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https://issues.apache.org/jira/browse/HDFS-3973?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Suresh Srinivas updated HDFS-3973:
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Priority: Critical (was: Major)
Marking the bug as critical.
> Old trash directories are never deleted on upgrade from 1.x
> -----------------------------------------------------------
>
> Key: HDFS-3973
> URL: https://issues.apache.org/jira/browse/HDFS-3973
> Project: Hadoop HDFS
> Issue Type: Bug
> Affects Versions: 0.23.3, 2.0.2-alpha
> Reporter: Robert Joseph Evans
> Priority: Critical
>
> The older format of the trash checkpoint for 1.x is yyMMddHHmm the new format
> is yyMMddHHmmss(-\d+)? so if you upgrade from an old cluster to a new one,
> all of the entires in .trash will never be deleted because they currently are
> always ignored on deletion.
> We should support deleting the older format as well.
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