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https://issues.apache.org/jira/browse/HBASE-21565?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16722713#comment-16722713
]
Hadoop QA commented on HBASE-21565:
-----------------------------------
| (/) *{color:green}+1 overall{color}* |
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|| 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
54s{color} | {color:green} master passed {color} |
| {color:green}+1{color} | {color:green} compile {color} | {color:green} 2m
1s{color} | {color:green} master passed {color} |
| {color:green}+1{color} | {color:green} checkstyle {color} | {color:green} 1m
20s{color} | {color:green} master passed {color} |
| {color:green}+1{color} | {color:green} shadedjars {color} | {color:green} 4m
18s{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
16s{color} | {color:green} master passed {color} |
| {color:green}+1{color} | {color:green} javadoc {color} | {color:green} 0m
31s{color} | {color:green} master passed {color} |
|| || || || {color:brown} Patch Compile Tests {color} ||
| {color:green}+1{color} | {color:green} mvninstall {color} | {color:green} 4m
32s{color} | {color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} compile {color} | {color:green} 1m
58s{color} | {color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} javac {color} | {color:green} 1m
58s{color} | {color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} checkstyle {color} | {color:green} 1m
18s{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} 4m
40s{color} | {color:green} patch has no errors when building our shaded
downstream artifacts. {color} |
| {color:green}+1{color} | {color:green} hadoopcheck {color} | {color:green}
10m 59s{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
46s{color} | {color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} javadoc {color} | {color:green} 0m
39s{color} | {color:green} the patch passed {color} |
|| || || || {color:brown} Other Tests {color} ||
| {color:green}+1{color} | {color:green} unit {color} | {color:green}149m
34s{color} | {color:green} hbase-server in the patch passed. {color} |
| {color:green}+1{color} | {color:green} asflicense {color} | {color:green} 0m
22s{color} | {color:green} The patch does not generate ASF License warnings.
{color} |
| {color:black}{color} | {color:black} {color} | {color:black}192m 56s{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:b002b0b |
| JIRA Issue | HBASE-21565 |
| JIRA Patch URL |
https://issues.apache.org/jira/secure/attachment/12951979/HBASE-21565.master.007.patch
|
| Optional Tests | dupname asflicense javac javadoc unit findbugs
shadedjars hadoopcheck hbaseanti checkstyle compile |
| uname | Linux 1ddeadaa93c6 4.4.0-139-generic #165~14.04.1-Ubuntu SMP Wed Oct
31 10:55:11 UTC 2018 x86_64 GNU/Linux |
| Build tool | maven |
| Personality |
/home/jenkins/jenkins-slave/workspace/PreCommit-HBASE-Build@2/component/dev-support/hbase-personality.sh
|
| git revision | master / ac0b3bb547 |
| maven | version: Apache Maven 3.5.4
(1edded0938998edf8bf061f1ceb3cfdeccf443fe; 2018-06-17T18:33:14Z) |
| Default Java | 1.8.0_181 |
| findbugs | v3.1.0-RC3 |
| Test Results |
https://builds.apache.org/job/PreCommit-HBASE-Build/15298/testReport/ |
| Max. process+thread count | 4362 (vs. ulimit of 10000) |
| modules | C: hbase-server U: hbase-server |
| Console output |
https://builds.apache.org/job/PreCommit-HBASE-Build/15298/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,
> HBASE-21565.master.006.patch, HBASE-21565.master.007.patch,
> HBASE-21565.master.008.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.
>
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