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Hadoop QA commented on YARN-9667: --------------------------------- | (/) *{color:green}+1 overall{color}* | \\ \\ || Vote || Subsystem || Runtime || Comment || | {color:blue}0{color} | {color:blue} reexec {color} | {color:blue} 0m 21s{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} 19m 20s{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} mvnsite {color} | {color:green} 0m 40s{color} | {color:green} trunk passed {color} | | {color:green}+1{color} | {color:green} shadedclient {color} | {color:green} 31m 43s{color} | {color:green} branch has no errors when building and testing our client artifacts. {color} | || || || || {color:brown} Patch Compile Tests {color} || | {color:green}+1{color} | {color:green} mvninstall {color} | {color:green} 0m 35s{color} | {color:green} the patch passed {color} | | {color:green}+1{color} | {color:green} compile {color} | {color:green} 1m 6s{color} | {color:green} the patch passed {color} | | {color:green}+1{color} | {color:green} cc {color} | {color:green} 1m 6s{color} | {color:green} the patch passed {color} | | {color:green}+1{color} | {color:green} javac {color} | {color:green} 1m 6s{color} | {color:green} the patch passed {color} | | {color:green}+1{color} | {color:green} mvnsite {color} | {color:green} 0m 37s{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 52s{color} | {color:green} patch has no errors when building and testing our client artifacts. {color} | || || || || {color:brown} Other Tests {color} || | {color:green}+1{color} | {color:green} unit {color} | {color:green} 21m 12s{color} | {color:green} hadoop-yarn-server-nodemanager in the patch passed. {color} | | {color:green}+1{color} | {color:green} asflicense {color} | {color:green} 0m 41s{color} | {color:green} The patch does not generate ASF License warnings. {color} | | {color:black}{color} | {color:black} {color} | {color:black} 68m 47s{color} | {color:black} {color} | \\ \\ || Subsystem || Report/Notes || | Docker | Client=19.03.1 Server=19.03.1 Image:yetus/hadoop:bdbca0e | | JIRA Issue | YARN-9667 | | JIRA Patch URL | https://issues.apache.org/jira/secure/attachment/12976707/YARN-9667-001.patch | | Optional Tests | dupname asflicense compile cc mvnsite javac unit | | uname | Linux 1e7d18c37fb5 4.4.0-138-generic #164-Ubuntu SMP Tue Oct 2 17:16:02 UTC 2018 x86_64 x86_64 x86_64 GNU/Linux | | Build tool | maven | | Personality | /testptch/patchprocess/precommit/personality/provided.sh | | git revision | trunk / 71aad60 | | maven | version: Apache Maven 3.3.9 | | Default Java | 1.8.0_212 | | Test Results | https://builds.apache.org/job/PreCommit-YARN-Build/24470/testReport/ | | Max. process+thread count | 446 (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/24470/console | | Powered by | Apache Yetus 0.8.0 http://yetus.apache.org | This message was automatically generated. > Container-executor.c duplicates messages to stdout > -------------------------------------------------- > > Key: YARN-9667 > URL: https://issues.apache.org/jira/browse/YARN-9667 > Project: Hadoop YARN > Issue Type: Improvement > Components: nodemanager, yarn > Affects Versions: 3.2.0 > Reporter: Adam Antal > Assignee: Peter Bacsko > Priority: Major > Attachments: YARN-9667-001.patch > > > When a container is killed by its AM we get a similar error message like this: > {noformat} > 2019-06-30 12:09:04,412 WARN > org.apache.hadoop.yarn.server.nodemanager.containermanager.linux.privileged.PrivilegedOperationExecutor: > Shell execution returned exit code: 143. Privileged Execution Operation > Stderr: > Stdout: main : command provided 1 > main : run as user is systest > main : requested yarn user is systest > Getting exit code file... > Creating script paths... > Writing pid file... > Writing to tmp file > /yarn/nm/nmPrivate/application_1561921629886_0001/container_e84_1561921629886_0001_01_000019/container_e84_1561921629886_0001_01_000019.pid.tmp > Writing to cgroup task files... > Creating local dirs... > Launching container... > Getting exit code file... > Creating script paths... > {noformat} > In container-executor.c the fork point is right after the "Creating script > paths..." part, though in the Stdout log we can clearly see it has been > written there twice. After consulting with [~pbacsko] it seems like there's a > missing flush in container-executor.c before the fork and that causes the > duplication. > I suggest to add a flush there so that it won't be duplicated: it's a bit > misleading that the child process writes out "Getting exit code file" and > "Creating script paths" even though it is clearly not doing that. > A more appealing solution could be to revisit the fprintf-fflush pairs in the > code and change them to a single call, so that the fflush calls would not be > forgotten accidentally. (It can cause problems in every place where it's > used). > Note: this issue probably affects every occasion of fork(), not just the one > from {{launch_container_as_user}} in {{main.c}}. -- This message was sent by Atlassian JIRA (v7.6.14#76016) --------------------------------------------------------------------- To unsubscribe, e-mail: yarn-issues-unsubscr...@hadoop.apache.org For additional commands, e-mail: yarn-issues-h...@hadoop.apache.org