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https://issues.apache.org/jira/browse/YARN-8037?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16431526#comment-16431526
]
Miklos Szegedi commented on YARN-8037:
--------------------------------------
Thank you, [~shaneku...@gmail.com]. How about hashing the stack trace of the
exception and reporting it only, if it has not been seen before?
> CGroupsResourceCalculator logs excessive warnings on container relaunch
> -----------------------------------------------------------------------
>
> Key: YARN-8037
> URL: https://issues.apache.org/jira/browse/YARN-8037
> Project: Hadoop YARN
> Issue Type: Bug
> Reporter: Shane Kumpf
> Priority: Major
>
> When a container is relaunched, the old process no longer exists. When using
> the {{CGroupsResourceCalculator}} this results in the warning and exception
> below being logged every second until the relaunch occurs, which is excessive
> and filling up the logs.
> {code:java}
> 2018-03-16 14:30:33,438 WARN
> org.apache.hadoop.yarn.server.nodemanager.containermanager.linux.resources.CGroupsResourceCalculator:
> Failed to parse 12844
> org.apache.hadoop.yarn.exceptions.YarnException: The process vanished in the
> interim 12844
> at
> org.apache.hadoop.yarn.server.nodemanager.containermanager.linux.resources.CGroupsResourceCalculator.processFile(CGroupsResourceCalculator.java:336)
> at
> org.apache.hadoop.yarn.server.nodemanager.containermanager.linux.resources.CGroupsResourceCalculator.readTotalProcessJiffies(CGroupsResourceCalculator.java:252)
> at
> org.apache.hadoop.yarn.server.nodemanager.containermanager.linux.resources.CGroupsResourceCalculator.updateProcessTree(CGroupsResourceCalculator.java:181)
> at
> org.apache.hadoop.yarn.server.nodemanager.containermanager.linux.resources.CombinedResourceCalculator.updateProcessTree(CombinedResourceCalculator.java:52)
> at
> org.apache.hadoop.yarn.server.nodemanager.containermanager.monitor.ContainersMonitorImpl$MonitoringThread.run(ContainersMonitorImpl.java:457)
> Caused by: java.io.FileNotFoundException:
> /sys/fs/cgroup/cpu,cpuacct/hadoop-yarn/container_e01_1521209613260_0002_01_000002/cpuacct.stat
> (No such file or directory)
> at java.io.FileInputStream.open0(Native Method)
> at java.io.FileInputStream.open(FileInputStream.java:195)
> at java.io.FileInputStream.<init>(FileInputStream.java:138)
> at
> org.apache.hadoop.yarn.server.nodemanager.containermanager.linux.resources.CGroupsResourceCalculator.processFile(CGroupsResourceCalculator.java:320)
> ... 4 more
> 2018-03-16 14:30:33,438 WARN
> org.apache.hadoop.yarn.server.nodemanager.containermanager.linux.resources.CGroupsResourceCalculator:
> Failed to parse cgroups
> /sys/fs/cgroup/memory/hadoop-yarn/container_e01_1521209613260_0002_01_000002/memory.memsw.usage_in_bytes
> org.apache.hadoop.yarn.exceptions.YarnException: The process vanished in the
> interim 12844
> at
> org.apache.hadoop.yarn.server.nodemanager.containermanager.linux.resources.CGroupsResourceCalculator.processFile(CGroupsResourceCalculator.java:336)
> at
> org.apache.hadoop.yarn.server.nodemanager.containermanager.linux.resources.CGroupsResourceCalculator.getMemorySize(CGroupsResourceCalculator.java:238)
> at
> org.apache.hadoop.yarn.server.nodemanager.containermanager.linux.resources.CGroupsResourceCalculator.updateProcessTree(CGroupsResourceCalculator.java:187)
> at
> org.apache.hadoop.yarn.server.nodemanager.containermanager.linux.resources.CombinedResourceCalculator.updateProcessTree(CombinedResourceCalculator.java:52)
> at
> org.apache.hadoop.yarn.server.nodemanager.containermanager.monitor.ContainersMonitorImpl$MonitoringThread.run(ContainersMonitorImpl.java:457)
> Caused by: java.io.FileNotFoundException:
> /sys/fs/cgroup/memory/hadoop-yarn/container_e01_1521209613260_0002_01_000002/memory.usage_in_bytes
> (No such file or directory)
> at java.io.FileInputStream.open0(Native Method)
> at java.io.FileInputStream.open(FileInputStream.java:195)
> at java.io.FileInputStream.<init>(FileInputStream.java:138)
> at
> org.apache.hadoop.yarn.server.nodemanager.containermanager.linux.resources.CGroupsResourceCalculator.processFile(CGroupsResourceCalculator.java:320)
> ... 4 more{code}
> We should consider moving the exception to debug to reduce the noise at a
> minimum. Alternatively, it may make sense to stop the existing
> {{MonitoringThread}} during relaunch.
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