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Posted to dev@sling.apache.org by "Konrad Windszus (JIRA)" <ji...@apache.org> on 2017/04/28 09:13:04 UTC

[jira] [Commented] (SLING-6807) Sling healthcheck changes threadnames of non-HC threads

    [ https://issues.apache.org/jira/browse/SLING-6807?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15988473#comment-15988473 ] 

Konrad Windszus commented on SLING-6807:
----------------------------------------

I would rather assume a strange bug in the Commons Threading part of it. [~joerghoh] can you share the version of commons threading being used on that server?

> Sling healthcheck changes threadnames of non-HC threads
> -------------------------------------------------------
>
>                 Key: SLING-6807
>                 URL: https://issues.apache.org/jira/browse/SLING-6807
>             Project: Sling
>          Issue Type: Improvement
>          Components: Health Check
>    Affects Versions: Health Check Core 1.2.2
>            Reporter: Jörg Hoh
>
> I recently came across the interesting fact, that operations unrelated to Sling HC seem to be executed by healthcheck threads (according to the thread names in the logs).
> Today I came across this interesting stacktrace (part of a thread dump), see the thread name "Healthcheck idle".
> {noformat}
> "HealthCheck idle" #224 prio=5 os_prio=0 tid=0x00007f1d2c06d800 nid=0x6e48 runnable [0x00007f20a020e000]
>    java.lang.Thread.State: RUNNABLE
>         at java.util.ArrayList.<init>(ArrayList.java:177)
>         at com.google.common.collect.Lists.newArrayList(Lists.java:128)
>         at org.apache.jackrabbit.oak.plugins.index.lucene.OakDirectory$OakIndexFile.<init>(OakDirectory.java:259)
>         [...]
>         at org.apache.jackrabbit.oak.plugins.index.AsyncIndexUpdate.updateIndex(AsyncIndexUpdate.java:491)
>         at org.apache.jackrabbit.oak.plugins.index.AsyncIndexUpdate.runWhenPermitted(AsyncIndexUpdate.java:433)
>         at org.apache.jackrabbit.oak.plugins.index.AsyncIndexUpdate.run(AsyncIndexUpdate.java:325)
>         - locked <0x00000000826f0b70> (a org.apache.jackrabbit.oak.plugins.index.AsyncIndexUpdate)
>         at org.apache.sling.commons.scheduler.impl.QuartzJobExecutor.execute(QuartzJobExecutor.java:115)
>         at org.quartz.core.JobRunShell.run(JobRunShell.java:202)
>         at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
>         at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
>         at java.lang.Thread.run(Thread.java:745)
> {noformat}
> And I am quite sure, that the Oak AsyncIndexUpdater is not supposed to use the Sling HC threadpool.



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