[
https://issues.apache.org/jira/browse/SOLR-10420?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Scott Blum updated SOLR-10420:
------------------------------
Attachment: SOLR-10420-dragonsinth.patch
[~caomanhdat] [~jhump] I think this may be the right approach after reviewing
the overall design. I don't see any real reason to specifically track
lastWatcher, we just need to ensure that no more than one is ever set. And
having lastWatcher serve double-duty was a misdesign on my part. There are
really two separate stateful questions to answer:
1) Is there a watcher set?
2) Are we known to be dirty?
The answer to those two questions is not the same if we want to support
same-thread synchronous offer -> poll working as you would want. So this patch
tracks them separately.
> Solr 6.x leaking one SolrZkClient instance per second
> -----------------------------------------------------
>
> Key: SOLR-10420
> URL: https://issues.apache.org/jira/browse/SOLR-10420
> Project: Solr
> Issue Type: Bug
> Security Level: Public(Default Security Level. Issues are Public)
> Affects Versions: 5.5.2, 6.4.2, 6.5
> Reporter: Markus Jelsma
> Attachments: OverseerTest.106.stdout, OverseerTest.119.stdout,
> OverseerTest.80.stdout, OverseerTest.DEBUG.43.stdout,
> OverseerTest.DEBUG.48.stdout, OverseerTest.DEBUG.58.stdout,
> SOLR-10420-dragonsinth.patch, SOLR-10420.patch, SOLR-10420.patch,
> SOLR-10420.patch, SOLR-10420.patch, SOLR-10420.patch
>
>
> One of our nodes became berzerk after a restart, Solr went completely nuts!
> So i opened VisualVM to keep an eye on it and spotted a different problem
> that occurs in all our Solr 6.4.2 and 6.5.0 nodes.
> It appears Solr is leaking one SolrZkClient instance per second via
> DistributedQueue$ChildWatcher. That one per second is quite accurate for all
> nodes, there are about the same amount of instances as there are seconds
> since Solr started. I know VisualVM's instance count includes
> objects-to-be-collected, the instance count does not drop after a forced
> garbed collection round.
> It doesn't matter how many cores or collections the nodes carry or how heavy
> traffic is.
--
This message was sent by Atlassian JIRA
(v6.3.15#6346)
---------------------------------------------------------------------
To unsubscribe, e-mail: dev-unsubscr...@lucene.apache.org
For additional commands, e-mail: dev-h...@lucene.apache.org
