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https://issues.apache.org/jira/browse/HDFS-8868?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14680446#comment-14680446
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Siqi Li commented on HDFS-8868:
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Hi [~mingma] and [~jira.shegalov], can you guys take a look at this jira.
> Trash Emptier stop working in cluster with federated namenodes
> --------------------------------------------------------------
>
> Key: HDFS-8868
> URL: https://issues.apache.org/jira/browse/HDFS-8868
> Project: Hadoop HDFS
> Issue Type: Bug
> Components: federation
> Reporter: Siqi Li
> Assignee: Siqi Li
> Attachments: HDFS-8868.v1.patch
>
>
> when we have federation set up, the default file system would become viewfs,
> trash emptier is going to scan viewfs://namespace/user. However, if we don't
> have a link in the mounttable.xml (viewfs://namespace/user --->
> hdfs://namespace/user), then trash emptier cannot find the user directory.
> Therefore, we should have namenode use hdfs as its default filesystem
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