[jira] [Commented] (SOLR-8694) DistributedMap/Queue simplifications and fixes.

["Mark Miller (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/SOLR-8694?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15154658#comment-15154658 ] 

Mark Miller commented on SOLR-8694:
-----------------------------------

Nice catch! We should audit all our Watcher process methods for this. It's been awhile since we did. 

Bummer, doesn't look like any explicit tests already exist for this class to build on and try and catch this.

> DistributedMap/Queue simplifications and fixes.
> -----------------------------------------------
>
>                 Key: SOLR-8694
>                 URL: https://issues.apache.org/jira/browse/SOLR-8694
>             Project: Solr
>          Issue Type: Bug
>          Components: SolrCloud
>    Affects Versions: 5.4.1
>            Reporter: Scott Blum
>              Labels: patch, reliability
>         Attachments: SOLR-8694.patch
>
>
> Bugfix in DistributedQueue, it could add too many watchers since it assumed the watcher was cleared on connection events.
> Huge simplification to DistributedMap; it implemented a lot of tricky stuff that no one is actually using.



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