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https://issues.apache.org/jira/browse/YARN-4530?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15075106#comment-15075106
]
tangshangwen commented on YARN-4530:
------------------------------------
when the assoc is null and the completed.get() throw a ExecutionException，This
will happen, right？
{code:title=ResourceLocalizationService.java|borderStyle=solid}
try {
Future<Path> completed = queue.take();
LocalizerResourceRequestEvent assoc = pending.remove(completed);
try {
Path local = completed.get();
if (null == assoc) {
LOG.error("Localized unkonwn resource to " + completed);
// TODO delete
return;
}
LocalResourceRequest key = assoc.getResource().getRequest();
publicRsrc.handle(new ResourceLocalizedEvent(key, local, FileUtil
.getDU(new File(local.toUri()))));
assoc.getResource().unlock();
} catch (ExecutionException e) {
LOG.info("Failed to download rsrc " + assoc.getResource(),
e.getCause());
LocalResourceRequest req = assoc.getResource().getRequest();
publicRsrc.handle(new ResourceFailedLocalizationEvent(req,
e.getMessage()));
assoc.getResource().unlock();
} catch (CancellationException e) {
// ignore; shutting down
}
{code}
> LocalizedResource trigger a NPE Cause the NodeManager exit
> ----------------------------------------------------------
>
> Key: YARN-4530
> URL: https://issues.apache.org/jira/browse/YARN-4530
> Project: Hadoop YARN
> Issue Type: Bug
> Affects Versions: 2.2.0
> Reporter: tangshangwen
>
> In our cluster, I found that LocalizedResource download failed trigger a NPE
> Cause the NodeManager shutdown.
> {noformat}
> 2015-12-29 17:18:33,706 INFO
> org.apache.hadoop.yarn.server.nodemanager.containermanager.localizer.LocalizedResource:
> Resource
> hdfs://ns3:8020/user/username/projects/user_insight/lookalike/oozie/workflow/conf/hive-site.xml
> transitioned from DOWNLOADING to FAILED
> 2015-12-29 17:18:33,708 INFO
> org.apache.hadoop.yarn.server.nodemanager.containermanager.localizer.ResourceLocalizationService:
> Downloading public rsrc:{
> hdfs://ns3/user/username/projects/user_insight/lookalike/oozie/workflow/lib/user_insight_pig_udf-0.0.1-SNAPSHOT-jar-with-dependencies.jar,
> 1451380519635, FILE, null }
> 2015-12-29 17:18:33,710 INFO
> org.apache.hadoop.yarn.server.nodemanager.containermanager.localizer.ResourceLocalizationService:
> Failed to download rsrc { {
> hdfs://ns3/user/username/projects/user_insight/lookalike/oozie/workflow/lib/unilever_support_udf-0.0.1-SNAPSHOT.jar,
> 1451380519452, FILE, null
> },pending,[(container_1451039893865_261670_01_000578)],42332661980495938,DOWNLOADING}
> java.io.IOException: Resource
> hdfs://ns3/user/username/projects/user_insight/lookalike/oozie/workflow/lib/unilever_support_udf-0.0.1-SNAPSHOT.jar
> changed on src filesystem (expected 1451380519452, was 1451380611793
> at org.apache.hadoop.yarn.util.FSDownload.copy(FSDownload.java:176)
> at org.apache.hadoop.yarn.util.FSDownload.call(FSDownload.java:276)
> at org.apache.hadoop.yarn.util.FSDownload.call(FSDownload.java:50)
> at java.util.concurrent.FutureTask.run(FutureTask.java:262)
> at
> java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:471)
> at java.util.concurrent.FutureTask.run(FutureTask.java:262)
> at
> java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
> at
> java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
> at java.lang.Thread.run(Thread.java:745)
> 2015-12-29 17:18:33,710 INFO
> org.apache.hadoop.yarn.server.nodemanager.containermanager.localizer.LocalizedResource:
> Resource
> hdfs://ns3/user/username/projects/user_insight/lookalike/oozie/workflow/lib/unilever_support_udf-0.0.1-SNAPSHOT.jar
> transitioned from DOWNLOADING to FAILED
> 2015-12-29 17:18:33,710 FATAL
> org.apache.hadoop.yarn.server.nodemanager.containermanager.localizer.ResourceLocalizationService:
> Error: Shutting down
> java.lang.NullPointerException at
> org.apache.hadoop.yarn.server.nodemanager.containermanager.localizer.ResourceLocalizationService$PublicLocalizer.run(ResourceLocalizationService.java:712)
> 2015-12-29 17:18:33,710 INFO
> org.apache.hadoop.yarn.server.nodemanager.containermanager.localizer.ResourceLocalizationService:
> Public cache exiting
> {noformat}
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