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https://issues.apache.org/jira/browse/HBASE-20921?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16556899#comment-16556899
]
Hadoop QA commented on HBASE-20921:
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| (/) *{color:green}+1 overall{color}* |
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|| Vote || Subsystem || Runtime || Comment ||
| {color:blue}0{color} | {color:blue} reexec {color} | {color:blue} 0m
23s{color} | {color:blue} Docker mode activated. {color} |
|| || || || {color:brown} Prechecks {color} ||
| {color:green}+1{color} | {color:green} hbaseanti {color} | {color:green} 0m
0s{color} | {color:green} Patch does not have any anti-patterns. {color} |
| {color:green}+1{color} | {color:green} @author {color} | {color:green} 0m
0s{color} | {color:green} The patch does not contain any @author tags. {color} |
| {color:green}+1{color} | {color:green} test4tests {color} | {color:green} 0m
0s{color} | {color:green} The patch appears to include 1 new or modified test
files. {color} |
|| || || || {color:brown} branch-2.0 Compile Tests {color} ||
| {color:green}+1{color} | {color:green} mvninstall {color} | {color:green} 3m
42s{color} | {color:green} branch-2.0 passed {color} |
| {color:green}+1{color} | {color:green} compile {color} | {color:green} 1m
44s{color} | {color:green} branch-2.0 passed {color} |
| {color:green}+1{color} | {color:green} checkstyle {color} | {color:green} 1m
1s{color} | {color:green} branch-2.0 passed {color} |
| {color:green}+1{color} | {color:green} shadedjars {color} | {color:green} 3m
52s{color} | {color:green} branch has no errors when building our shaded
downstream artifacts. {color} |
| {color:green}+1{color} | {color:green} findbugs {color} | {color:green} 1m
54s{color} | {color:green} branch-2.0 passed {color} |
| {color:green}+1{color} | {color:green} javadoc {color} | {color:green} 0m
29s{color} | {color:green} branch-2.0 passed {color} |
|| || || || {color:brown} Patch Compile Tests {color} ||
| {color:green}+1{color} | {color:green} mvninstall {color} | {color:green} 3m
28s{color} | {color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} compile {color} | {color:green} 1m
40s{color} | {color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} javac {color} | {color:green} 1m
40s{color} | {color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} checkstyle {color} | {color:green} 1m
3s{color} | {color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} whitespace {color} | {color:green} 0m
0s{color} | {color:green} The patch has no whitespace issues. {color} |
| {color:green}+1{color} | {color:green} shadedjars {color} | {color:green} 3m
52s{color} | {color:green} patch has no errors when building our shaded
downstream artifacts. {color} |
| {color:green}+1{color} | {color:green} hadoopcheck {color} | {color:green}
11m 3s{color} | {color:green} Patch does not cause any errors with Hadoop
2.6.5 2.7.4 or 3.0.0. {color} |
| {color:green}+1{color} | {color:green} findbugs {color} | {color:green} 2m
5s{color} | {color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} javadoc {color} | {color:green} 0m
29s{color} | {color:green} the patch passed {color} |
|| || || || {color:brown} Other Tests {color} ||
| {color:green}+1{color} | {color:green} unit {color} | {color:green}153m
5s{color} | {color:green} hbase-server in the patch passed. {color} |
| {color:green}+1{color} | {color:green} asflicense {color} | {color:green} 0m
25s{color} | {color:green} The patch does not generate ASF License warnings.
{color} |
| {color:black}{color} | {color:black} {color} | {color:black}190m 50s{color} |
{color:black} {color} |
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|| Subsystem || Report/Notes ||
| Docker | Client=17.05.0-ce Server=17.05.0-ce Image:yetus/hbase:6f01af0 |
| JIRA Issue | HBASE-20921 |
| JIRA Patch URL |
https://issues.apache.org/jira/secure/attachment/12933126/HBASE-20921.branch-2.0.002.patch
|
| Optional Tests | asflicense javac javadoc unit findbugs shadedjars
hadoopcheck hbaseanti checkstyle compile |
| uname | Linux 414a8905dfa7 4.4.0-130-generic #156-Ubuntu SMP Thu Jun 14
08:53:28 UTC 2018 x86_64 GNU/Linux |
| Build tool | maven |
| Personality |
/home/jenkins/jenkins-slave/workspace/PreCommit-HBASE-Build/component/dev-support/hbase-personality.sh
|
| git revision | branch-2.0 / c11f0e47a6 |
| maven | version: Apache Maven 3.5.4
(1edded0938998edf8bf061f1ceb3cfdeccf443fe; 2018-06-17T18:33:14Z) |
| Default Java | 1.8.0_171 |
| findbugs | v3.1.0-RC3 |
| Test Results |
https://builds.apache.org/job/PreCommit-HBASE-Build/13800/testReport/ |
| Max. process+thread count | 3989 (vs. ulimit of 10000) |
| modules | C: hbase-server U: hbase-server |
| Console output |
https://builds.apache.org/job/PreCommit-HBASE-Build/13800/console |
| Powered by | Apache Yetus 0.7.0 http://yetus.apache.org |
This message was automatically generated.
