[ https://issues.apache.org/jira/browse/YARN-8648?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16595740#comment-16595740
]
genericqa commented on YARN-8648:
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| (/) *{color:green}+1 overall{color}* |
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|| Vote || Subsystem || Runtime || Comment ||
| {color:blue}0{color} | {color:blue} reexec {color} | {color:blue} 0m 24s{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:green}+1{color} | {color:green} test4tests {color} | {color:green} 0m 0s{color}
| {color:green} The patch appears to include 1 new or modified test files. {color} |
|| || || || {color:brown} trunk Compile Tests {color} ||
| {color:green}+1{color} | {color:green} mvninstall {color} | {color:green} 18m 8s{color}
| {color:green} trunk passed {color} |
| {color:green}+1{color} | {color:green} compile {color} | {color:green} 1m 2s{color} |
{color:green} trunk passed {color} |
| {color:green}+1{color} | {color:green} checkstyle {color} | {color:green} 0m 28s{color}
| {color:green} trunk passed {color} |
| {color:green}+1{color} | {color:green} mvnsite {color} | {color:green} 0m 38s{color} |
{color:green} trunk passed {color} |
| {color:green}+1{color} | {color:green} shadedclient {color} | {color:green} 11m 20s{color}
| {color:green} branch has no errors when building and testing our client artifacts. {color}
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| {color:green}+1{color} | {color:green} findbugs {color} | {color:green} 1m 4s{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 34s{color}
| {color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} compile {color} | {color:green} 0m 54s{color} |
{color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} cc {color} | {color:green} 0m 54s{color} | {color:green}
the patch passed {color} |
| {color:green}+1{color} | {color:green} javac {color} | {color:green} 0m 54s{color} | {color:green}
the patch passed {color} |
| {color:orange}-0{color} | {color:orange} checkstyle {color} | {color:orange} 0m 20s{color}
| {color:orange} hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-nodemanager:
The patch generated 1 new + 10 unchanged - 0 fixed = 11 total (was 10) {color} |
| {color:green}+1{color} | {color:green} mvnsite {color} | {color:green} 0m 32s{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} 11m 21s{color}
| {color:green} patch has no errors when building and testing our client artifacts. {color}
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| {color:green}+1{color} | {color:green} findbugs {color} | {color:green} 1m 0s{color} |
{color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} javadoc {color} | {color:green} 0m 22s{color} |
{color:green} the patch passed {color} |
|| || || || {color:brown} Other Tests {color} ||
| {color:green}+1{color} | {color:green} unit {color} | {color:green} 19m 11s{color} | {color:green}
hadoop-yarn-server-nodemanager in the patch passed. {color} |
| {color:green}+1{color} | {color:green} asflicense {color} | {color:green} 1m 8s{color}
| {color:green} The patch does not generate ASF License warnings. {color} |
| {color:black}{color} | {color:black} {color} | {color:black} 68m 59s{color} | {color:black}
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|| Subsystem || Report/Notes ||
| Docker | Client=17.05.0-ce Server=17.05.0-ce Image:yetus/hadoop:ba1ab08 |
| JIRA Issue | YARN-8648 |
| JIRA Patch URL | https://issues.apache.org/jira/secure/attachment/12937524/YARN-8648.001.patch
|
| Optional Tests | dupname asflicense compile javac javadoc mvninstall mvnsite unit
shadedclient findbugs checkstyle cc |
| uname | Linux add37685e48d 4.4.0-133-generic #159-Ubuntu SMP Fri Aug 10 07:31:43 UTC 2018
x86_64 x86_64 x86_64 GNU/Linux |
| Build tool | maven |
| Personality | /testptch/patchprocess/precommit/personality/provided.sh |
| git revision | trunk / 3e18b95 |
| maven | version: Apache Maven 3.3.9 |
| Default Java | 1.8.0_181 |
| findbugs | v3.1.0-RC1 |
| checkstyle | https://builds.apache.org/job/PreCommit-YARN-Build/21706/artifact/out/diff-checkstyle-hadoop-yarn-project_hadoop-yarn_hadoop-yarn-server_hadoop-yarn-server-nodemanager.txt
|
| Test Results | https://builds.apache.org/job/PreCommit-YARN-Build/21706/testReport/ |
| Max. process+thread count | 399 (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/21706/console |
| Powered by | Apache Yetus 0.9.0-SNAPSHOT http://yetus.apache.org |
This message was automatically generated.
> Container cgroups are leaked when using docker
> ----------------------------------------------
>
> Key: YARN-8648
> URL: https://issues.apache.org/jira/browse/YARN-8648
> Project: Hadoop YARN
> Issue Type: Bug
> Reporter: Jim Brennan
> Assignee: Jim Brennan
> Priority: Major
> Labels: Docker
> Attachments: YARN-8648.001.patch
>
>
> When you run with docker and enable cgroups for cpu, docker creates cgroups for all resources
on the system, not just for cpu. For instance, if the {{yarn.nodemanager.linux-container-executor.cgroups.hierarchy=/hadoop-yarn}},
the nodemanager will create a cgroup for each container under {{/sys/fs/cgroup/cpu/hadoop-yarn}}.
In the docker case, we pass this path via the {{--cgroup-parent}} command line argument.
Docker then creates a cgroup for the docker container under that, for instance: {{/sys/fs/cgroup/cpu/hadoop-yarn/container_id/docker_container_id}}.
> When the container exits, docker cleans up the {{docker_container_id}} cgroup, and the
nodemanager cleans up the {{container_id}} cgroup, All is good under {{/sys/fs/cgroup/hadoop-yarn}}.
> The problem is that docker also creates that same hierarchy under every resource under
{{/sys/fs/cgroup}}. On the rhel7 system I am using, these are: blkio, cpuset, devices, freezer,
hugetlb, memory, net_cls, net_prio, perf_event, and systemd. So for instance, docker creates
{{/sys/fs/cgroup/cpuset/hadoop-yarn/container_id/docker_container_id}}, but it only cleans
up the leaf cgroup {{docker_container_id}}. Nobody cleans up the {{container_id}} cgroups
for these other resources. On one of our busy clusters, we found > 100,000 of these leaked
cgroups.
> I found this in our 2.8-based version of hadoop, but I have been able to repro with current
hadoop.
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