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Posted to dev@hbase.apache.org by "Andrew Purtell (JIRA)" <ji...@apache.org> on 2009/01/09 21:11:59 UTC

[jira] Created: (HBASE-1115) Regions failed compaction left in open and writable state but are not scannable

Regions failed compaction left in open and writable state but are not scannable
-------------------------------------------------------------------------------

                 Key: HBASE-1115
                 URL: https://issues.apache.org/jira/browse/HBASE-1115
             Project: Hadoop HBase
          Issue Type: Bug
         Environment: apurtell cluster, HBase TRUNK on hadoop 0.18 branch
            Reporter: Andrew Purtell
            Priority: Critical


After an instance of HBASE-1114, where compaction fails, the affected region is left in an open and writable state, but scanners fail construction. Later a manual reassignment via close_region brings the region all the way back up.

Line numbers are for 0.19-on-hadoop-0.18 branch, sorry about that. I'm upgrading to Hadoop 0.19 (finally) this afternoon. 

org.apache.hadoop.hbase.client.RetriesExhaustedException: Trying to contact region server 10.30.94.50:60020 for region content,c84bbfc94b2143e41ba119d159be2958,1231518442461, row 'c84bbfc94b2143e41ba119d159be2958', 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:2119)
	at org.apache.hadoop.hbase.regionserver.HRegion$HScanner.(HRegion.java:1878)
	at org.apache.hadoop.hbase.regionserver.HRegion.getScanner(HRegion.java:1162)
	at org.apache.hadoop.hbase.regionserver.HRegionServer.openScanner(HRegionServer.java:1673)
	at sun.reflect.GeneratedMethodAccessor14.invoke(Unknown Source)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
	at java.lang.reflect.Method.invoke(Method.java:597)
	at org.apache.hadoop.hbase.ipc.HBaseRPC$Server.call(HBaseRPC.java:632)
	at org.apache.hadoop.hbase.ipc.HBaseServer$Handler.run(HBaseServer.java:894)
Caused by: java.io.FileNotFoundException: File does not exist: hdfs://sjdc-atr-dc-1.atr.trendmicro.com:50000/data/hbase/content/1707725801/url/mapfiles/7039742044868774100/data
	at org.apache.hadoop.dfs.DistributedFileSystem.getFileStatus(DistributedFileSystem.java:394)
	at org.apache.hadoop.fs.FileSystem.getLength(FileSystem.java:695)
	at org.apache.hadoop.hbase.io.SequenceFile$Reader.(SequenceFile.java:1431)
	at org.apache.hadoop.hbase.io.SequenceFile$Reader.(SequenceFile.java:1426)
	at org.apache.hadoop.hbase.io.MapFile$Reader.createDataFileReader(MapFile.java:310)
	at org.apache.hadoop.hbase.io.HBaseMapFile$HBaseReader.createDataFileReader(HBaseMapFile.java:96)
	at org.apache.hadoop.hbase.io.MapFile$Reader.open(MapFile.java:292)
	at org.apache.hadoop.hbase.io.HBaseMapFile$HBaseReader.(HBaseMapFile.java:79)
	at org.apache.hadoop.hbase.io.BloomFilterMapFile$Reader.(BloomFilterMapFile.java:65)
	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


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[jira] Commented: (HBASE-1115) Regions failed compaction left in open and writable state but are not scannable

Posted by "Andrew Purtell (JIRA)" <ji...@apache.org>.
    [ https://issues.apache.org/jira/browse/HBASE-1115?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12662505#action_12662505 ] 

Andrew Purtell commented on HBASE-1115:
---------------------------------------

I've seen the same thing after HBASE-1104. This is a broad symptom of compaction failure I suspect.

