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https://issues.apache.org/jira/browse/CASSANDRA-2817?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13053990#comment-13053990
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Hudson commented on CASSANDRA-2817:
-----------------------------------
Integrated in Cassandra-0.7 #510 (See
[https://builds.apache.org/job/Cassandra-0.7/510/])
Expose number of threads blocked on submitting a memtable for flush
patch by slebresne; reviewed by jbellis for CASSANDRA-2817
slebresne :
http://svn.apache.org/viewcvs.cgi/?root=Apache-SVN&view=rev&rev=1138996
Files :
*
/cassandra/branches/cassandra-0.7/src/java/org/apache/cassandra/concurrent/DebuggableThreadPoolExecutor.java
*
/cassandra/branches/cassandra-0.7/src/java/org/apache/cassandra/concurrent/JMXEnabledThreadPoolExecutorMBean.java
*
/cassandra/branches/cassandra-0.7/src/java/org/apache/cassandra/utils/StatusLogger.java
* /cassandra/branches/cassandra-0.7/CHANGES.txt
*
/cassandra/branches/cassandra-0.7/src/java/org/apache/cassandra/concurrent/JMXEnabledThreadPoolExecutor.java
*
/cassandra/branches/cassandra-0.7/src/java/org/apache/cassandra/tools/NodeProbe.java
*
/cassandra/branches/cassandra-0.7/src/java/org/apache/cassandra/tools/NodeCmd.java
> Expose number of threads blocked on submitting a memtable for flush
> -------------------------------------------------------------------
>
> Key: CASSANDRA-2817
> URL: https://issues.apache.org/jira/browse/CASSANDRA-2817
> Project: Cassandra
> Issue Type: Bug
> Components: Core
> Affects Versions: 0.7.0
> Reporter: Sylvain Lebresne
> Assignee: Sylvain Lebresne
> Priority: Minor
> Fix For: 0.7.7, 0.8.2
>
> Attachments:
> 0001-Expose-threads-blocked-on-submission-to-executor-v2.patch,
> 0001-Expose-threads-blocked-on-submission-to-executor.patch
>
>
> Writes can be blocked by a thread trying to submit a memtable while the flush
> queue is full. While this is the expected behavior (the goal being to prevent
> OOMing), it is worth exposing when that happens so that people can monitor it
> and modify settings accordingly if that happens too often.
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