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Posted to hdfs-issues@hadoop.apache.org by "Elek, Marton (JIRA)" <ji...@apache.org> on 2018/06/23 16:31:00 UTC
[jira] [Commented] (HDDS-192) Create new SCMCommand to request a
replication of a container
[ https://issues.apache.org/jira/browse/HDDS-192?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16521211#comment-16521211 ]
Elek, Marton commented on HDDS-192:
-----------------------------------
Patch is uploaded. I used the 'ReplicateContainer' as the name because CopyContainer is already used in the datanodeprotocol (it could be used to download the segments of the closed containers)
> Create new SCMCommand to request a replication of a container
> -------------------------------------------------------------
>
> Key: HDDS-192
> URL: https://issues.apache.org/jira/browse/HDDS-192
> Project: Hadoop Distributed Data Store
> Issue Type: New Feature
> Components: SCM
> Reporter: Elek, Marton
> Assignee: Elek, Marton
> Priority: Major
> Fix For: 0.2.1
>
> Attachments: HDDS-192.001.patch
>
>
> ReplicationManager needs to request replication/copy of container or deletion of container. We have DeleteContainerCommand (a command which is part of the datanode heartbeat response) but no command to request a copy of a container.
> This patch adds the command with all the required protobuf serialization/deserialization boilerplate to make it easier to review further patches.
> No business logic in this patch, but there is a unit test which checks if the message is arrived to the datanode site from the scm side.
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