> Regions failed compaction left in open and writable state but are not scannable
> -------------------------------------------------------------------------------
>
>                 Key: HBASE-1115
>                 URL: https://issues.apache.org/jira/browse/HBASE-1115
>             Project: Hadoop HBase
>          Issue Type: Bug
>         Environment: apurtell cluster, HBase TRUNK on hadoop 0.18 branch
>            Reporter: Andrew Purtell
>            Priority: Critical
>
> After an instance of HBASE-1114, where compaction fails, the affected region is left in an open and writable state, but scanners fail construction. Later a manual reassignment via close_region brings the region all the way back up.
> Line numbers are for 0.19-on-hadoop-0.18 branch, sorry about that. I'm upgrading to Hadoop 0.19 (finally) this afternoon. 
> org.apache.hadoop.hbase.client.RetriesExhaustedException: Trying to contact region server 10.30.94.50:60020 for region content,c84bbfc94b2143e41ba119d159be2958,1231518442461, row 'c84bbfc94b2143e41ba119d159be2958', 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:2119)
> 	at org.apache.hadoop.hbase.regionserver.HRegion$HScanner.(HRegion.java:1878)
> 	at org.apache.hadoop.hbase.regionserver.HRegion.getScanner(HRegion.java:1162)
> 	at org.apache.hadoop.hbase.regionserver.HRegionServer.openScanner(HRegionServer.java:1673)
> 	at sun.reflect.GeneratedMethodAccessor14.invoke(Unknown Source)
> 	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
> 	at java.lang.reflect.Method.invoke(Method.java:597)
> 	at org.apache.hadoop.hbase.ipc.HBaseRPC$Server.call(HBaseRPC.java:632)
> 	at org.apache.hadoop.hbase.ipc.HBaseServer$Handler.run(HBaseServer.java:894)
> Caused by: java.io.FileNotFoundException: File does not exist: hdfs://sjdc-atr-dc-1.atr.trendmicro.com:50000/data/hbase/content/1707725801/url/mapfiles/7039742044868774100/data
> 	at org.apache.hadoop.dfs.DistributedFileSystem.getFileStatus(DistributedFileSystem.java:394)
> 	at org.apache.hadoop.fs.FileSystem.getLength(FileSystem.java:695)
> 	at org.apache.hadoop.hbase.io.SequenceFile$Reader.(SequenceFile.java:1431)
> 	at org.apache.hadoop.hbase.io.SequenceFile$Reader.(SequenceFile.java:1426)
> 	at org.apache.hadoop.hbase.io.MapFile$Reader.createDataFileReader(MapFile.java:310)
> 	at org.apache.hadoop.hbase.io.HBaseMapFile$HBaseReader.createDataFileReader(HBaseMapFile.java:96)
> 	at org.apache.hadoop.hbase.io.MapFile$Reader.open(MapFile.java:292)
> 	at org.apache.hadoop.hbase.io.HBaseMapFile$HBaseReader.(HBaseMapFile.java:79)
> 	at org.apache.hadoop.hbase.io.BloomFilterMapFile$Reader.(BloomFilterMapFile.java:65)
> 	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

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[jira] Updated: (HBASE-1115) Rollback after regions failed compaction

Posted by "Andrew Purtell (JIRA)" <ji...@apache.org>.
     [ https://issues.apache.org/jira/browse/HBASE-1115?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Andrew Purtell updated HBASE-1115:
----------------------------------

    Description: 
When compaction fails the affected region is left in an open and writable state, but scanners fail construction. Later a manual reassignment via close_region brings the region all the way back up.

Should there be rollback after a failed compaction somehow?

org.apache.hadoop.hbase.client.RetriesExhaustedException: Trying to contact region server 10.30.94.50:60020 for region content,c84bbfc94b2143e41ba119d159be2958,1231518442461, row 'c84bbfc94b2143e41ba119d159be2958', 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:2119)
	at org.apache.hadoop.hbase.regionserver.HRegion$HScanner.(HRegion.java:1878)
	at org.apache.hadoop.hbase.regionserver.HRegion.getScanner(HRegion.java:1162)
	at org.apache.hadoop.hbase.regionserver.HRegionServer.openScanner(HRegionServer.java:1673)
	at sun.reflect.GeneratedMethodAccessor14.invoke(Unknown Source)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
	at java.lang.reflect.Method.invoke(Method.java:597)
	at org.apache.hadoop.hbase.ipc.HBaseRPC$Server.call(HBaseRPC.java:632)
	at org.apache.hadoop.hbase.ipc.HBaseServer$Handler.run(HBaseServer.java:894)
Caused by: java.io.FileNotFoundException: File does not exist: hdfs://sjdc-atr-dc-1.atr.trendmicro.com:50000/data/hbase/content/1707725801/url/mapfiles/7039742044868774100/data
	at org.apache.hadoop.dfs.DistributedFileSystem.getFileStatus(DistributedFileSystem.java:394)
	at org.apache.hadoop.fs.FileSystem.getLength(FileSystem.java:695)
	at org.apache.hadoop.hbase.io.SequenceFile$Reader.(SequenceFile.java:1431)
	at org.apache.hadoop.hbase.io.SequenceFile$Reader.(SequenceFile.java:1426)
	at org.apache.hadoop.hbase.io.MapFile$Reader.createDataFileReader(MapFile.java:310)
	at org.apache.hadoop.hbase.io.HBaseMapFile$HBaseReader.createDataFileReader(HBaseMapFile.java:96)
	at org.apache.hadoop.hbase.io.MapFile$Reader.open(MapFile.java:292)
	at org.apache.hadoop.hbase.io.HBaseMapFile$HBaseReader.(HBaseMapFile.java:79)
	at org.apache.hadoop.hbase.io.BloomFilterMapFile$Reader.(BloomFilterMapFile.java:65)
	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


