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https://issues.apache.org/jira/browse/HBASE-3298?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12965997#action_12965997
]
stack commented on HBASE-3298:
------------------------------
bq. yeah I might have been too hasty on the regionPlans stuff, that needs a bit
more work.
I think the am.txt patch should be enough.
bq. Looking in the split transaction code, during the close() we will end up
with a null list of store files and we'll abort the split transaction at that
point
Abort of a split will cause reopen of the parent region. You probably don't
want that? (Split rollback tries to restore the pre-split condition).
> Regionserver can close during a split causing double assignment
> ---------------------------------------------------------------
>
> Key: HBASE-3298
> URL: https://issues.apache.org/jira/browse/HBASE-3298
> Project: HBase
> Issue Type: Bug
> Reporter: ryan rawson
> Assignee: ryan rawson
> Priority: Blocker
> Fix For: 0.90.0
>
> Attachments: am.txt, am.txt, HBASE-3298.txt
>
>
> A regionserver got a close message during a split, which seemed to cause the
> split to fail, and also caused a double assignment and orphaned region.
> The log:
> 2010-11-30 18:29:24,310 INFO org.apache.hadoop.hbase.regionserver.HRegion:
> completed compaction on region
> usertable,user877196232,1291170014467.6e260cb69fda466a97f650debd5f0
> f01. after 40sec
> 2010-11-30 18:29:24,310 INFO
> org.apache.hadoop.hbase.regionserver.SplitTransaction: Starting split of
> region usertable,user877196232,1291170014467.6e260cb69fda466a97f650debd
> 5f0f01.
> 2010-11-30 18:29:24,312 DEBUG org.apache.hadoop.hbase.regionserver.HRegion:
> Closing
> usertable,user877196232,1291170014467.6e260cb69fda466a97f650debd5f0f01.:
> disabling compac
> tions & flushes
> 2010-11-30 18:29:24,312 INFO org.apache.hadoop.hbase.regionserver.HRegion:
> Running close preflush of
> usertable,user877196232,1291170014467.6e260cb69fda466a97f650debd5f0f01.
> 2010-11-30 18:29:24,312 DEBUG org.apache.hadoop.hbase.regionserver.HRegion:
> Started memstore flush for
> usertable,user877196232,1291170014467.6e260cb69fda466a97f650debd5f0f01
> ., current region memstore size 256.1m
> 2010-11-30 18:29:24,312 DEBUG org.apache.hadoop.hbase.regionserver.HRegion:
> Finished snapshotting, commencing flushing stores
> 2010-11-30 18:29:24,700 DEBUG org.apache.hadoop.hbase.regionserver.HRegion:
> NOT flushing memstore for region
> usertable,user877196232,1291170014467.6e260cb69fda466a97f650debd
> 5f0f01., flushing=false, writesEnabled=false
> 2010-11-30 18:29:27,291 DEBUG org.apache.hadoop.hbase.regionserver.HRegion:
> Flush requested on
> usertable,user877196232,1291170014467.6e260cb69fda466a97f650debd5f0f01.
> 2010-11-30 18:29:27,291 DEBUG org.apache.hadoop.hbase.regionserver.HRegion:
> NOT flushing memstore for region
> usertable,user877196232,1291170014467.6e260cb69fda466a97f650debd
> 5f0f01., flushing=false, writesEnabled=false
> 2010-11-30 18:29:27,961 INFO org.apache.hadoop.hbase.regionserver.Store:
> Renaming flushed file at
> hdfs://sv4borg235:9000/hbase-rc1/usertable/6e260cb69fda466a97f650debd5f0f01
> /.tmp/1673662210031989562 to
> hdfs://sv4borg235:9000/hbase-rc1/usertable/6e260cb69fda466a97f650debd5f0f01/data/1156800948892817282
> 2010-11-30 18:29:27,966 INFO org.apache.hadoop.hbase.regionserver.Store:
> Added
> hdfs://sv4borg235:9000/hbase-rc1/usertable/6e260cb69fda466a97f650debd5f0f01/data/1156800948892
> 817282, entries=1157300, sequenceid=14819, memsize=256.1m, filesize=59.4m
> 2010-11-30 18:29:27,966 INFO org.apache.hadoop.hbase.regionserver.HRegion:
> Unblocking updates for region
> usertable,user877196232,1291170014467.6e260cb69fda466a97f650debd5f0f
> 01. 'IPC Server handler 1 on 60020'
> 2010-11-30 18:29:27,966 INFO org.apache.hadoop.hbase.regionserver.HRegion:
> Unblocking updates for region
> usertable,user877196232,1291170014467.6e260cb69fda466a97f650debd5f0f01. 'IPC
> Server handler 0 on 60020'
> 2010-11-30 18:29:27,967 INFO org.apache.hadoop.hbase.regionserver.HRegion:
> Unblocking updates for region
> usertable,user877196232,1291170014467.6e260cb69fda466a97f650debd5f0f01. 'IPC
