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https://issues.apache.org/jira/browse/SLING-6807?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15988531#comment-15988531
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Jörg Hoh commented on SLING-6807:
---------------------------------
org.apache.sling.commons.threads has version 3.2.0
> 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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