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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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