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From "Andrew Wang (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (HDFS-5430) Support TTL on CacheBasedPathDirectives
Date Mon, 25 Nov 2013 21:56:35 GMT

     [ https://issues.apache.org/jira/browse/HDFS-5430?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Andrew Wang updated HDFS-5430:
------------------------------

    Attachment: hdfs-5430-3.patch

New patch attached. I reworked it so CDI has both an absolute and relative time. The client
can set either, but the NN will translate relative time to absolute time for the CacheDirective
and for serialization to the edit log and fsimage. Also added tests for time unit conversion.

> Support TTL on CacheBasedPathDirectives
> ---------------------------------------
>
>                 Key: HDFS-5430
>                 URL: https://issues.apache.org/jira/browse/HDFS-5430
>             Project: Hadoop HDFS
>          Issue Type: Sub-task
>          Components: datanode, namenode
>            Reporter: Colin Patrick McCabe
>            Assignee: Andrew Wang
>            Priority: Minor
>         Attachments: hdfs-5430-1.patch, hdfs-5430-2.patch, hdfs-5430-3.patch
>
>
> It would be nice if CacheBasedPathDirectives would support an expiration time, after
which they would be automatically removed by the NameNode.  This time would probably be in
wall-block time for the convenience of system administrators.



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