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From "Shashikant Banerjee (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (HDDS-161) Add functionality to queue ContainerClose command from SCM Hearbeat Reposnse to Ratis
Date Wed, 13 Jun 2018 19:38:00 GMT

     [ https://issues.apache.org/jira/browse/HDDS-161?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel

Shashikant Banerjee updated HDDS-161:
    Attachment: HDDS-161.02.patch

> Add functionality to queue ContainerClose command from SCM Hearbeat Reposnse to Ratis
> -------------------------------------------------------------------------------------
>                 Key: HDDS-161
>                 URL: https://issues.apache.org/jira/browse/HDDS-161
>             Project: Hadoop Distributed Data Store
>          Issue Type: Bug
>          Components: Ozone Datanode, SCM
>            Reporter: Shashikant Banerjee
>            Assignee: Shashikant Banerjee
>            Priority: Major
>             Fix For: 0.2.1
>         Attachments: HDDS-161.00.patch, HDDS-161.01.patch, HDDS-161.02.patch
> When a container needs to be closed at the Datanode, SCM will queue a close command which
will be encoded as a part of Heartbeat Response to the Datanode. This command will be picked
up from the response at the Datanode which will then be submitted to the XceiverServer to
process the close command. This will just queue a ContainerCloseCommand to the Ratis, where
the leader would start the transaction while the followers will reject the closeContainer
> While handling the close container inside the Datanode, we need to ensure all the ongoing
chunkWrites finish before close can proceed through. It should also reject any any incoming
I/Os in between. This will be handled as a part of separate jira.

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