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Hadoop QA commented on YARN-8648: --------------------------------- | (/) *{color:green}+1 overall{color}* | \\ \\ || Vote || Subsystem || Runtime || Comment || | {color:blue}0{color} | {color:blue} reexec {color} | {color:blue} 0m 27s{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 3 new or modified test files. {color} | || || || || {color:brown} trunk Compile Tests {color} || | {color:green}+1{color} | {color:green} mvninstall {color} | {color:green} 19m 29s{color} | {color:green} trunk passed {color} | | {color:green}+1{color} | {color:green} compile {color} | {color:green} 1m 3s{color} | {color:green} trunk passed {color} | | {color:green}+1{color} | {color:green} checkstyle {color} | {color:green} 0m 23s{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} 11m 14s{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 56s{color} | {color:green} trunk passed {color} | | {color:green}+1{color} | {color:green} javadoc {color} | {color:green} 0m 21s{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:green}+1{color} | {color:green} checkstyle {color} | {color:green} 0m 19s{color} | {color:green} the patch passed {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 33s{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} 1m 0s{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} 18m 45s{color} | {color:green} hadoop-yarn-server-nodemanager 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} 68m 50s{color} | {color:black} {color} | \\ \\ || 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/12938970/YARN-8648.004.patch | | Optional Tests | dupname asflicense compile javac javadoc mvninstall mvnsite unit shadedclient findbugs checkstyle cc | | uname | Linux 4633a8fb99fe 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 / bf8a175 | | maven | version: Apache Maven 3.3.9 | | Default Java | 1.8.0_181 | | findbugs | v3.1.0-RC1 | | Test Results | https://builds.apache.org/job/PreCommit-YARN-Build/21791/testReport/ | | Max. process+thread count | 440 (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/21791/console | | Powered by | Apache Yetus 0.8.0 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, YARN-8648.002.patch, > YARN-8648.003.patch, YARN-8648.004.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. -- This message was sent by Atlassian JIRA (v7.6.3#76005) --------------------------------------------------------------------- To unsubscribe, e-mail: yarn-issues-unsubscr...@hadoop.apache.org For additional commands, e-mail: yarn-issues-h...@hadoop.apache.org