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Posted to issues@ratis.apache.org by "Lokesh Jain (JIRA)" <ji...@apache.org> on 2019/07/05 16:14:00 UTC

[jira] [Created] (RATIS-613) StateMachineUpdater should limit the number of apply transaction calls

Lokesh Jain created RATIS-613:
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             Summary: StateMachineUpdater should limit the number of apply transaction calls
                 Key: RATIS-613
                 URL: https://issues.apache.org/jira/browse/RATIS-613
             Project: Ratis
          Issue Type: Bug
            Reporter: Lokesh Jain
            Assignee: Lokesh Jain


Currently StateMachineUpdater applies all the transactions until the committed index. In cases where there is a huge difference between applied and committed index, all these transactions would be pending in the state machine and can take a lot of heap space. Such a scenario was seen in the Ozone cluster where a large amount of heap was taken by unapplied transactions leading to frequent GC pauses.



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