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https://issues.apache.org/jira/browse/HBASE-16616?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15485599#comment-15485599
]
Hadoop QA commented on HBASE-16616:
-----------------------------------
| (x) *{color:red}-1 overall{color}* |
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|| Vote || Subsystem || Runtime || Comment ||
| {color:blue}0{color} | {color:blue} reexec {color} | {color:blue} 0m 19s
{color} | {color:blue} Docker mode activated. {color} |
| {color:blue}0{color} | {color:blue} patch {color} | {color:blue} 0m 2s
{color} | {color:blue} The patch file was not named according to hbase's naming
conventions. Please see
https://yetus.apache.org/documentation/0.3.0/precommit-patchnames for
instructions. {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:red}-1{color} | {color:red} test4tests {color} | {color:red} 0m 0s
{color} | {color:red} The patch doesn't appear to include any new or modified
tests. Please justify why no new tests are needed for this patch. Also please
list what manual steps were performed to verify this patch. {color} |
| {color:blue}0{color} | {color:blue} mvndep {color} | {color:blue} 0m 10s
{color} | {color:blue} Maven dependency ordering for branch {color} |
| {color:green}+1{color} | {color:green} mvninstall {color} | {color:green} 1m
48s {color} | {color:green} branch-1 passed {color} |
| {color:green}+1{color} | {color:green} compile {color} | {color:green} 0m 46s
{color} | {color:green} branch-1 passed with JDK v1.8.0_101 {color} |
| {color:green}+1{color} | {color:green} compile {color} | {color:green} 0m 53s
{color} | {color:green} branch-1 passed with JDK v1.7.0_111 {color} |
| {color:green}+1{color} | {color:green} checkstyle {color} | {color:green} 0m
45s {color} | {color:green} branch-1 passed {color} |
| {color:green}+1{color} | {color:green} mvneclipse {color} | {color:green} 0m
29s {color} | {color:green} branch-1 passed {color} |
| {color:red}-1{color} | {color:red} findbugs {color} | {color:red} 2m 1s
{color} | {color:red} hbase-server in branch-1 has 1 extant Findbugs warnings.
{color} |
| {color:green}+1{color} | {color:green} javadoc {color} | {color:green} 0m 45s
{color} | {color:green} branch-1 passed with JDK v1.8.0_101 {color} |
| {color:green}+1{color} | {color:green} javadoc {color} | {color:green} 0m 54s
{color} | {color:green} branch-1 passed with JDK v1.7.0_111 {color} |
| {color:blue}0{color} | {color:blue} mvndep {color} | {color:blue} 0m 11s
{color} | {color:blue} Maven dependency ordering for patch {color} |
| {color:green}+1{color} | {color:green} mvninstall {color} | {color:green} 1m
8s {color} | {color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} compile {color} | {color:green} 0m 53s
{color} | {color:green} the patch passed with JDK v1.8.0_101 {color} |
| {color:green}+1{color} | {color:green} javac {color} | {color:green} 0m 53s
{color} | {color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} compile {color} | {color:green} 0m 56s
{color} | {color:green} the patch passed with JDK v1.7.0_111 {color} |
| {color:green}+1{color} | {color:green} javac {color} | {color:green} 0m 56s
{color} | {color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} checkstyle {color} | {color:green} 0m
47s {color} | {color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} mvneclipse {color} | {color:green} 0m
30s {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} hadoopcheck {color} | {color:green}
18m 3s {color} | {color:green} The patch does not cause any errors with Hadoop
2.4.0 2.4.1 2.5.0 2.5.1 2.5.2 2.6.1 2.6.2 2.6.3 2.7.1. {color} |
| {color:green}+1{color} | {color:green} hbaseprotoc {color} | {color:green} 0m
31s {color} | {color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} findbugs {color} | {color:green} 3m
35s {color} | {color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} javadoc {color} | {color:green} 0m 50s
{color} | {color:green} the patch passed with JDK v1.8.0_101 {color} |
| {color:green}+1{color} | {color:green} javadoc {color} | {color:green} 0m 56s
{color} | {color:green} the patch passed with JDK v1.7.0_111 {color} |
| {color:green}+1{color} | {color:green} unit {color} | {color:green} 1m 48s
{color} | {color:green} hbase-common in the patch passed. {color} |
| {color:red}-1{color} | {color:red} unit {color} | {color:red} 86m 21s {color}
| {color:red} hbase-server in the patch failed. {color} |
| {color:green}+1{color} | {color:green} asflicense {color} | {color:green} 0m
31s {color} | {color:green} The patch does not generate ASF License warnings.
