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https://issues.apache.org/jira/browse/HBASE-12255?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Mike Drob resolved HBASE-12255.
-------------------------------
Resolution: Cannot Reproduce
Not enough info here to go off of on an EOL version of HBase. Cannot Reproduce.
> NPE in OpenRegionHandler after restart hdfs without stop hbase
> --------------------------------------------------------------
>
> Key: HBASE-12255
> URL: https://issues.apache.org/jira/browse/HBASE-12255
> Project: HBase
> Issue Type: Bug
> Environment: hadoop-2.5.1
> hbase-0.98
> phonenix-4.1.0
> Reporter: Junyong Li
>
> I have a phoenix table 'EVENT', and the table have a index 'IDX_DATE_HOUR_X'.
> I restarted hdfs without stop hbase, after then, the hbase table cann't be
> scaned.
> I try to restart hbase, the all hbase table still cann't be scaned.
> the regionserver log have many exception like this:
> 2014-10-13 19:33:05,287 INFO
> [A01101303447-V1,60020,1413199890407-recovery-writer--pool4-t3]
> client.AsyncProcess: #4, waiting for some tasks to finish. Expected max=0,
> tasksSent=9, tasksDone=8, currentTasksDone=8, retries=8 hasError=fal
> se, tableName=IDX_DATE_HOUR_X
> 2014-10-13 19:33:05,298 INFO
> [A01101303447-V1,60020,1413199890407-recovery-writer--pool4-t2]
> client.AsyncProcess: #5, waiting for some tasks to finish. Expected max=0,
> tasksSent=9, tasksDone=8, currentTasksDone=8, retries=8 hasError=fal
> se, tableName=IDX_DATE_HOUR_X
> 2014-10-13 19:33:05,311 INFO
> [A01101303447-V1,60020,1413199890407-recovery-writer--pool4-t1]
> client.AsyncProcess: #6, waiting for some tasks to finish. Expected max=0,
> tasksSent=9, tasksDone=8, currentTasksDone=8, retries=8 hasError=fal
> se, tableName=IDX_DATE_HOUR_X
> 2014-10-13 19:33:06,452 INFO [ReplicationExecutor-0]
> replication.ReplicationQueuesZKImpl: Moving
> A01101303447-V1,60020,1413199414409's hlogs to my queue
> 2014-10-13 19:33:15,325 INFO
> [A01101303447-V1,60020,1413199890407-recovery-writer--pool4-t1]
> client.AsyncProcess: #6, waiting for some tasks to finish. Expected max=0,
> tasksSent=10, tasksDone=9, currentTasksDone=9, retries=9 hasError=fa
> lse, tableName=IDX_DATE_HOUR_X
> 2014-10-13 19:33:15,333 INFO [htable-pool6-t2] client.AsyncProcess: #6,
> table=IDX_DATE_HOUR_X, attempt=10/350 failed 12 ops, last exception:
> org.apache.hadoop.hbase.exceptions.RegionOpeningException:
> org.apache.hadoop.hbase.exceptions.R
> egionOpeningException: Region
> IDX_DATE_HOUR_X,t\x00\x00\x00\x00\x00,1413186874829.9a92abb84768b129df3faedb877f7bea.
