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From "Karthik Palanisamy (JIRA)" <j...@apache.org>
Subject [jira] [Created] (HDFS-10766) Request short circuit access failed
Date Tue, 16 Aug 2016 11:55:21 GMT
Karthik Palanisamy created HDFS-10766:
-----------------------------------------

             Summary: 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


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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