Shashikant Banerjee commented on HDDS-179:

Thanks [~ljain], for the review comments. As per offline discussion with 
[~msingh] and [~ljain], patch v8 is updated. It also adds synchronization for 
putKey as well.

> CloseContainer command should be executed only if all the  prior "Write" type 
> container requests get executed
> -------------------------------------------------------------------------------------------------------------
>                 Key: HDDS-179
>                 URL: https://issues.apache.org/jira/browse/HDDS-179
>             Project: Hadoop Distributed Data Store
>          Issue Type: Bug
>          Components: Ozone Client, Ozone Datanode
>            Reporter: Shashikant Banerjee
>            Assignee: Shashikant Banerjee
>            Priority: Major
>             Fix For: 0.2.1
>         Attachments: HDDS-179.01.patch, HDDS-179.02.patch, HDDS-179.03.patch, 
> HDDS-179.04.patch, HDDS-179.05.patch, HDDS-179.06.patch, HDDS-179.07.patch, 
> HDDS-179.08.patch
> When a close Container command request comes to a Datanode (via SCM hearbeat 
> response) through the Ratis protocol, all the prior enqueued "Write" type of 
> request like  WriteChunk etc should be executed first before CloseContainer 
> request gets executed. This synchronization needs to be handled in the 
> containerStateMachine. This Jira aims to address this.

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