> is opening on A01101303447-V1,60020,1413199890407
> at
> org.apache.hadoop.hbase.regionserver.HRegionServer.getRegionByEncodedName(HRegionServer.java:2759)
> at
> org.apache.hadoop.hbase.regionserver.HRegionServer.getRegion(HRegionServer.java:4213)
> at
> org.apache.hadoop.hbase.regionserver.HRegionServer.multi(HRegionServer.java:3437)
> at
> org.apache.hadoop.hbase.protobuf.generated.ClientProtos$ClientService$2.callBlockingMethod(ClientProtos.java:29593)
> at org.apache.hadoop.hbase.ipc.RpcServer.call(RpcServer.java:2027)
> at org.apache.hadoop.hbase.ipc.CallRunner.run(CallRunner.java:108)
> at
> org.apache.hadoop.hbase.ipc.RpcExecutor.consumerLoop(RpcExecutor.java:114)
> at org.apache.hadoop.hbase.ipc.RpcExecutor$1.run(RpcExecutor.java:94)
> at java.lang.Thread.run(Thread.java:744)
> -------------------------------
> After two days's try, i found that:
> If idisable 'EVENT', other tables can be scanned, then i enable 'EVENT'
> manually, the region log show that NullPointExceptin has occur then replaying
> WAL, the following is log:
> 2014-10-13 19:25:21,043 INFO [RS_OPEN_REGION-A01101303447-V1:60020-1]
> regionserver.HRegion: Replaying edits from
> hdfs://localhost/hbase-0.98/data/default/EVENT/def4a581d4ad963cbb8cad32cbfbab2e/recovered.edits/0000000000000000002
> 2014-10-13 19:25:21,048 INFO
> [A01101303447-V1,60020,1413199414409-recovery-writer--pool17-t2-SendThread(localhost:2182)]
> zookeeper.ClientCnxn: Opening socket connection to server
> localhost/0:0:0:0:0:0:0:1:2182. Will not attempt to authe
> nticate using SASL (unknown error)
> 2014-10-13 19:25:21,049 INFO
> [A01101303447-V1,60020,1413199414409-recovery-writer--pool17-t2-SendThread(localhost:2182)]
> zookeeper.ClientCnxn: Socket connection established to
> localhost/0:0:0:0:0:0:0:1:2182, initiating session
> 2014-10-13 19:25:21,051 INFO
> [A01101303447-V1,60020,1413199414409-recovery-writer--pool17-t3]
> zookeeper.RecoverableZooKeeper: Process identifier=hconnection-0x199c8484
> connecting to ZooKeeper ensemble=localhost:2182
> 2014-10-13 19:25:21,051 INFO
> [A01101303447-V1,60020,1413199414409-recovery-writer--pool17-t3]
> zookeeper.ZooKeeper: Initiating client connection,
> connectString=localhost:2182 sessionTimeout=90000
> watcher=hconnection-0x199c8484, quorum=lo
> calhost:2182, baseZNode=/hbase
> 2014-10-13 19:25:21,052 INFO
> [A01101303447-V1,60020,1413199414409-recovery-writer--pool17-t3-SendThread(localhost:2182)]
> zookeeper.ClientCnxn: Opening socket connection to server
> localhost/0:0:0:0:0:0:0:1:2182. Will not attempt to authe
> nticate using SASL (unknown error)
> 2014-10-13 19:25:21,052 INFO
> [A01101303447-V1,60020,1413199414409-recovery-writer--pool17-t3-SendThread(localhost:2182)]
> zookeeper.ClientCnxn: Socket connection established to
> localhost/0:0:0:0:0:0:0:1:2182, initiating session
> 2014-10-13 19:25:21,053 INFO
> [A01101303447-V1,60020,1413199414409-recovery-writer--pool17-t2-SendThread(localhost:2182)]
> zookeeper.ClientCnxn: Session establishment complete on server
> localhost/0:0:0:0:0:0:0:1:2182, sessionid = 0x149093
> fc1c80203, negotiated timeout = 90000
> 2014-10-13 19:25:21,055 INFO
> [A01101303447-V1,60020,1413199414409-recovery-writer--pool17-t3-SendThread(localhost:2182)]
> zookeeper.ClientCnxn: Session establishment complete on server
> localhost/0:0:0:0:0:0:0:1:2182, sessionid = 0x149093
> fc1c80204, negotiated timeout = 90000
> 2014-10-13 19:25:21,103 ERROR [RS_OPEN_REGION-A01101303447-V1:60020-1]
> handler.OpenRegionHandler: Failed open of
> region=EVENT,\x18,1413186838852.def4a581d4ad963cbb8cad32cbfbab2e., starting
> to roll back the global memstore size.
