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From "Jeremiah Jordan (JIRA)" <j...@apache.org>
Subject [jira] [Created] (CASSANDRA-7533) Let MAX_OUTSTANDING_REPLAY_COUNT be configurable
Date Thu, 10 Jul 2014 21:52:05 GMT
Jeremiah Jordan created CASSANDRA-7533:
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             Summary: Let MAX_OUTSTANDING_REPLAY_COUNT be configurable
                 Key: CASSANDRA-7533
                 URL: https://issues.apache.org/jira/browse/CASSANDRA-7533
             Project: Cassandra
          Issue Type: Improvement
          Components: Core
            Reporter: Jeremiah Jordan
            Assignee: Yuki Morishita
            Priority: Minor
             Fix For: 2.0.10


There are some workloads where commit log replay will run into contention issues with multiple
things updating the same partition.  Through some testing it was found that lowering CommitLogReplayer.java
MAX_OUTSTANDING_REPLAY_COUNT can help with this issue.

The calculations added in CASSANDRA-6655 are one such place things get bottlenecked.



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