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https://issues.apache.org/jira/browse/YARN-9328?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16780732#comment-16780732
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Prabhu Joseph commented on YARN-9328:
-------------------------------------
Thanks [~eyang] for the details. Found YARN-7243 for move to slf4j is not
complete, so does fixing that should be enough, or log4j2.x also has to be
updated. Do we have any jira to migrate to log4j2.x.
> ParentQueue#apply move log outside writelock
> --------------------------------------------
>
> Key: YARN-9328
> URL: https://issues.apache.org/jira/browse/YARN-9328
> Project: Hadoop YARN
> Issue Type: Bug
> Reporter: Bibin A Chundatt
> Assignee: Prabhu Joseph
> Priority: Major
> Attachments: YARN-9328-001.patch, YARN-9328-002.patch
>
>
> {code}
> LOG.info("assignedContainer" + " queue=" + getQueueName()
> + " usedCapacity=" + getUsedCapacity() + "
> absoluteUsedCapacity="
> + getAbsoluteUsedCapacity() + " used=" + queueUsage.getUsed()
> + " cluster=" + cluster);
> {code}
> Logging can be done after log.. Logging could reduce performance ..
> {code}
> "Thread-16" #40 daemon prio=5 os_prio=0 tid=0x00007f181f9bb800 nid=0x125
> waiting for monitor entry [0x00007ef163bab000]
> java.lang.Thread.State: BLOCKED (on object monitor)
> at org.apache.log4j.Category.callAppenders(Category.java:204)
> - locked <0x00007ef2d803e2b8> (a org.apache.log4j.spi.RootLogger)
> at org.apache.log4j.Category.forcedLog(Category.java:391)
> at org.apache.log4j.Category.log(Category.java:856)
> at
> org.apache.commons.logging.impl.Log4JLogger.info(Log4JLogger.java:176)
> at
> org.apache.hadoop.yarn.server.resourcemanager.scheduler.capacity.ParentQueue.apply(ParentQueue.java:1336)
> at
> org.apache.hadoop.yarn.server.resourcemanager.scheduler.capacity.LeafQueue.apply(LeafQueue.java:1371)
> at
> org.apache.hadoop.yarn.server.resourcemanager.scheduler.common.fica.FiCaSchedulerApp.apply(FiCaSchedulerApp.java:665)
> at
> org.apache.hadoop.yarn.server.resourcemanager.scheduler.capacity.CapacityScheduler.tryCommit(CapacityScheduler.java:2946)
> at
> org.apache.hadoop.yarn.server.resourcemanager.scheduler.capacity.CapacityScheduler$ResourceCommitterService.run(CapacityScheduler.java:644)
> {code}
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