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Date: Tue, 16 Aug 2016 11:57:20 +0000 (UTC)
From: "Karthik Palanisamy (JIRA)" <jira@apache.org>
To: hdfs-issues@hadoop.apache.org
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Subject: [jira] [Updated] (HDFS-10766) Request short circuit access failed
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archived-at: Tue, 16 Aug 2016 11:57:25 -0000


     [ https://issues.apache.org/jira/browse/HDFS-10766?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Karthik Palanisamy updated HDFS-10766:
--------------------------------------
    Attachment: HDFS-10766-1.patch

> Request short circuit access failed
> -----------------------------------
>
>                 Key: HDFS-10766
>                 URL: https://issues.apache.org/jira/browse/HDFS-10766
>             Project: Hadoop HDFS
>          Issue Type: Bug
>          Components: logging
>         Environment: HDP-2.4
>            Reporter: Karthik Palanisamy
>            Priority: Minor
>         Attachments: HDFS-10766-1.patch
>
>
> There was some error while creating requestShortCircuitFdsForRead and the exception is thrown when logging the message
> {quote}
> In this scenario, the actual exception was lost
> {quote}
> To get the actual exception message it needs to be handled properly.
> 2016-07-25 13:11:54,323 ERROR datanode.DataNode (DataXceiver.java:run(278)) - nyc2aggr04.nyc7.pubmatic.com:50010:DataXceiver error processing REQUEST_SHORT_CIRCUIT_FDS operation src: unix:/var/lib/hadoop-hdfs/dn_socket dst: <local> 
> org.apache.hadoop.fs.InvalidRequestException: there is no shared memory segment registered with shmId 0773fa8b13b4643cb5be98893af5a873
> at org.apache.hadoop.hdfs.server.datanode.ShortCircuitRegistry.unregisterSlot(ShortCircuitRegistry.java:371) 
> at org.apache.hadoop.hdfs.server.datanode.DataXceiver.requestShortCircuitFds(DataXceiver.java:364) 
> at org.apache.hadoop.hdfs.protocol.datatransfer.Receiver.opRequestShortCircuitFds(Receiver.java:187) 
> at org.apache.hadoop.hdfs.protocol.datatransfer.Receiver.processOp(Receiver.java:89) 
> at org.apache.hadoop.hdfs.server.datanode.DataXceiver.run(DataXceiver.java:251) 
> at java.lang.Thread.run(Thread.java:745) 



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