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From "Eric Tschetter (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (CURATOR-14) Memory leak in Curator watches
Date Fri, 12 Jul 2013 08:09:48 GMT

    [ https://issues.apache.org/jira/browse/CURATOR-14?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13706777#comment-13706777
] 

Eric Tschetter commented on CURATOR-14:
---------------------------------------

If we are introducing a mechanism that allows for unregistering a listener, I wonder if we
need the Soft cache.  A part of me thinks that the semantics should be that recipes are in
charge of unregistering their stuff and if they don't, they have a bug.  If we were to take
that tact, then it would seem like a Multimap would be just fine, I think?

Or, is there another reason to have the soft values that I'm not thinking of?
                
> 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-dispatchingwatcher.patch, 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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