> Server handler 9 on 60020'
> 2010-11-30 18:29:27,967 INFO org.apache.hadoop.hbase.regionserver.HRegion:
> Unblocking updates for region
> usertable,user877196232,1291170014467.6e260cb69fda466a97f650debd5f0f01. 'IPC
> Server handler 4 on 60020'
> 2010-11-30 18:29:27,967 INFO org.apache.hadoop.hbase.regionserver.HRegion:
> Unblocking updates for region
> usertable,user877196232,1291170014467.6e260cb69fda466a97f650debd5f0f01. 'IPC
> Server handler 8 on 60020'
> 2010-11-30 18:29:27,967 INFO org.apache.hadoop.hbase.regionserver.HRegion:
> Unblocking updates for region
> usertable,user877196232,1291170014467.6e260cb69fda466a97f650debd5f0f01. 'IPC
> Server handler 5 on 60020'
> 2010-11-30 18:29:27,966 INFO org.apache.hadoop.hbase.regionserver.HRegion:
> Unblocking updates for region
> usertable,user877196232,1291170014467.6e260cb69fda466a97f650debd5f0f01. 'IPC
> Server handler 6 on 60020'
> 2010-11-30 18:29:27,966 INFO org.apache.hadoop.hbase.regionserver.HRegion:
> Finished memstore flush of ~256.1m for region
> usertable,user877196232,1291170014467.6e260cb69fda466a97f650debd5f0f01. in
> 3654ms, sequenceid=14819, compaction requested=true
> 2010-11-30 18:29:27,967 INFO org.apache.hadoop.hbase.regionserver.HRegion:
> Unblocking updates for region
> usertable,user877196232,1291170014467.6e260cb69fda466a97f650debd5f0f01. 'IPC
> Server handler 7 on 60020'
> 2010-11-30 18:29:27,967 INFO org.apache.hadoop.hbase.regionserver.HRegion:
> Unblocking updates for region
> usertable,user877196232,1291170014467.6e260cb69fda466a97f650debd5f0f01. 'IPC
> Server handler 3 on 60020'
> 2010-11-30 18:29:27,967 INFO org.apache.hadoop.hbase.regionserver.HRegion:
> Unblocking updates for region
> usertable,user877196232,1291170014467.6e260cb69fda466a97f650debd5f0f01. 'IPC
> Server handler 2 on 60020'
> 2010-11-30 18:29:28,005 INFO
> org.apache.hadoop.hbase.regionserver.HRegionServer: Received close region:
> usertable,user877196232,1291170014467.6e260cb69fda466a97f650debd5f0f01.
> 2010-11-30 18:29:28,011 DEBUG
> org.apache.hadoop.hbase.regionserver.handler.CloseRegionHandler: Processing
> close of
> usertable,user877196232,1291170014467.6e260cb69fda466a97f650debd5f0f01.
> 2010-11-30 18:29:28,012 DEBUG org.apache.hadoop.hbase.zookeeper.ZKAssign:
> regionserver:60020-0x2c765e0da906eb Creating unassigned node for
> 6e260cb69fda466a97f650debd5f0f01 in a CLOSING state
> 2010-11-30 18:29:28,074 DEBUG org.apache.hadoop.hbase.regionserver.HRegion:
> Updates disabled for region
> usertable,user877196232,1291170014467.6e260cb69fda466a97f650debd5f0f01.
> 2010-11-30 18:29:28,074 DEBUG org.apache.hadoop.hbase.regionserver.HRegion:
> Started memstore flush for
> usertable,user877196232,1291170014467.6e260cb69fda466a97f650debd5f0f01.,
> current region memstore size 4.8m
> 2010-11-30 18:29:28,074 DEBUG org.apache.hadoop.hbase.regionserver.HRegion:
> Finished snapshotting, commencing flushing stores
> 2010-11-30 18:29:28,079 DEBUG org.apache.hadoop.hbase.regionserver.HRegion:
> Closing
> usertable,user877196232,1291170014467.6e260cb69fda466a97f650debd5f0f01.:
> disabling compactions & flushes
> 2010-11-30 18:29:28,332 INFO org.apache.hadoop.hbase.regionserver.Store:
> Renaming flushed file at
> hdfs://sv4borg235:9000/hbase-rc1/usertable/6e260cb69fda466a97f650debd5f0f01/.tmp/1412284505922212951
> to
> hdfs://sv4borg235:9000/hbase-rc1/usertable/6e260cb69fda466a97f650debd5f0f01/data/3835216797592840515
> 2010-11-30 18:29:28,345 INFO org.apache.hadoop.hbase.regionserver.Store:
> Added
> hdfs://sv4borg235:9000/hbase-rc1/usertable/6e260cb69fda466a97f650debd5f0f01/data/3835216797592840515,
> entries=21600, sequenceid=14835, memsize=4.8m, filesize=1.1m
> 2010-11-30 18:29:28,365 INFO org.apache.hadoop.hbase.regionserver.HRegion:
> Finished memstore flush of ~4.8m for region
> usertable,user877196232,1291170014467.6e260cb69fda466a97f650debd5f0f01. in
> 291ms, sequenceid=14835, compaction requested=true
> 2010-11-30 18:29:28,381 DEBUG org.apache.hadoop.hbase.regionserver.Store:
> closed data
> 2010-11-30 18:29:28,381 INFO org.apache.hadoop.hbase.regionserver.HRegion:
> Closed usertable,user877196232,1291170014467.6e260cb69fda466a97f650debd5f0f01.
