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Hadoop QA commented on HBASE-21565: ----------------------------------- | (x) *{color:red}-1 overall{color}* | \\ \\ || Vote || Subsystem || Runtime || Comment || | {color:blue}0{color} | {color:blue} reexec {color} | {color:blue} 0m 10s{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 3 new or modified test files. {color} | || || || || {color:brown} master Compile Tests {color} || | {color:green}+1{color} | {color:green} mvninstall {color} | {color:green} 4m 0s{color} | {color:green} master passed {color} | | {color:green}+1{color} | {color:green} compile {color} | {color:green} 1m 49s{color} | {color:green} master passed {color} | | {color:green}+1{color} | {color:green} checkstyle {color} | {color:green} 1m 10s{color} | {color:green} master passed {color} | | {color:green}+1{color} | {color:green} shadedjars {color} | {color:green} 3m 49s{color} | {color:green} branch has no errors when building our shaded downstream artifacts. {color} | | {color:green}+1{color} | {color:green} findbugs {color} | {color:green} 2m 0s{color} | {color:green} master passed {color} | | {color:green}+1{color} | {color:green} javadoc {color} | {color:green} 0m 29s{color} | {color:green} master passed {color} | || || || || {color:brown} Patch Compile Tests {color} || | {color:green}+1{color} | {color:green} mvninstall {color} | {color:green} 4m 2s{color} | {color:green} the patch passed {color} | | {color:green}+1{color} | {color:green} compile {color} | {color:green} 1m 47s{color} | {color:green} the patch passed {color} | | {color:green}+1{color} | {color:green} javac {color} | {color:green} 1m 47s{color} | {color:green} the patch passed {color} | | {color:red}-1{color} | {color:red} checkstyle {color} | {color:red} 1m 10s{color} | {color:red} hbase-server: The patch generated 5 new + 255 unchanged - 0 fixed = 260 total (was 255) {color} | | {color:red}-1{color} | {color:red} whitespace {color} | {color:red} 0m 0s{color} | {color:red} The patch has 1 line(s) that end in whitespace. Use git apply --whitespace=fix <<patch_file>>. Refer https://git-scm.com/docs/git-apply {color} | | {color:green}+1{color} | {color:green} shadedjars {color} | {color:green} 3m 47s{color} | {color:green} patch has no errors when building our shaded downstream artifacts. {color} | | {color:green}+1{color} | {color:green} hadoopcheck {color} | {color:green} 8m 20s{color} | {color:green} Patch does not cause any errors with Hadoop 2.7.4 or 3.0.0. {color} | | {color:green}+1{color} | {color:green} findbugs {color} | {color:green} 2m 12s{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:red}-1{color} | {color:red} unit {color} | {color:red}123m 33s{color} | {color:red} hbase-server in the patch failed. {color} | | {color:green}+1{color} | {color:green} asflicense {color} | {color:green} 0m 19s{color} | {color:green} The patch does not generate ASF License warnings. {color} | | {color:black}{color} | {color:black} {color} | {color:black}159m 47s{color} | {color:black} {color} | \\ \\ || Reason || Tests || | Failed junit tests | hadoop.hbase.replication.TestSyncReplicationStandbyKillRS | \\ \\ || Subsystem || Report/Notes || | Docker | Client=17.05.0-ce Server=17.05.0-ce Image:yetus/hbase:b002b0b | | JIRA Issue | HBASE-21565 | | JIRA Patch URL | https://issues.apache.org/jira/secure/attachment/12951601/HBASE-21565.master.005.patch | | Optional Tests | dupname asflicense javac javadoc unit findbugs shadedjars hadoopcheck hbaseanti checkstyle compile | | uname | Linux a24e8a507c39 4.4.0-138-generic #164-Ubuntu SMP Tue Oct 2 17:16:02 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 | master / f32d261843 | | maven | version: Apache Maven 3.5.4 (1edded0938998edf8bf061f1ceb3cfdeccf443fe; 2018-06-17T18:33:14Z) | | Default Java | 1.8.0_181 | | findbugs | v3.1.0-RC3 | | checkstyle | https://builds.apache.org/job/PreCommit-HBASE-Build/15268/artifact/patchprocess/diff-checkstyle-hbase-server.txt | | whitespace | https://builds.apache.org/job/PreCommit-HBASE-Build/15268/artifact/patchprocess/whitespace-eol.txt | | unit | https://builds.apache.org/job/PreCommit-HBASE-Build/15268/artifact/patchprocess/patch-unit-hbase-server.txt | | Test Results | https://builds.apache.org/job/PreCommit-HBASE-Build/15268/testReport/ | | Max. process+thread count | 4770 (vs. ulimit of 10000) | | modules | C: hbase-server U: hbase-server | | Console output | https://builds.apache.org/job/PreCommit-HBASE-Build/15268/console | | Powered by | Apache Yetus 0.8.0 http://yetus.apache.org | This message was automatically generated. > Delete dead server from dead server list too early leads to concurrent Server > Crash Procedures(SCP) for a same server > --------------------------------------------------------------------------------------------------------------------- > > Key: HBASE-21565 > URL: https://issues.apache.org/jira/browse/HBASE-21565 > Project: HBase > Issue Type: Bug > Affects Versions: 3.0.0 > Reporter: Jingyun Tian > Assignee: Jingyun Tian > Priority: Critical > Attachments: HBASE-21565.master.001.patch, > HBASE-21565.master.002.patch, HBASE-21565.master.003.patch, > HBASE-21565.master.004.patch, HBASE-21565.master.005.patch > > > There are 2 kinds of SCP for a same server will be scheduled during cluster > restart, one is ZK session timeout, the other one is new server report in > will cause the stale one do fail over. The only barrier for these 2 kinds of > SCP is check if the server is in the dead server list. > {code} > if (this.deadservers.isDeadServer(serverName)) { > LOG.warn("Expiration called on {} but crash processing already in > progress", serverName); > return false; > } > {code} > But the problem is when master finish initialization, it will delete all > stale servers from dead server list. Thus when the SCP for ZK session timeout > come in, the barrier is already removed. > Here is the logs that how this problem occur. > {code} > 2018-12-07,11:42:37,589 INFO > org.apache.hadoop.hbase.master.procedure.ServerCrashProcedure: Start pid=9, > state=RUNNABLE:SERVER_CRASH_START, hasLock=true; ServerCrashProcedure > server=c4-hadoop-tst-st27.bj,29100,1544153846859, splitWal=true, meta=false > 2018-12-07,11:42:58,007 INFO > org.apache.hadoop.hbase.master.procedure.ServerCrashProcedure: Start pid=444, > state=RUNNABLE:SERVER_CRASH_START, hasLock=true; ServerCrashProcedure > server=c4-hadoop-tst-st27.bj,29100,1544153846859, splitWal=true, meta=false > {code} > Now we can see two SCP are scheduled for the same server. > But the first procedure is finished after the second SCP starts. > {code} > 2018-12-07,11:43:08,038 INFO > org.apache.hadoop.hbase.procedure2.ProcedureExecutor: Finished pid=9, > state=SUCCESS, hasLock=false; ServerCrashProcedure > server=c4-hadoop-tst-st27.bj,29100,1544153846859, splitWal=true, meta=false > in 30.5340sec > {code} > Thus it will leads the problem that regions will be assigned twice. > {code} > 2018-12-07,12:16:33,039 WARN > org.apache.hadoop.hbase.master.assignment.AssignmentManager: rit=OPEN, > location=c4-hadoop-tst-st28.bj,29100,1544154149607, table=test_failover, > region=459b3130b40caf3b8f3e1421766f4089 reported OPEN on > server=c4-hadoop-tst-st29.bj,29100,1544154149615 but state has otherwise > {code} > And here we can see the server is removed from dead server list before the > second SCP starts. > {code} > 2018-12-07,11:42:44,938 DEBUG org.apache.hadoop.hbase.master.DeadServer: > Removed c4-hadoop-tst-st27.bj,29100,1544153846859 ; numProcessing=3 > {code} > Thus we should not delete dead server from dead server list immediately. > Patch to fix this problem will be upload later. > -- This message was sent by Atlassian JIRA (v7.6.3#76005)