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https://issues.apache.org/jira/browse/HDFS-13134?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16360633#comment-16360633
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Lokesh Jain commented on HDFS-13134:
------------------------------------

v1 patch currently formats all the open containers in the datanode. After 
HDFS-13132 the format would need to be based on the pipeline. Only containers 
in pipeline whose replication factor is three need to be formatted after they 
have been successfully replicated by SCM.

> Ozone: Format open containers on datanode restart
> -------------------------------------------------
>
>                 Key: HDFS-13134
>                 URL: https://issues.apache.org/jira/browse/HDFS-13134
>             Project: Hadoop HDFS
>          Issue Type: Sub-task
>            Reporter: Lokesh Jain
>            Assignee: Lokesh Jain
>            Priority: Major
>         Attachments: HDFS-13134.001.patch
>
>
> Once a datanode is restarted its open containers should be formatted. Only 
> the open containers whose pipeline has a replication factor of three will 
> need to be formatted. The format command is sent by SCM to the datanode after 
> the corresponding containers have been successfully replicated.



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