> java.lang.NullPointerException
> 2014-10-13 19:25:21,104 INFO [RS_OPEN_REGION-A01101303447-V1:60020-1]
> handler.OpenRegionHandler: Opening of region {ENCODED =>
> def4a581d4ad963cbb8cad32cbfbab2e, NAME =>
> 'EVENT,\x18,1413186838852.def4a581d4ad963cbb8cad32cbfbab2e.', START
> KEY => '\x18', ENDKEY => '\x19'} failed, transitioning from OPENING to
> FAILED_OPEN in ZK, expecting version 28
> 2014-10-13 19:25:21,104 DEBUG [RS_OPEN_REGION-A01101303447-V1:60020-1]
> zookeeper.ZKAssign: regionserver:60020-0x149093fc1c80001,
> quorum=localhost:2182, baseZNode=/hbase Transitioning
> def4a581d4ad963cbb8cad32cbfbab2e from RS_ZK_REGION_OPE
> NING to RS_ZK_REGION_FAILED_OPEN
> 2014-10-13 19:25:21,107 DEBUG [RS_OPEN_REGION-A01101303447-V1:60020-1]
> zookeeper.ZKAssign: regionserver:60020-0x149093fc1c80001,
> quorum=localhost:2182, baseZNode=/hbase Transitioned node
> def4a581d4ad963cbb8cad32cbfbab2e from RS_ZK_REGION
> _OPENING to RS_ZK_REGION_FAILED_OPEN
> 2014-10-13 19:25:21,108 ERROR [RS_OPEN_REGION-A01101303447-V1:60020-2]
> handler.OpenRegionHandler: Failed open of
> region=EVENT,\x15,1413186838852.4592fbc9db5e6eb05c812dcd81f5fa4d., starting
> to roll back the global memstore size.
> java.lang.NullPointerException
> 2014-10-13 19:25:21,108 INFO [RS_OPEN_REGION-A01101303447-V1:60020-2]
> handler.OpenRegionHandler: Opening of region {ENCODED =>
> 4592fbc9db5e6eb05c812dcd81f5fa4d, NAME =>
> 'EVENT,\x15,1413186838852.4592fbc9db5e6eb05c812dcd81f5fa4d.', START
> KEY => '\x15', ENDKEY => '\x16'} failed, transitioning from OPENING to
> FAILED_OPEN in ZK, expecting version 28
> 2014-10-13 19:25:21,108 DEBUG [RS_OPEN_REGION-A01101303447-V1:60020-2]
> zookeeper.ZKAssign: regionserver:60020-0x149093fc1c80001,
> quorum=localhost:2182, baseZNode=/hbase Transitioning
> 4592fbc9db5e6eb05c812dcd81f5fa4d from RS_ZK_REGION_OPE
> NING to RS_ZK_REGION_FAILED_OPEN
> 2014-10-13 19:25:21,111 DEBUG [RS_OPEN_REGION-A01101303447-V1:60020-2]
> zookeeper.ZKAssign: regionserver:60020-0x149093fc1c80001,
> quorum=localhost:2182, baseZNode=/hbase Transitioned node
> 4592fbc9db5e6eb05c812dcd81f5fa4d from RS_ZK_REGION
> _OPENING to RS_ZK_REGION_FAILED_OPEN
> 2014-10-13 19:25:21,113 ERROR [RS_OPEN_REGION-A01101303447-V1:60020-0]
> handler.OpenRegionHandler: Failed open of
> region=EVENT,\x1B,1413186838852.b45c35d23b23fda5643ec5d79083488e., starting
> to roll back the global memstore size.
> java.lang.NullPointerException
> After deleteing the 'recovered.edits' in the 'EVENT' table's region, the
> hbase table can be scanned. so i think the reason maybe that:
> after restart hbase, the regionserver begin opening the region and replaying
> WAL, when replaying the EVENT's WAL, because EVENT has a index table
> IDX_DATE_HOUR_X, so the replay process should operate IDX_DATE_HOUR_X, but at
> this moment, the IDX_DATE_HOUR_X table's region is in OPENING stats, it is't
> unavaiabled, so the EVENT replaying process Time and time again to retry and
> throw Exception aging and again.
> if I disable EVENT first, others hbase table recory successfully, but when i
> enable EVENT, the region log occur java.lang.NullPointerException, this make
> the region transition to OPEN_FAILED.
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