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From "Chen Liang (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HDFS-12387) Ozone: Support Ratis as a first class replication mechanism
Date Fri, 08 Sep 2017 17:31:01 GMT

    [ https://issues.apache.org/jira/browse/HDFS-12387?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16158980#comment-16158980

Chen Liang commented on HDFS-12387:

Also just noticed another thing...this is not really about the change added in this JIRA though.

Is it correct at all to call {{ContainerProtocolCalls#createContainer}} in {{ChunkGroupOutputStream}}
directly? Because {{ContainerOperationClient#createContainer}} has this state machine transition
before and after calling {{ContainerProtocolCalls.createContainer}}, this gives me the impression
that anywhere else should be calling {{ContainerOperationClient#createContainer}} rather than
{{ContainerProtocolCalls.createContainer}} directly because doing this bypasses that state

Please correct me if I'm wrong...

> Ozone: Support Ratis as a first class replication mechanism
> -----------------------------------------------------------
>                 Key: HDFS-12387
>                 URL: https://issues.apache.org/jira/browse/HDFS-12387
>             Project: Hadoop HDFS
>          Issue Type: Sub-task
>          Components: ozone
>    Affects Versions: HDFS-7240
>            Reporter: Anu Engineer
>            Assignee: Anu Engineer
>            Priority: Critical
>              Labels: ozoneMerge
>         Attachments: HDFS-12387-HDFS-7240.001.patch
> Ozone container layer supports pluggable replication policies. This JIRA brings Apache
Ratis based replication to Ozone.  Apache Ratis is a java implementation of Raft protocol.

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