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Posted to common-issues@hadoop.apache.org by "Chen Liang (JIRA)" <ji...@apache.org> on 2019/01/11 20:59:00 UTC
[jira] [Updated] (HADOOP-16013) DecayRpcScheduler decay thread
should run as a daemon
[ https://issues.apache.org/jira/browse/HADOOP-16013?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Chen Liang updated HADOOP-16013:
--------------------------------
Resolution: Fixed
Fix Version/s: 3.3.0
2.10.0
Status: Resolved (was: Patch Available)
> DecayRpcScheduler decay thread should run as a daemon
> -----------------------------------------------------
>
> Key: HADOOP-16013
> URL: https://issues.apache.org/jira/browse/HADOOP-16013
> Project: Hadoop Common
> Issue Type: Bug
> Components: ipc
> Affects Versions: 3.3.0
> Reporter: Erik Krogen
> Assignee: Erik Krogen
> Priority: Major
> Fix For: 2.10.0, 3.3.0
>
> Attachments: HADOOP-16013.000.patch
>
>
> {{DecayRpcScheduler}} sets up a {{Timer}} to schedule a decay of the weights it tracks:
> {code}
> // Setup delay timer
> Timer timer = new Timer();
> DecayTask task = new DecayTask(this, timer);
> timer.scheduleAtFixedRate(task, decayPeriodMillis, decayPeriodMillis);
> {code}
> However this Timer is not set up as a daemon thread. I have seen this cause my JVM to refuse to exit when running, for example, NNThroughputBenchmark with FairCallQueue enabled.
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