> 2010-11-30 18:29:28,382 DEBUG org.apache.hadoop.hbase.zookeeper.ZKAssign:
> regionserver:60020-0x2c765e0da906eb Attempting to transition node
> 6e260cb69fda466a97f650debd5f0f01 from RS_ZK_REGION_CLOSING to
> RS_ZK_REGION_CLOSED
> 2010-11-30 18:29:28,466 DEBUG org.apache.hadoop.hbase.zookeeper.ZKAssign:
> regionserver:60020-0x2c765e0da906eb Successfully transitioned node
> 6e260cb69fda466a97f650debd5f0f01 from RS_ZK_REGION_CLOSING to
> RS_ZK_REGION_CLOSED
> 2010-11-30 18:29:28,466 DEBUG
> org.apache.hadoop.hbase.regionserver.handler.CloseRegionHandler: Closed
> region usertable,user877196232,1291170014467.6e260cb69fda466a97f650debd5f0f01.
> 2010-11-30 18:29:29,000 INFO
> org.apache.hadoop.hbase.regionserver.HRegionServer: Received close region:
> usertable,user1476676931,1291170472014.829c72aa4c47a31bd71b735da7e33883.
> 2010-11-30 18:29:29,001 DEBUG
> org.apache.hadoop.hbase.regionserver.handler.CloseRegionHandler: Processing
> close of
> usertable,user1476676931,1291170472014.829c72aa4c47a31bd71b735da7e33883.
> 2010-11-30 18:29:29,013 DEBUG org.apache.hadoop.hbase.zookeeper.ZKAssign:
> regionserver:60020-0x2c765e0da906eb Creating unassigned node for
> 829c72aa4c47a31bd71b735da7e33883 in a CLOSING state
> 2010-11-30 18:29:29,079 INFO
> org.apache.hadoop.hbase.regionserver.CompactSplitThread: Running rollback of
> failed split of
> usertable,user877196232,1291170014467.6e260cb69fda466a97f650debd5f0f01.;
> org.apache.hadoop.hdfs.server.namenode.LeaseExpiredException: No lease on
> /hbase-rc1/usertable/6e260cb69fda466a97f650debd5f0f01/splits/019cf676872050ee05c15a6a37655e8a/data/5976204784865149447.6e260cb69fda466a97f650debd5f0f01
> File does not exist. [Lease. Holder:
> DFSClient_hb_rs_sv4borg226,60020,1291168733786_1291168755622, pendingcreates:
> 1]
> at
> org.apache.hadoop.hdfs.server.namenode.FSNamesystem.checkLease(FSNamesystem.java:1378)
> at
> org.apache.hadoop.hdfs.server.namenode.FSNamesystem.checkLease(FSNamesystem.java:1369)
> at
> org.apache.hadoop.hdfs.server.namenode.FSNamesystem.completeFileInternal(FSNamesystem.java:1424)
> at
> org.apache.hadoop.hdfs.server.namenode.FSNamesystem.completeFile(FSNamesystem.java:1412)
> at
> org.apache.hadoop.hdfs.server.namenode.NameNode.complete(NameNode.java:491)
> 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.ipc.RPC$Server.call(RPC.java:512)
> at org.apache.hadoop.ipc.Server$Handler$1.run(Server.java:968)
> at org.apache.hadoop.ipc.Server$Handler$1.run(Server.java:964)
> at java.security.AccessController.doPrivileged(Native Method)
> at javax.security.auth.Subject.doAs(Subject.java:396)
> at org.apache.hadoop.ipc.Server$Handler.run(Server.java:962)
> 2010-11-30 18:29:29,107 DEBUG org.apache.hadoop.hbase.regionserver.HRegion:
> Closing
> usertable,user1476676931,1291170472014.829c72aa4c47a31bd71b735da7e33883.:
> disabling compactions & flushes
> 2010-11-30 18:29:29,107 INFO org.apache.hadoop.hbase.regionserver.HRegion:
> Running close preflush of
> usertable,user1476676931,1291170472014.829c72aa4c47a31bd71b735da7e33883.
