[YARN-12] Several Findbugs issues with new FairScheduler in YARN

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 2.0.0-alpha
• Fix Version/s: 2.0.2-alpha
• Component/s: scheduler
• Assignee: Junping Du
• Reporter: Junping Du
• Created: 18/Jul/12 03:26
• Updated: 11/Oct/12 17:48
• Resolved: 08/Aug/12 18:56

Description

The good feature of FairScheduler is added recently to YARN. As recently PreCommit test from MAPREDUCE-4309, there are several bugs found by Findbugs related to FairScheduler:
org.apache.hadoop.yarn.server.resourcemanager.scheduler.fair.FairSchedulerEventLog.shutdown() might ignore java.lang.Exception
Inconsistent synchronization of org.apache.hadoop.yarn.server.resourcemanager.scheduler.fair.FairSchedulerEventLog.logDisabled; locked 50% of time
Inconsistent synchronization of org.apache.hadoop.yarn.server.resourcemanager.scheduler.fair.QueueManager.queueMaxAppsDefault; locked 50% of time
Inconsistent synchronization of org.apache.hadoop.yarn.server.resourcemanager.scheduler.fair.QueueManager.userMaxAppsDefault; locked 50% of time
The details are in:https://builds.apache.org/job/PreCommit-MAPREDUCE-Build/2612//artifact/trunk/patchprocess/newPatchFindbugsWarningshadoop-yarn-server-resourcemanager.html#DE_MIGHT_IGNORE

Issue Links

• is related to: MAPREDUCE-4439 MAPREDUCE-3451 introduced a bunch of findbugs warnings