6977c
> 91a425', ENCODED => 1137747785, OFFLINE => true, SPLIT => true, TABLE =>
> {{NAME => 'content', IS_ROOT => 'false', IS_META => 'false', FAMILIES =>
> [{NAME => 'url', BLOOMFILTER => 'false', VERSIONS => '1', COMPRESSION =>
> 'NONE', LENGTH => '2147483647', TTL => '2592000', IN_MEMORY => 'false',
> BLOCKCACHE => 'false'}, {NAME => 'info', BLOOMFILTER => 'false', VERSIONS =>
> '1', COMPRESSION => 'NONE', LENGTH => '2147483647', TTL => '2592000',
> IN_MEMORY => 'false', BLOCKCACHE => 'false'}, {NAME => 'content', BLOOMFILTER
> => 'false', VERSIONS => '1', COMPRESSION => 'NONE', LENGTH => '2147483647',
> TTL => '2592000', IN_MEMORY => 'false', BLOCKCACHE => 'false'}]}}, new
> regions: content,c4e518dc579ca98bf97ea13d1f7c80fc,1228407504257,
> content,c528c8864e67a3addcb50587586dfe38,1228407504257. Split took 0sec
> On 10.30.94.54:
> 2008-12-04 16:18:25,681 INFO
> org.apache.hadoop.hbase.regionserver.HRegionServer:
> Worker: MSG_REGION_OPEN:
> content,c4e518dc579ca98bf97ea13d1f7c80fc,1228407504257
> 2008-12-04 16:18:25,681 INFO org.apache.hadoop.hbase.regionserver.HRegion:
> starting compaction on region
> content,c528c8864e67a3addcb50587586dfe38,1228407504257
> 2008-12-04 16:18:25,867 INFO org.apache.hadoop.hbase.regionserver.HRegion:
> region content,c4e518dc579ca98bf97ea13d1f7c80fc,1228407504257/2031068422
> available
> 2008-12-04 16:18:32,951 INFO org.apache.hadoop.hbase.regionserver.HRegion:
> compaction completed on region
> content,c528c8864e67a3addcb50587586dfe38,1228407504257 in 7sec
> 2008-12-04 16:18:32,951 INFO org.apache.hadoop.hbase.regionserver.HRegion:
> starting compaction on region
> content,c4e518dc579ca98bf97ea13d1f7c80fc,1228407504257
> 2008-12-04 16:18:35,882 INFO org.apache.hadoop.hbase.regionserver.HRegion:
> compaction completed on region
> content,c4e518dc579ca98bf97ea13d1f7c80fc,1228407504257 in 2sec
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