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From "Lei (Eddy) Xu (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HDFS-11567) Ozone: Support update container
Date Mon, 27 Mar 2017 21:54:41 GMT

    [ https://issues.apache.org/jira/browse/HDFS-11567?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15944109#comment-15944109
] 

Lei (Eddy) Xu commented on HDFS-11567:
--------------------------------------

Thanks for updating the JIRA. It looks good, [~anu].


> Ozone: Support update container
> -------------------------------
>
>                 Key: HDFS-11567
>                 URL: https://issues.apache.org/jira/browse/HDFS-11567
>             Project: Hadoop HDFS
>          Issue Type: Sub-task
>          Components: ozone
>    Affects Versions: HDFS-7240
>            Reporter: Weiwei Yang
>            Assignee: Weiwei Yang
>         Attachments: HDFS-11567-HDFS-7240.001.patch
>
>
> Add support to update a container. A container has a set of states. That states include
information like SHA256 hashes, the metadata of the container, a set of key value pairs. etc.
This API allows us to update or change those values for an existing container. This API is
also critical if we want to force a rewrite of the container data on the datanode. We could
read the data and write it back to for a disk update, which would allow us to repair a container
metadata if it is really needed.



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