> Possible NPE in ReopenTableRegionsProcedure
> -------------------------------------------
>
> Key: HBASE-20921
> URL: https://issues.apache.org/jira/browse/HBASE-20921
> Project: HBase
> Issue Type: Sub-task
> Components: amv2
> Affects Versions: 3.0.0, 2.1.0, 2.0.2
> Reporter: Allan Yang
> Assignee: Allan Yang
> Priority: Major
> Attachments: HBASE-20921.branch-2.0.001.patch,
> HBASE-20921.branch-2.0.002.patch
>
>
> After HBASE-20752， we issue a ReopenTableRegionsProcedure in
> ModifyTableProcedure to ensure all regions are reopened.
> But, ModifyTableProcedure and ReopenTableRegionsProcedure do not hold the
> lock (why?), so there is a chance that while ModifyTableProcedure executing,
> a merge/split procedure can be executed at the same time.
> So, when ReopenTableRegionsProcedure reaches the state of
> "REOPEN_TABLE_REGIONS_CONFIRM_REOPENED", some of the persisted regions to
> check is actually not exists, thus a NPE will throw.
> {code}
> 2018-07-18 01:38:57,528 INFO [PEWorker-9]
> procedure2.ProcedureExecutor(1246): Finished pid=6110, state=SUCCESS;
> MergeTableRegionsProcedure table=IntegrationTestBigLinkedList,
> regions=[845d286231eb01b7
> 1aeaa17b0e30058d, 4a46ab0918c99cada72d5336ad83a828], forcibly=false in
> 10.8610sec
> 2018-07-18 01:38:57,530 ERROR [PEWorker-8]
> procedure2.ProcedureExecutor(1478): CODE-BUG: Uncaught runtime exception:
> pid=5974, ppid=5973, state=RUNNABLE:REOPEN_TABLE_REGIONS_CONFIRM_REOPENED;
> ReopenTab
> leRegionsProcedure table=IntegrationTestBigLinkedList
> java.lang.NullPointerException
> at
> org.apache.hadoop.hbase.master.assignment.RegionStates.checkReopened(RegionStates.java:651)
> at
> java.util.stream.ReferencePipeline$3$1.accept(ReferencePipeline.java:193)
> at
> java.util.ArrayList$ArrayListSpliterator.forEachRemaining(ArrayList.java:1382)
> at
> java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:481)
> at
> java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:471)
> at
> java.util.stream.ReduceOps$ReduceOp.evaluateSequential(ReduceOps.java:708)
> at
> java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234)
> at
> java.util.stream.ReferencePipeline.collect(ReferencePipeline.java:499)
> at
> org.apache.hadoop.hbase.master.procedure.ReopenTableRegionsProcedure.executeFromState(ReopenTableRegionsProcedure.java:102)
> at
> org.apache.hadoop.hbase.master.procedure.ReopenTableRegionsProcedure.executeFromState(ReopenTableRegionsProcedure.java:45)
> at
> org.apache.hadoop.hbase.procedure2.StateMachineProcedure.execute(StateMachineProcedure.java:184)
> at
> org.apache.hadoop.hbase.procedure2.Procedure.doExecute(Procedure.java:850)
> at
> org.apache.hadoop.hbase.procedure2.ProcedureExecutor.execProcedure(ProcedureExecutor.java:1453)
> at
> org.apache.hadoop.hbase.procedure2.ProcedureExecutor.executeProcedure(ProcedureExecutor.java:1221)
> at
> org.apache.hadoop.hbase.procedure2.ProcedureExecutor.access$800(ProcedureExecutor.java:75)
> at
> org.apache.hadoop.hbase.procedure2.ProcedureExecutor$WorkerThread.run(ProcedureExecutor.java:1741)
> {code}
> I think we need to renew the region list of the table at the
> "REOPEN_TABLE_REGIONS_CONFIRM_REOPENED" state. For the regions which are
> merged or split, we do not need to check it. Since we can be sure that they
> are opened after we made change to table descriptor.
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