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From "Colin Patrick McCabe (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (HDFS-6036) Forcibly timeout misbehaving DFSClients that try to do no-checksum reads that extend too long
Date Tue, 29 Jul 2014 02:14:38 GMT

     [ https://issues.apache.org/jira/browse/HDFS-6036?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Colin Patrick McCabe updated HDFS-6036:
---------------------------------------

    Attachment: HDFS-6036.001.patch

This patch implements revocation of mlocked areas after enough time has elapsed.  Now a misbehaving
client can no longer block the munlock indefinitely.

I added a new test, TestFsDatasetCacheRevocation.  It uses a somewhat different configuration
from the other tests, so it needed to be separate (the others have a fixed config set up in
the Before sections).

> Forcibly timeout misbehaving DFSClients that try to do no-checksum reads that extend
too long
> ---------------------------------------------------------------------------------------------
>
>                 Key: HDFS-6036
>                 URL: https://issues.apache.org/jira/browse/HDFS-6036
>             Project: Hadoop HDFS
>          Issue Type: Sub-task
>          Components: caching, datanode
>    Affects Versions: 2.5.0
>            Reporter: Colin Patrick McCabe
>            Assignee: Colin Patrick McCabe
>         Attachments: HDFS-6036.001.patch
>
>
> We should forcibly timeout misbehaving DFSClients that try to do no-checksum reads that
extend too long.



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