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From "Shashikant Banerjee (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HDDS-550) Serialize ApplyTransaction calls per Container in ContainerStateMachine
Date Mon, 08 Oct 2018 14:37:00 GMT

    [ https://issues.apache.org/jira/browse/HDDS-550?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16641912#comment-16641912
] 

Shashikant Banerjee commented on HDDS-550:
------------------------------------------

Patch v1 serialize the applyTransaction calls inside containerStateMachine. It also updates
the Ratis snapshot version to the latest one.

> Serialize ApplyTransaction calls per Container in ContainerStateMachine
> -----------------------------------------------------------------------
>
>                 Key: HDDS-550
>                 URL: https://issues.apache.org/jira/browse/HDDS-550
>             Project: Hadoop Distributed Data Store
>          Issue Type: Bug
>            Reporter: Shashikant Banerjee
>            Assignee: Shashikant Banerjee
>            Priority: Major
>         Attachments: HDDS-550.001.patch
>
>
> As part of handling Node failures in Ozone, the block commit need to happen in order
inside ContainerStateMachine per container. With RATIS-341, it is guaranteed that the 
applyTransaction calls for committing the write chunks will be initiated only when the WriteStateMachine
data for write Chunk operations finish. 
> This Jira is aimed at making all the applyTransaction operations inside ContainerStateMachine
serial per container with a single thread Executor per container handling all applyTransactions
calls.



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