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https://issues.apache.org/jira/browse/CASSANDRA-1434?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12915504#action_12915504
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Stu Hood commented on CASSANDRA-1434:
-------------------------------------
+1
> ColumnFamilyOutputFormat performs blocking writes for large batches
> -------------------------------------------------------------------
>
> Key: CASSANDRA-1434
> URL: https://issues.apache.org/jira/browse/CASSANDRA-1434
> Project: Cassandra
> Issue Type: Bug
> Components: Hadoop
> Reporter: Stu Hood
> Assignee: Jonathan Ellis
> Fix For: 0.7.0
>
> Attachments:
> 0001-Switch-away-from-Multimap-and-fix-regression-introdu.patch,
> 0002-Improve-concurrency-and-add-basic-retries-by-attempt.patch,
> 0003-Switch-RingCache-back-to-multimap.patch,
> 0004-Replace-Executor-with-map-of-threads.patch, 1434-v3.txt, 1434-v4.txt,
> 1434-v5.txt, 1434-v6.txt, 1434-v7.txt
>
>
> By default, ColumnFamilyOutputFormat batches
> {{mapreduce.output.columnfamilyoutputformat.batch.threshold}} or
> {{Long.MAX_VALUE}} mutations, and then performs a blocking write.
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