  was:
After an instance of HBASE-1114, where compaction fails, the affected region is left in an open and writable state, but scanners fail construction. Later a manual reassignment via close_region brings the region all the way back up.

Line numbers are for 0.19-on-hadoop-0.18 branch, sorry about that. I'm upgrading to Hadoop 0.19 (finally) this afternoon. 

org.apache.hadoop.hbase.client.RetriesExhaustedException: Trying to contact region server 10.30.94.50:60020 for region content,c84bbfc94b2143e41ba119d159be2958,1231518442461, row 'c84bbfc94b2143e41ba119d159be2958', 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:2119)
	at org.apache.hadoop.hbase.regionserver.HRegion$HScanner.(HRegion.java:1878)
	at org.apache.hadoop.hbase.regionserver.HRegion.getScanner(HRegion.java:1162)
	at org.apache.hadoop.hbase.regionserver.HRegionServer.openScanner(HRegionServer.java:1673)
	at sun.reflect.GeneratedMethodAccessor14.invoke(Unknown Source)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
	at java.lang.reflect.Method.invoke(Method.java:597)
	at org.apache.hadoop.hbase.ipc.HBaseRPC$Server.call(HBaseRPC.java:632)
	at org.apache.hadoop.hbase.ipc.HBaseServer$Handler.run(HBaseServer.java:894)
Caused by: java.io.FileNotFoundException: File does not exist: hdfs://sjdc-atr-dc-1.atr.trendmicro.com:50000/data/hbase/content/1707725801/url/mapfiles/7039742044868774100/data
	at org.apache.hadoop.dfs.DistributedFileSystem.getFileStatus(DistributedFileSystem.java:394)
	at org.apache.hadoop.fs.FileSystem.getLength(FileSystem.java:695)
	at org.apache.hadoop.hbase.io.SequenceFile$Reader.(SequenceFile.java:1431)
	at org.apache.hadoop.hbase.io.SequenceFile$Reader.(SequenceFile.java:1426)
	at org.apache.hadoop.hbase.io.MapFile$Reader.createDataFileReader(MapFile.java:310)
	at org.apache.hadoop.hbase.io.HBaseMapFile$HBaseReader.createDataFileReader(HBaseMapFile.java:96)
	at org.apache.hadoop.hbase.io.MapFile$Reader.open(MapFile.java:292)
	at org.apache.hadoop.hbase.io.HBaseMapFile$HBaseReader.(HBaseMapFile.java:79)
	at org.apache.hadoop.hbase.io.BloomFilterMapFile$Reader.(BloomFilterMapFile.java:65)
	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


       Priority: Major  (was: Critical)
        Summary: Rollback after regions failed compaction  (was: Regions failed compaction left in open and writable state but are not scannable)

