[jira] [Updated] (HDFS-11729) Improve NNStorageRetentionManager failure handling.

["Weiwei Yang (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/HDFS-11729?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Weiwei Yang updated HDFS-11729:
-------------------------------
    Attachment: HDFS-11729.001.patch

> Improve NNStorageRetentionManager failure handling.
> ---------------------------------------------------
>
>                 Key: HDFS-11729
>                 URL: https://issues.apache.org/jira/browse/HDFS-11729
>             Project: Hadoop HDFS
>          Issue Type: Bug
>            Reporter: Kihwal Lee
>         Attachments: HDFS-11729.001.patch
>
>
> Currently {{NNStorageRetentionManager}} will simply skip a storage directory if a problem is detected.  Since checkpoint saving does not go through the same set of checks, this can lead to a space exhaustion seen in HDFS-11714.
> Instead of ignoring errors, it should handle it properly.  One potential improvement is to catch the exception and report the storage directory failure using {{NNStorage.reportErrorsOnDirectories()}}. {{attemptRestoreRemovedStorage()}} will need extra checks. E.g. existence of a VERSION file.



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