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https://issues.apache.org/jira/browse/FLUME-1327?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13402807#comment-13402807
]
Hudson commented on FLUME-1327:
-------------------------------
Integrated in flume-trunk #264 (See
[https://builds.apache.org/job/flume-trunk/264/])
FLUME-1327. File Channel can deadlock during checkpoint.
(Hari Shreedharan via Arvind Prabhakar) (Revision 1354800)
Result = SUCCESS
arvind : http://svn.apache.org/viewvc/?view=rev&rev=1354800
Files :
*
/incubator/flume/trunk/flume-ng-channels/flume-file-channel/src/main/java/org/apache/flume/channel/file/FileChannel.java
*
/incubator/flume/trunk/flume-ng-channels/flume-file-channel/src/main/java/org/apache/flume/channel/file/FileChannelConfiguration.java
*
/incubator/flume/trunk/flume-ng-channels/flume-file-channel/src/main/java/org/apache/flume/channel/file/Log.java
> File Channel can deadlock in when checkpoint happens in between a
> put/take/commit
> ---------------------------------------------------------------------------------
>
> Key: FLUME-1327
> URL: https://issues.apache.org/jira/browse/FLUME-1327
> Project: Flume
> Issue Type: Bug
> Components: Channel
> Affects Versions: v1.2.0
> Reporter: Hari Shreedharan
> Assignee: Hari Shreedharan
> Fix For: v1.2.0
>
> Attachments: FLUME-1327-1.patch
>
>
> In the following case, the FileChannel deadlocks:
> * put() grabs the read lock.
> * In another thread, the writeCheckpoint method is called, which is
> synchronized, but this method gets blocked on writelock.lock() call.
> * put() method calls roll, which is also synchronized, ends up getting
> blocked on the monitor for the Log object.
> * The lock is never acquired since the thread holding the lock is blocked on
> the monitor.
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