[
https://issues.apache.org/jira/browse/HADOOP-17749?focusedWorklogId=613486&page=com.atlassian.jira.plugin.system.issuetabpanels:worklog-tabpanel#worklog-613486
]
ASF GitHub Bot logged work on HADOOP-17749:
-------------------------------------------
Author: ASF GitHub Bot
Created on: 22/Jun/21 13:36
Start Date: 22/Jun/21 13:36
Worklog Time Spent: 10m
Work Description: hadoop-yetus commented on pull request #3080:
URL: https://github.com/apache/hadoop/pull/3080#issuecomment-865990719
:broken_heart: **-1 overall**
| Vote | Subsystem | Runtime | Logfile | Comment |
|:----:|----------:|--------:|:--------:|:-------:|
| +0 :ok: | reexec | 0m 35s | | Docker mode activated. |
|||| _ Prechecks _ |
| +1 :green_heart: | dupname | 0m 0s | | No case conflicting files
found. |
| +0 :ok: | codespell | 0m 0s | | codespell was not available. |
| +1 :green_heart: | @author | 0m 0s | | The patch does not contain
any @author tags. |
| -1 :x: | test4tests | 0m 0s | | 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.
|
|||| _ trunk Compile Tests _ |
| +1 :green_heart: | mvninstall | 31m 38s | | trunk passed |
| +1 :green_heart: | compile | 21m 11s | | trunk passed with JDK
Ubuntu-11.0.11+9-Ubuntu-0ubuntu2.20.04 |
| +1 :green_heart: | compile | 18m 16s | | trunk passed with JDK
Private Build-1.8.0_292-8u292-b10-0ubuntu1~20.04-b10 |
| +1 :green_heart: | checkstyle | 1m 8s | | trunk passed |
| +1 :green_heart: | mvnsite | 1m 36s | | trunk passed |
| +1 :green_heart: | javadoc | 1m 8s | | trunk passed with JDK
Ubuntu-11.0.11+9-Ubuntu-0ubuntu2.20.04 |
| +1 :green_heart: | javadoc | 1m 39s | | trunk passed with JDK
Private Build-1.8.0_292-8u292-b10-0ubuntu1~20.04-b10 |
| +1 :green_heart: | spotbugs | 2m 24s | | trunk passed |
| +1 :green_heart: | shadedclient | 15m 47s | | branch has no errors
when building and testing our client artifacts. |
|||| _ Patch Compile Tests _ |
| +1 :green_heart: | mvninstall | 0m 55s | | the patch passed |
| +1 :green_heart: | compile | 20m 18s | | the patch passed with JDK
Ubuntu-11.0.11+9-Ubuntu-0ubuntu2.20.04 |
| +1 :green_heart: | javac | 20m 18s | | the patch passed |
| +1 :green_heart: | compile | 18m 50s | | the patch passed with JDK
Private Build-1.8.0_292-8u292-b10-0ubuntu1~20.04-b10 |
| +1 :green_heart: | javac | 18m 50s | | the patch passed |
| +1 :green_heart: | blanks | 0m 0s | | The patch has no blanks
issues. |
| -0 :warning: | checkstyle | 1m 1s |
[/results-checkstyle-hadoop-common-project_hadoop-common.txt](https://ci-hadoop.apache.org/job/hadoop-multibranch/job/PR-3080/3/artifact/out/results-checkstyle-hadoop-common-project_hadoop-common.txt)
| hadoop-common-project/hadoop-common: The patch generated 6 new + 1
unchanged - 7 fixed = 7 total (was 8) |
| +1 :green_heart: | mvnsite | 1m 35s | | the patch passed |
| +1 :green_heart: | javadoc | 1m 5s | | the patch passed with JDK
Ubuntu-11.0.11+9-Ubuntu-0ubuntu2.20.04 |
| +1 :green_heart: | javadoc | 1m 36s | | the patch passed with JDK
Private Build-1.8.0_292-8u292-b10-0ubuntu1~20.04-b10 |
| +1 :green_heart: | spotbugs | 2m 29s | | the patch passed |
| +1 :green_heart: | shadedclient | 15m 59s | | patch has no errors
when building and testing our client artifacts. |
|||| _ Other Tests _ |
| +1 :green_heart: | unit | 17m 41s | | hadoop-common in the patch
passed. |
| +1 :green_heart: | asflicense | 0m 55s | | The patch does not
generate ASF License warnings. |
| | | 178m 13s | | |
| Subsystem | Report/Notes |
|----------:|:-------------|
| Docker | ClientAPI=1.41 ServerAPI=1.41 base:
https://ci-hadoop.apache.org/job/hadoop-multibranch/job/PR-3080/3/artifact/out/Dockerfile
