[jira] [Work started] (HDFS-3275) Format command overwrites contents of non-empty shared edits dir if name dirs are empty without any prompting

["amith (Work started) (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/HDFS-3275?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Work on HDFS-3275 started by amith.

> Format command overwrites contents of non-empty shared edits dir if name dirs are empty without any prompting
> -------------------------------------------------------------------------------------------------------------
>
>                 Key: HDFS-3275
>                 URL: https://issues.apache.org/jira/browse/HDFS-3275
>             Project: Hadoop HDFS
>          Issue Type: Bug
>          Components: ha, name-node
>    Affects Versions: 2.0.0
>            Reporter: Vinithra Varadharajan
>            Assignee: amith
>
> To reproduce:
> # Configure a NameNode with namedirs and a shared edits dir, all of which are empty.
> # Run hdfs namenode -format. Namedirs and shared edits dir gets populated.
> # Delete the contents of the namedirs. Leave the shared edits dir as is. Check the timestamps of the shared edits dir contents.
> # Run format again. The namedirs as well as the shared edits dir get formatted. The shared edits dir's contents have been replaced without any prompting.

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