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From "Sylvain Lebresne (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (CASSANDRA-12031) "LEAK DETECTED" during incremental repairs
Date Wed, 06 Jul 2016 09:55:10 GMT

    [ https://issues.apache.org/jira/browse/CASSANDRA-12031?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15364071#comment-15364071
] 

Sylvain Lebresne commented on CASSANDRA-12031:
----------------------------------------------

The message says that we hadn't released some memory that we should have, which is a bug,
but the presence of the message imply said memory has just been freed, so no, you shouldn't
be worried too much.

Of course, we should still fix this. But there has been a few fix related to leaked references
recently, so I would suggest upgrading to 2.2.7 (which has just been voted on successfully
so should be available later today or tomorrow) and see if you can reproduce there. If you
can, maybe some additional log context for the error message could help track this down.


> "LEAK DETECTED" during incremental repairs
> ------------------------------------------
>
>                 Key: CASSANDRA-12031
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-12031
>             Project: Cassandra
>          Issue Type: Bug
>          Components: Streaming and Messaging
>         Environment: Centos 6.6, x86_64, Cassandra 2.2.4
>            Reporter: vin01
>            Priority: Minor
>
> I encountered some errors during an incremental repair session which look like  :-
> ERROR [Reference-Reaper:1] 2016-06-19 03:28:35,884 Ref.java:187 - LEAK DETECTED: a reference
(org.apache.cassandra.utils.concurrent.Ref$State@2ce0fab3) to class org.apache.cassandra.io.util.SafeMemory$MemoryTidy@1513857473:Memory@[7f2d462191f0..7f2d46219510)
was not released before the reference was garbage collected
> Should i be worried about these? 



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