|
| GITHUB PR | https://github.com/apache/hadoop/pull/3080 |
| Optional Tests | dupname asflicense compile javac javadoc mvninstall
mvnsite unit shadedclient spotbugs checkstyle codespell |
| uname | Linux 1fc4cf9c0e1f 4.15.0-60-generic #67-Ubuntu SMP Thu Aug 22
16:55:30 UTC 2019 x86_64 x86_64 x86_64 GNU/Linux |
| Build tool | maven |
| Personality | dev-support/bin/hadoop.sh |
| git revision | trunk / efd9d7ceaaf696e641ab0ddbce3643ae391ce297 |
| Default Java | Private Build-1.8.0_292-8u292-b10-0ubuntu1~20.04-b10 |
| Multi-JDK versions |
/usr/lib/jvm/java-11-openjdk-amd64:Ubuntu-11.0.11+9-Ubuntu-0ubuntu2.20.04
/usr/lib/jvm/java-8-openjdk-amd64:Private
Build-1.8.0_292-8u292-b10-0ubuntu1~20.04-b10 |
| Test Results |
https://ci-hadoop.apache.org/job/hadoop-multibranch/job/PR-3080/3/testReport/ |
| Max. process+thread count | 2601 (vs. ulimit of 5500) |
| modules | C: hadoop-common-project/hadoop-common U:
hadoop-common-project/hadoop-common |
| Console output |
https://ci-hadoop.apache.org/job/hadoop-multibranch/job/PR-3080/3/console |
| versions | git=2.25.1 maven=3.6.3 spotbugs=4.2.2 |
| Powered by | Apache Yetus 0.14.0-SNAPSHOT https://yetus.apache.org |
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Issue Time Tracking
-------------------
Worklog Id: (was: 613486)
Time Spent: 1h 50m (was: 1h 40m)
> Remove lock contention in SelectorPool of SocketIOWithTimeout
> -------------------------------------------------------------
>
> Key: HADOOP-17749
> URL: https://issues.apache.org/jira/browse/HADOOP-17749
> Project: Hadoop Common
> Issue Type: Improvement
> Components: common
> Reporter: Xuesen Liang
> Priority: Major
> Labels: pull-request-available
> Time Spent: 1h 50m
> Remaining Estimate: 0h
>
> *SelectorPool* in
> hadoop-common/src/main/java/org/apache/hadoop/net/*SocketIOWithTimeout.java*
> is a point of lock contention.
> For example:
> {code:java}
> $ grep 'waiting to lock <0x00007f7d94006d90>' 63692.jstack | uniq -c
> 1005 - waiting to lock <0x00007f7d94006d90> (a
> org.apache.hadoop.net.SocketIOWithTimeout$SelectorPool)
> {code}
> and the thread stack is as follows:
> {code:java}
> "IPC Client (324579982) connection to /100.10.6.10:60020 from user_00" #14139
> daemon prio=5 os_prio=0 tid=0x00007f7374039000 nid=0x85cc waiting for monitor
> entry [0x00007f6f45939000]
> java.lang.Thread.State: BLOCKED (on object monitor)
> at
> org.apache.hadoop.net.SocketIOWithTimeout$SelectorPool.get(SocketIOWithTimeout.java:390)
> - waiting to lock <0x00007f7d94006d90> (a
> org.apache.hadoop.net.SocketIOWithTimeout$SelectorPool)
> at
> org.apache.hadoop.net.SocketIOWithTimeout$SelectorPool.select(SocketIOWithTimeout.java:325)
> at
> org.apache.hadoop.net.SocketIOWithTimeout.doIO(SocketIOWithTimeout.java:157)
> at org.apache.hadoop.net.SocketInputStream.read(SocketInputStream.java:161)
> at org.apache.hadoop.net.SocketInputStream.read(SocketInputStream.java:131)
> at java.io.FilterInputStream.read(FilterInputStream.java:133)
> at java.io.BufferedInputStream.fill(BufferedInputStream.java:246)
> at java.io.BufferedInputStream.read(BufferedInputStream.java:265)
> - locked <0x00007fa818caf258> (a java.io.BufferedInputStream)
> at java.io.DataInputStream.readInt(DataInputStream.java:387)
> at
> org.apache.hadoop.hbase.ipc.RpcClientImpl$Connection.readResponse(RpcClientImpl.java:967)
> at
> org.apache.hadoop.hbase.ipc.RpcClientImpl$Connection.run(RpcClientImpl.java:568)
> {code}
> We should remove the lock contention.
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