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From "Colin Patrick McCabe (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (HDFS-5766) In DFSInputStream, do not add datanode to deadNodes after InvalidEncryptionKeyException in fetchBlockByteRange
Date Wed, 15 Jan 2014 19:23:37 GMT

     [ https://issues.apache.org/jira/browse/HDFS-5766?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Colin Patrick McCabe updated HDFS-5766:
---------------------------------------

    Summary: In DFSInputStream, do not add datanode to deadNodes after InvalidEncryptionKeyException
in fetchBlockByteRange  (was: bypass addToDeadNodes() while InvalidEncryptionKeyException
happens in fetchBlockByteRange)

> In DFSInputStream, do not add datanode to deadNodes after InvalidEncryptionKeyException
in fetchBlockByteRange
> --------------------------------------------------------------------------------------------------------------
>
>                 Key: HDFS-5766
>                 URL: https://issues.apache.org/jira/browse/HDFS-5766
>             Project: Hadoop HDFS
>          Issue Type: Bug
>          Components: hdfs-client
>    Affects Versions: 3.0.0
>            Reporter: Liang Xie
>            Assignee: Liang Xie
>         Attachments: HDFS-5766.txt
>
>
> Found this issue when i read fetchBlockByteRange code:
> If we hit InvalidEncryptionKeyException, current logic is:
> 1) reduce the retry count
> 2) clearDataEncryptionKey
> 3) addToDeadNodes
> 4) retry in another loop...
> If i am correct, we should treat InvalidEncryptionKeyException similar with InvalidBlockToken
branch, bypassing addToDeadNodes(), since it's a client related, not caused by DN side:)



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