{color} |
| {color:black}{color} | {color:black} {color} | {color:black} 127m 26s {color}
| {color:black} {color} |
\\
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|| Reason || Tests ||
| Failed junit tests | hadoop.hbase.regionserver.TestClusterId |
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|| Subsystem || Report/Notes ||
| Docker | Client=1.11.2 Server=1.11.2 Image:yetus/hbase:date2016-09-12 |
| JIRA Patch URL |
https://issues.apache.org/jira/secure/attachment/12828106/16616.branch-1.v2.txt
|
| JIRA Issue | HBASE-16616 |
| Optional Tests | asflicense javac javadoc unit findbugs hadoopcheck
hbaseanti checkstyle compile |
| uname | Linux b624c8d41c64 3.13.0-92-generic #139-Ubuntu SMP Tue Jun 28
20:42:26 UTC 2016 x86_64 x86_64 x86_64 GNU/Linux |
| Build tool | maven |
| Personality | /testptch/patchprocess/precommit/personality/hbase.sh |
| git revision | branch-1 / 94026d0 |
| Default Java | 1.7.0_111 |
| Multi-JDK versions | /usr/lib/jvm/java-8-oracle:1.8.0_101
/usr/lib/jvm/java-7-openjdk-amd64:1.7.0_111 |
| findbugs | v3.0.0 |
| findbugs |
https://builds.apache.org/job/PreCommit-HBASE-Build/3518/artifact/patchprocess/branch-findbugs-hbase-server-warnings.html
|
| unit |
https://builds.apache.org/job/PreCommit-HBASE-Build/3518/artifact/patchprocess/patch-unit-hbase-server.txt
|
| unit test logs |
https://builds.apache.org/job/PreCommit-HBASE-Build/3518/artifact/patchprocess/patch-unit-hbase-server.txt
|
| Test Results |
https://builds.apache.org/job/PreCommit-HBASE-Build/3518/testReport/ |
| modules | C: hbase-common hbase-server U: . |
| Console output |
https://builds.apache.org/job/PreCommit-HBASE-Build/3518/console |
| Powered by | Apache Yetus 0.3.0 http://yetus.apache.org |
This message was automatically generated.
> Rpc handlers stuck on ThreadLocalMap.expungeStaleEntry
> ------------------------------------------------------
>
> Key: HBASE-16616
> URL: https://issues.apache.org/jira/browse/HBASE-16616
> Project: HBase
> Issue Type: Improvement
> Components: Performance
> Affects Versions: 1.2.2
> Reporter: Tomu Tsuruhara
> Assignee: Tomu Tsuruhara
> Fix For: 2.0.0, 1.4.0
>
> Attachments: 16616.branch-1.v2.txt, HBASE-16616.master.001.patch,
> HBASE-16616.master.002.patch, ScreenShot 2016-09-09 14.17.53.png
>
>
> In our HBase 1.2.2 cluster, some regionserver showed too bad
> "QueueCallTime_99th_percentile" exceeding 10 seconds.
> Most rpc handler threads stuck on ThreadLocalMap.expungeStaleEntry call at
> that time.