Edited issue title to broaden, marked down

> Rollback after regions failed compaction
> ----------------------------------------
>
>                 Key: HBASE-1115
>                 URL: https://issues.apache.org/jira/browse/HBASE-1115
>             Project: Hadoop HBase
>          Issue Type: Bug
>         Environment: apurtell cluster, HBase TRUNK on hadoop 0.18 branch
>            Reporter: Andrew Purtell
>
> When compaction fails the affected region is left in an open and writable state, but scanners fail construction. Later a manual reassignment via close_region brings the region all the way back up.
> Should there be rollback after a failed compaction somehow?
> org.apache.hadoop.hbase.client.RetriesExhaustedException: Trying to contact region server 10.30.94.50:60020 for region content,c84bbfc94b2143e41ba119d159be2958,1231518442461, row 'c84bbfc94b2143e41ba119d159be2958', 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:2119)
> 	at org.apache.hadoop.hbase.regionserver.HRegion$HScanner.(HRegion.java:1878)
> 	at org.apache.hadoop.hbase.regionserver.HRegion.getScanner(HRegion.java:1162)
> 	at org.apache.hadoop.hbase.regionserver.HRegionServer.openScanner(HRegionServer.java:1673)
> 	at sun.reflect.GeneratedMethodAccessor14.invoke(Unknown Source)
> 	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
> 	at java.lang.reflect.Method.invoke(Method.java:597)
> 	at org.apache.hadoop.hbase.ipc.HBaseRPC$Server.call(HBaseRPC.java:632)
> 	at org.apache.hadoop.hbase.ipc.HBaseServer$Handler.run(HBaseServer.java:894)
> Caused by: java.io.FileNotFoundException: File does not exist: hdfs://sjdc-atr-dc-1.atr.trendmicro.com:50000/data/hbase/content/1707725801/url/mapfiles/7039742044868774100/data
> 	at org.apache.hadoop.dfs.DistributedFileSystem.getFileStatus(DistributedFileSystem.java:394)
> 	at org.apache.hadoop.fs.FileSystem.getLength(FileSystem.java:695)
> 	at org.apache.hadoop.hbase.io.SequenceFile$Reader.(SequenceFile.java:1431)
> 	at org.apache.hadoop.hbase.io.SequenceFile$Reader.(SequenceFile.java:1426)
> 	at org.apache.hadoop.hbase.io.MapFile$Reader.createDataFileReader(MapFile.java:310)
> 	at org.apache.hadoop.hbase.io.HBaseMapFile$HBaseReader.createDataFileReader(HBaseMapFile.java:96)
> 	at org.apache.hadoop.hbase.io.MapFile$Reader.open(MapFile.java:292)
> 	at org.apache.hadoop.hbase.io.HBaseMapFile$HBaseReader.(HBaseMapFile.java:79)
> 	at org.apache.hadoop.hbase.io.BloomFilterMapFile$Reader.(BloomFilterMapFile.java:65)
> 	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

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[jira] Commented: (HBASE-1115) Regions failed compaction left in open and writable state but are not scannable

Posted by "stack (JIRA)" <ji...@apache.org>.
    [ https://issues.apache.org/jira/browse/HBASE-1115?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12662574#action_12662574 ] 

stack commented on HBASE-1115:
------------------------------

I can't say for certain but seems related to hbase-1114 Andrew?  The FNFE is root of the above.  Seemed to start after the NPEs.

> Regions failed compaction left in open and writable state but are not scannable
> -------------------------------------------------------------------------------
>
>                 Key: HBASE-1115
>                 URL: https://issues.apache.org/jira/browse/HBASE-1115
>             Project: Hadoop HBase
>          Issue Type: Bug
>         Environment: apurtell cluster, HBase TRUNK on hadoop 0.18 branch
>            Reporter: Andrew Purtell
>            Priority: Critical
>
> After an instance of HBASE-1114, where compaction fails, the affected region is left in an open and writable state, but scanners fail construction. Later a manual reassignment via close_region brings the region all the way back up.
> Line numbers are for 0.19-on-hadoop-0.18 branch, sorry about that. I'm upgrading to Hadoop 0.19 (finally) this afternoon. 
> org.apache.hadoop.hbase.client.RetriesExhaustedException: Trying to contact region server 10.30.94.50:60020 for region content,c84bbfc94b2143e41ba119d159be2958,1231518442461, row 'c84bbfc94b2143e41ba119d159be2958', 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:2119)
> 	at org.apache.hadoop.hbase.regionserver.HRegion$HScanner.(HRegion.java:1878)
> 	at org.apache.hadoop.hbase.regionserver.HRegion.getScanner(HRegion.java:1162)
> 	at org.apache.hadoop.hbase.regionserver.HRegionServer.openScanner(HRegionServer.java:1673)
> 	at sun.reflect.GeneratedMethodAccessor14.invoke(Unknown Source)
> 	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
> 	at java.lang.reflect.Method.invoke(Method.java:597)
> 	at org.apache.hadoop.hbase.ipc.HBaseRPC$Server.call(HBaseRPC.java:632)
> 	at org.apache.hadoop.hbase.ipc.HBaseServer$Handler.run(HBaseServer.java:894)
> Caused by: java.io.FileNotFoundException: File does not exist: hdfs://sjdc-atr-dc-1.atr.trendmicro.com:50000/data/hbase/content/1707725801/url/mapfiles/7039742044868774100/data
> 	at org.apache.hadoop.dfs.DistributedFileSystem.getFileStatus(DistributedFileSystem.java:394)
> 	at org.apache.hadoop.fs.FileSystem.getLength(FileSystem.java:695)
> 	at org.apache.hadoop.hbase.io.SequenceFile$Reader.(SequenceFile.java:1431)
> 	at org.apache.hadoop.hbase.io.SequenceFile$Reader.(SequenceFile.java:1426)
> 	at org.apache.hadoop.hbase.io.MapFile$Reader.createDataFileReader(MapFile.java:310)
> 	at org.apache.hadoop.hbase.io.HBaseMapFile$HBaseReader.createDataFileReader(HBaseMapFile.java:96)
> 	at org.apache.hadoop.hbase.io.MapFile$Reader.open(MapFile.java:292)
> 	at org.apache.hadoop.hbase.io.HBaseMapFile$HBaseReader.(HBaseMapFile.java:79)
> 	at org.apache.hadoop.hbase.io.BloomFilterMapFile$Reader.(BloomFilterMapFile.java:65)
> 	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

