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Posted to yarn-issues@hadoop.apache.org by "genericqa (JIRA)" <ji...@apache.org> on 2018/06/03 05:12:00 UTC
[jira] [Commented] (YARN-8382) cgroup file leak in NM
[ https://issues.apache.org/jira/browse/YARN-8382?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16499310#comment-16499310 ]
genericqa commented on YARN-8382:
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| (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 30s{color} | {color:blue} Docker mode activated. {color} |
|| || || || {color:brown} Prechecks {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:brown} trunk Compile Tests {color} ||
| {color:green}+1{color} | {color:green} mvninstall {color} | {color:green} 23m 9s{color} | {color:green} trunk passed {color} |
| {color:green}+1{color} | {color:green} compile {color} | {color:green} 0m 55s{color} | {color:green} trunk passed {color} |
| {color:green}+1{color} | {color:green} checkstyle {color} | {color:green} 0m 24s{color} | {color:green} trunk passed {color} |
| {color:green}+1{color} | {color:green} mvnsite {color} | {color:green} 0m 35s{color} | {color:green} trunk passed {color} |
| {color:green}+1{color} | {color:green} shadedclient {color} | {color:green} 10m 8s{color} | {color:green} branch has no errors when building and testing our client artifacts. {color} |
| {color:green}+1{color} | {color:green} findbugs {color} | {color:green} 0m 49s{color} | {color:green} trunk passed {color} |
| {color:green}+1{color} | {color:green} javadoc {color} | {color:green} 0m 24s{color} | {color:green} trunk passed {color} |
|| || || || {color:brown} Patch Compile Tests {color} ||
| {color:green}+1{color} | {color:green} mvninstall {color} | {color:green} 0m 32s{color} | {color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} compile {color} | {color:green} 0m 50s{color} | {color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} javac {color} | {color:green} 0m 50s{color} | {color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} checkstyle {color} | {color:green} 0m 18s{color} | {color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} mvnsite {color} | {color:green} 0m 29s{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} shadedclient {color} | {color:green} 10m 20s{color} | {color:green} patch has no errors when building and testing our client artifacts. {color} |
| {color:green}+1{color} | {color:green} findbugs {color} | {color:green} 0m 55s{color} | {color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} javadoc {color} | {color:green} 0m 21s{color} | {color:green} the patch passed {color} |
|| || || || {color:brown} Other Tests {color} ||
| {color:green}+1{color} | {color:green} unit {color} | {color:green} 19m 43s{color} | {color:green} hadoop-yarn-server-nodemanager in the patch passed. {color} |
| {color:green}+1{color} | {color:green} asflicense {color} | {color:green} 0m 23s{color} | {color:green} The patch does not generate ASF License warnings. {color} |
| {color:black}{color} | {color:black} {color} | {color:black} 70m 52s{color} | {color:black} {color} |
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|| Subsystem || Report/Notes ||
| Docker | Client=17.05.0-ce Server=17.05.0-ce Image:yetus/hadoop:abb62dd |
| JIRA Issue | YARN-8382 |
| JIRA Patch URL | https://issues.apache.org/jira/secure/attachment/12926265/YARN-8382.002.patch |
| Optional Tests | asflicense compile javac javadoc mvninstall mvnsite unit shadedclient findbugs checkstyle |
| uname | Linux 16da4ffcae7b 4.4.0-89-generic #112-Ubuntu SMP Mon Jul 31 19:38:41 UTC 2017 x86_64 x86_64 x86_64 GNU/Linux |
| Build tool | maven |
| Personality | /testptch/patchprocess/precommit/personality/provided.sh |
| git revision | trunk / a804b7c |
| maven | version: Apache Maven 3.3.9 |
| Default Java | 1.8.0_162 |
| findbugs | v3.1.0-RC1 |
| Test Results | https://builds.apache.org/job/PreCommit-YARN-Build/20932/testReport/ |
| Max. process+thread count | 409 (vs. ulimit of 10000) |
| modules | C: hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-nodemanager U: hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-nodemanager |
| Console output | https://builds.apache.org/job/PreCommit-YARN-Build/20932/console |
| Powered by | Apache Yetus 0.8.0-SNAPSHOT http://yetus.apache.org |
This message was automatically generated.
> cgroup file leak in NM
> ----------------------
>
> Key: YARN-8382
> URL: https://issues.apache.org/jira/browse/YARN-8382
> Project: Hadoop YARN
> Issue Type: Bug
> Components: nodemanager
> Environment: we write an container with a shutdownHook which has a piece of code like "while(true) sleep(100)" . when *yarn.nodemanager.linux-container-executor.cgroups.delete-timeout-ms <* *yarn.nodemanager.sleep-delay-before-sigkill.ms , cgourp file leak happens; when* *yarn.nodemanager.linux-container-executor.cgroups.delete-timeout-ms >* ** *yarn.nodemanager.sleep-delay-before-sigkill.ms, cgroup file is deleted successfully***
> Reporter: Hu Ziqian
> Assignee: Hu Ziqian
> Priority: Major
> Attachments: YARN-8382-branch-2.8.3.001.patch, YARN-8382-branch-2.8.3.002.patch, YARN-8382.001.patch, YARN-8382.002.patch
>
>
> As Jiandan said in YARN-6525, NM may delete Cgroup container file timeout with logs like below:
> org.apache.hadoop.yarn.server.nodemanager.util.CgroupsLCEResourcesHandler: Unable to delete cgroup at: /cgroup/cpu/hadoop-yarn/container_xxx, tried to delete for 1000ms
>
> we found one situation is that when we set *yarn.nodemanager.sleep-delay-before-sigkill.ms* bigger than *yarn.nodemanager.linux-container-executor.cgroups.delete-timeout-ms*, the cgroup file leak happens *.*
>
> One container process tree looks like follow graph:
> bash(16097)───java(16099)─┬─\{java}(16100)
> ├─\{java}(16101)
> {{ ├─\{java}(16102)}}
>
> {{when NM kills a container, NM sends kill -15 -pid to kill container process group. Bash process will exit when it received sigterm, but java process may do some job (shutdownHook etc.), and doesn't exit unit receive sigkill. And when bash process exits, CgroupsLCEResourcesHandler begin to try to delete cgroup files. So when *yarn.nodemanager.linux-container-executor.cgroups.delete-timeout-ms* arrived, the java processes may still running and cgourp/tasks still not empty and cause a cgroup file leak.}}
>
> {{we add a condition that *yarn.nodemanager.linux-container-executor.cgroups.delete-timeout-ms* must bigger than *yarn.nodemanager.sleep-delay-before-sigkill.ms* to solve this problem.}}
>
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