> {noformat}
> "PriorityRpcServer.handler=18,queue=0,port=16020" #322 daemon prio=5
> os_prio=0 tid=0x00007fd422062800 nid=0x19b89 runnable [0x00007fcb8a821000]
> java.lang.Thread.State: RUNNABLE
> at
> java.lang.ThreadLocal$ThreadLocalMap.expungeStaleEntry(ThreadLocal.java:617)
> at java.lang.ThreadLocal$ThreadLocalMap.remove(ThreadLocal.java:499)
> at
> java.lang.ThreadLocal$ThreadLocalMap.access$200(ThreadLocal.java:298)
> at java.lang.ThreadLocal.remove(ThreadLocal.java:222)
> at
> java.util.concurrent.locks.ReentrantReadWriteLock$Sync.tryReleaseShared(ReentrantReadWriteLock.java:426)
> at
> java.util.concurrent.locks.AbstractQueuedSynchronizer.releaseShared(AbstractQueuedSynchronizer.java:1341)
> at
> java.util.concurrent.locks.ReentrantReadWriteLock$ReadLock.unlock(ReentrantReadWriteLock.java:881)
> at
> com.yammer.metrics.stats.ExponentiallyDecayingSample.unlockForRegularUsage(ExponentiallyDecayingSample.java:196)
> at
> com.yammer.metrics.stats.ExponentiallyDecayingSample.update(ExponentiallyDecayingSample.java:113)
> at
> com.yammer.metrics.stats.ExponentiallyDecayingSample.update(ExponentiallyDecayingSample.java:81)
> at
> org.apache.hadoop.metrics2.lib.MutableHistogram.add(MutableHistogram.java:81)
> at
> org.apache.hadoop.metrics2.lib.MutableRangeHistogram.add(MutableRangeHistogram.java:59)
> at
> org.apache.hadoop.hbase.ipc.MetricsHBaseServerSourceImpl.dequeuedCall(MetricsHBaseServerSourceImpl.java:194)
> at
> org.apache.hadoop.hbase.ipc.MetricsHBaseServer.dequeuedCall(MetricsHBaseServer.java:76)
> at org.apache.hadoop.hbase.ipc.RpcServer.call(RpcServer.java:2192)
> at org.apache.hadoop.hbase.ipc.CallRunner.run(CallRunner.java:112)
> at
> org.apache.hadoop.hbase.ipc.RpcExecutor.consumerLoop(RpcExecutor.java:133)
> at org.apache.hadoop.hbase.ipc.RpcExecutor$1.run(RpcExecutor.java:108)
> at java.lang.Thread.run(Thread.java:745)
> {noformat}
> We were using jdk 1.8.0_92 and here is a snippet from ThreadLocal.java.
> {code}
> 616: while (tab[h] != null)
> 617: h = nextIndex(h, len);
> {code}
> So I hypothesized that there're too many consecutive entries in {{tab}} array
> and actually I found them in the heapdump.
> !ScreenShot 2016-09-09 14.17.53.png|width=50%!
> Most of these entries pointed at instance of
> {{org.apache.hadoop.hbase.util.Counter$1}}
> which is equivarent to {{indexHolderThreadLocal}} instance-variable in the
> {{Counter}} class.
> Because {{RpcServer$Connection}} class creates a {{Counter}} instance
> {{rpcCount}} for every connections,
> it is possible to have lots of {{Counter#indexHolderThreadLocal}} instances
> in RegionServer process
> when we repeat connect-and-close from client. As a result, a ThreadLocalMap
> can have lots of consecutive
> entires.
> Usually, since each entry is a {{WeakReference}}, these entries are collected
> and removed
> by garbage-collector soon after connection closed.
> But if connection's life-time was long enough to survive youngGC, it wouldn't
> be collected until old-gen collector runs.
> Furthermore, under G1GC deployment, it is possible not to be collected even
> by old-gen GC(mixed GC)
> if entries sit in a region which doesn't have much garbages.
> Actually we used G1GC when we encountered this problem.
> We should remove the entry from ThreadLocalMap by calling ThreadLocal#remove
> explicitly.
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