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From "Jordan Zimmerman (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (CURATOR-14) Memory leak in Curator watches
Date Tue, 04 Jun 2013 18:35:20 GMT

    [ https://issues.apache.org/jira/browse/CURATOR-14?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13674680#comment-13674680
] 

Jordan Zimmerman commented on CURATOR-14:
-----------------------------------------

In my implementation of NamespaceWatcherMap there isn't a need to return the watcher. It uses
a Guava cache with weak values. Do you see a need to return watchers to the pool?
                
> Memory leak in Curator watches
> ------------------------------
>
>                 Key: CURATOR-14
>                 URL: https://issues.apache.org/jira/browse/CURATOR-14
>             Project: Apache Curator
>          Issue Type: New Feature
>          Components: Recipes
>    Affects Versions: 2.0.0-incubating
>            Reporter: Brandon Beck
>            Priority: Minor
>         Attachments: CURATOR-14-draft-2.patch, CURATOR-14-draft-3.patch, CURATOR-14.patch,
MemoryTest.java
>
>
> The JVM runs out of memory if you repetitively create a PathChildrenCache, start it then
immediately stop it.  It appears that the memory is taken up by a watch that isn't ever cleaned
up.  Curator attempts to do some pooling of watches, but doesn't seem to use the path in the
pooling.

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