Anu Engineer commented on HDFS-13134:

[~ljain] The change looks good, I am going to take a week to think through this 
and review with the rest of the team before I commit this. The reason is that 
command provides the ability to destroy data ( and rightfully so)
[~msingh], [~nandakumar131],[~elek] and [~xyao] Please take a look at the patch 
when you have a chance. I want to commit this only I get perspectives from 
others too. Thanks for your time and consideration.

> 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-HDFS-7240.001.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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