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https://issues.apache.org/jira/browse/YARN-9968?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16972413#comment-16972413
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Szilard Nemeth commented on YARN-9968:
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Hi [~tarunparimi]!
Could you please add reproduction steps? Thanks!
> Public Localizer is exiting in NodeManager due to NullPointerException
> ----------------------------------------------------------------------
>
> Key: YARN-9968
> URL: https://issues.apache.org/jira/browse/YARN-9968
> Project: Hadoop YARN
> Issue Type: Bug
> Components: nodemanager
> Affects Versions: 3.1.0
> Reporter: Tarun Parimi
> Assignee: Tarun Parimi
> Priority: Major
>
> The Public Localizer is encountering a NullPointerException and exiting.
> {code:java}
> ERROR localizer.ResourceLocalizationService
> (ResourceLocalizationService.java:run(995)) - Error: Shutting down
> java.lang.NullPointerException
> at
> org.apache.hadoop.yarn.server.nodemanager.containermanager.localizer.ResourceLocalizationService$PublicLocalizer.run(ResourceLocalizationService.java:981)
> INFO localizer.ResourceLocalizationService
> (ResourceLocalizationService.java:run(997)) - Public cache exiting
> {code}
> The NodeManager still keeps on running. Subsequent localization events for
> containers keep encountering the below error, resulting in failed
> Localization of all new containers.
> {code:java}
> ERROR localizer.ResourceLocalizationService
> (ResourceLocalizationService.java:addResource(920)) - Failed to submit rsrc {
> { hdfs://namespace/raw/user/.staging/job/conf.xml 1572071824603, FILE, null
> },pending,[(container_e30_1571858463080_48304_01_000134)],12513553420029113,FAILED}
> for download. Either queue is full or threadpool is shutdown.
> java.util.concurrent.RejectedExecutionException: Task
> java.util.concurrent.ExecutorCompletionService$QueueingFuture@55c7fa21
> rejected from
> org.apache.hadoop.util.concurrent.HadoopThreadPoolExecutor@46067edd[Terminated,
> pool size = 0, active threads = 0, queued tasks = 0, completed tasks =
> 382286]
> at
> java.util.concurrent.ThreadPoolExecutor$AbortPolicy.rejectedExecution(ThreadPoolExecutor.java:2047)
> at
> java.util.concurrent.ThreadPoolExecutor.reject(ThreadPoolExecutor.java:823)
> at
> java.util.concurrent.ThreadPoolExecutor.execute(ThreadPoolExecutor.java:1369)
> at
> java.util.concurrent.ExecutorCompletionService.submit(ExecutorCompletionService.java:181)
> at
> org.apache.hadoop.yarn.server.nodemanager.containermanager.localizer.ResourceLocalizationService$PublicLocalizer.addResource(ResourceLocalizationService.java:899)
> {code}
> When this happens, the NodeManager becomes usable only after a restart.
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