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[jira] Commented: (HBASE-1115) Regions failed compaction left in open and writable state but are not scannable

Posted by "Andrew Purtell (JIRA)" <ji...@apache.org>.
    [ https://issues.apache.org/jira/browse/HBASE-1115?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12662610#action_12662610 ] 

Andrew Purtell commented on HBASE-1115:
---------------------------------------

Yes is definitely related to HBASE-1114. But should there be rollback after failed compaction? This also happened in conjunction with HBASE-1104. 

> Regions failed compaction left in open and writable state but are not scannable
> -------------------------------------------------------------------------------
>
>                 Key: HBASE-1115
>                 URL: https://issues.apache.org/jira/browse/HBASE-1115
>             Project: Hadoop HBase
>          Issue Type: Bug
>         Environment: apurtell cluster, HBase TRUNK on hadoop 0.18 branch
>            Reporter: Andrew Purtell
>            Priority: Critical
>
> After an instance of HBASE-1114, where compaction fails, the affected region is left in an open and writable state, but scanners fail construction. Later a manual reassignment via close_region brings the region all the way back up.
> Line numbers are for 0.19-on-hadoop-0.18 branch, sorry about that. I'm upgrading to Hadoop 0.19 (finally) this afternoon. 
> org.apache.hadoop.hbase.client.RetriesExhaustedException: Trying to contact region server 10.30.94.50:60020 for region content,c84bbfc94b2143e41ba119d159be2958,1231518442461, row 'c84bbfc94b2143e41ba119d159be2958', 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:2119)
> 	at org.apache.hadoop.hbase.regionserver.HRegion$HScanner.(HRegion.java:1878)
> 	at org.apache.hadoop.hbase.regionserver.HRegion.getScanner(HRegion.java:1162)
> 	at org.apache.hadoop.hbase.regionserver.HRegionServer.openScanner(HRegionServer.java:1673)
> 	at sun.reflect.GeneratedMethodAccessor14.invoke(Unknown Source)
> 	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
> 	at java.lang.reflect.Method.invoke(Method.java:597)
> 	at org.apache.hadoop.hbase.ipc.HBaseRPC$Server.call(HBaseRPC.java:632)
> 	at org.apache.hadoop.hbase.ipc.HBaseServer$Handler.run(HBaseServer.java:894)
> Caused by: java.io.FileNotFoundException: File does not exist: hdfs://sjdc-atr-dc-1.atr.trendmicro.com:50000/data/hbase/content/1707725801/url/mapfiles/7039742044868774100/data
> 	at org.apache.hadoop.dfs.DistributedFileSystem.getFileStatus(DistributedFileSystem.java:394)
> 	at org.apache.hadoop.fs.FileSystem.getLength(FileSystem.java:695)
> 	at org.apache.hadoop.hbase.io.SequenceFile$Reader.(SequenceFile.java:1431)
> 	at org.apache.hadoop.hbase.io.SequenceFile$Reader.(SequenceFile.java:1426)
> 	at org.apache.hadoop.hbase.io.MapFile$Reader.createDataFileReader(MapFile.java:310)
> 	at org.apache.hadoop.hbase.io.HBaseMapFile$HBaseReader.createDataFileReader(HBaseMapFile.java:96)
> 	at org.apache.hadoop.hbase.io.MapFile$Reader.open(MapFile.java:292)
> 	at org.apache.hadoop.hbase.io.HBaseMapFile$HBaseReader.(HBaseMapFile.java:79)
> 	at org.apache.hadoop.hbase.io.BloomFilterMapFile$Reader.(BloomFilterMapFile.java:65)
> 	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

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