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Posted to issues@ratis.apache.org by "Mukul Kumar Singh (Jira)" <ji...@apache.org> on 2020/03/02 12:51:00 UTC

[jira] [Updated] (RATIS-814) High CPU usage by TimeoutScheduler due to JDK bug JDK-8129861

     [ https://issues.apache.org/jira/browse/RATIS-814?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Mukul Kumar Singh updated RATIS-814:
------------------------------------
    Fix Version/s: 0.6.0

> High CPU usage by TimeoutScheduler due to JDK bug JDK-8129861
> -------------------------------------------------------------
>
>                 Key: RATIS-814
>                 URL: https://issues.apache.org/jira/browse/RATIS-814
>             Project: Ratis
>          Issue Type: Bug
>            Reporter: Lokesh Jain
>            Assignee: Lokesh Jain
>            Priority: Major
>             Fix For: 0.6.0
>
>         Attachments: RATIS-814.001.patch, flamegraph.svg
>
>
> TimeoutScheduler creates an instance of ScheduledThreadPoolExecutor with 0 core pool threads. There is a bug in JDK [https://bugs.openjdk.java.net/browse/JDK-8129861] which causes high CPU usage if ScheduledThreadPoolExecutor is instantiated with 0 core pool threads. The bug was fixed in Java 9.



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