> 2010-11-30 18:29:29,108 DEBUG org.apache.hadoop.hbase.regionserver.HRegion:
> Started memstore flush for
> usertable,user1476676931,1291170472014.829c72aa4c47a31bd71b735da7e33883.,
> current region memstore size 63.4m
> 2010-11-30 18:29:29,108 DEBUG org.apache.hadoop.hbase.regionserver.HRegion:
> Finished snapshotting, commencing flushing stores
> 2010-11-30 18:29:29,118 DEBUG org.apache.hadoop.hbase.regionserver.Store:
> loaded
> hdfs://sv4borg235:9000/hbase-rc1/usertable/6e260cb69fda466a97f650debd5f0f01/data/1156800948892817282,
> isReference=false, isBulkLoadResult=false, seqid=14819, majorCompaction=false
> 2010-11-30 18:29:29,163 DEBUG org.apache.hadoop.hbase.regionserver.Store:
> loaded
> hdfs://sv4borg235:9000/hbase-rc1/usertable/6e260cb69fda466a97f650debd5f0f01/data/1485319185163827758,
> isReference=false, isBulkLoadResult=false, seqid=12873, majorCompaction=false
> 2010-11-30 18:29:29,179 DEBUG org.apache.hadoop.hbase.regionserver.Store:
> loaded
> hdfs://sv4borg235:9000/hbase-rc1/usertable/6e260cb69fda466a97f650debd5f0f01/data/2866498733799966821,
> isReference=false, isBulkLoadResult=false, seqid=12619, majorCompaction=false
> 2010-11-30 18:29:29,219 DEBUG org.apache.hadoop.hbase.regionserver.Store:
> loaded
> hdfs://sv4borg235:9000/hbase-rc1/usertable/6e260cb69fda466a97f650debd5f0f01/data/3835216797592840515,
> isReference=false, isBulkLoadResult=false, seqid=14835, majorCompaction=false
> 2010-11-30 18:29:29,237 DEBUG org.apache.hadoop.hbase.regionserver.Store:
> loaded
> hdfs://sv4borg235:9000/hbase-rc1/usertable/6e260cb69fda466a97f650debd5f0f01/data/444462617223715350,
> isReference=false, isBulkLoadResult=false, seqid=12005, majorCompaction=false
> 2010-11-30 18:29:29,247 DEBUG org.apache.hadoop.hbase.regionserver.Store:
> loaded
> hdfs://sv4borg235:9000/hbase-rc1/usertable/6e260cb69fda466a97f650debd5f0f01/data/5536858845826091476,
> isReference=false, isBulkLoadResult=false, seqid=13173, majorCompaction=false
> 2010-11-30 18:29:29,254 DEBUG org.apache.hadoop.hbase.regionserver.Store:
> loaded
> hdfs://sv4borg235:9000/hbase-rc1/usertable/6e260cb69fda466a97f650debd5f0f01/data/5976204784865149447,
> isReference=false, isBulkLoadResult=false, seqid=13427, majorCompaction=false
> 2010-11-30 18:29:29,275 DEBUG org.apache.hadoop.hbase.regionserver.Store:
> loaded
> hdfs://sv4borg235:9000/hbase-rc1/usertable/6e260cb69fda466a97f650debd5f0f01/data/8614929289191582955,
> isReference=false, isBulkLoadResult=false, seqid=6111, majorCompaction=false
> 2010-11-30 18:29:29,281 DEBUG org.apache.hadoop.hbase.regionserver.Store:
> loaded
> hdfs://sv4borg235:9000/hbase-rc1/usertable/6e260cb69fda466a97f650debd5f0f01/data/9150811729171627958,
> isReference=false, isBulkLoadResult=false, seqid=12265, majorCompaction=false
> 2010-11-30 18:29:29,283 INFO org.apache.hadoop.hbase.regionserver.HRegion:
> Onlined
> usertable,user877196232,1291170014467.6e260cb69fda466a97f650debd5f0f01.; next
> sequenceid=14836
> 2010-11-30 18:29:29,284 INFO
> org.apache.hadoop.hbase.regionserver.CompactSplitThread: Successful rollback
> of failed split of usertable,user877196232,1291170014467.6e260cb69f
> da466a97f650debd5f0f01.
> 2010-11-30 18:29:29,284 INFO org.apache.hadoop.hbase.regionserver.HRegion:
> NOT compacting region
> usertable,user877196232,1291170014467.6e260cb69fda466a97f650debd5f0f01.:
> compacting=false, writesEnabled=false
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