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From "Bill Havanki (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (ACCUMULO-2227) Concurrent randomwalk fails when namenode dies after bulk import step
Date Wed, 22 Jan 2014 18:11:25 GMT

    [ https://issues.apache.org/jira/browse/ACCUMULO-2227?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13878928#comment-13878928
] 

Bill Havanki commented on ACCUMULO-2227:
----------------------------------------

Works for me. Such a note will cover this and ACCUMULO-2228.

> Concurrent randomwalk fails when namenode dies after bulk import step
> ---------------------------------------------------------------------
>
>                 Key: ACCUMULO-2227
>                 URL: https://issues.apache.org/jira/browse/ACCUMULO-2227
>             Project: Accumulo
>          Issue Type: Bug
>          Components: test
>    Affects Versions: 1.4.4
>            Reporter: Bill Havanki
>              Labels: ha, randomwalk, test
>
> Running Concurrent randomwalk under HDFS HA, if the active namenode is killed:
> {noformat}
> 20 12:27:51,119 [retry.RetryInvocationHandler] WARN : Exception while invoking class
org.apache.hadoop.hdfs.protocolPB.ClientNamenodeProtocolTranslatorPB.delete. Not retrying
because the invoked method is not idempotent, and unable to determine whether it was invoked
> java.io.IOException: Failed on local exception: java.io.IOException: Response is null.;
Host Details : local host is: "slave.domain.com/10.20.200.113"; destination host is: "namenode.domain.com":8020;
> ...
>  at org.apache.hadoop.hdfs.DFSClient.delete(DFSClient.java:1487)
> at org.apache.hadoop.hdfs.DistributedFileSystem.delete(DistributedFileSystem.java:355)
> at org.apache.accumulo.server.test.randomwalk.concurrent.BulkImport.visit(BulkImport.java:140)
> ...
> Caused by: java.io.IOException: Response is null.
> at org.apache.hadoop.ipc.Client$Connection.receiveResponse(Client.java:952)
> at org.apache.hadoop.ipc.Client$Connection.run(Client.java:847)
> {noformat}
> This arises from an HDFS path delete call that cleans up from the bulk import. The test
should be resilient here (and when the paths are made earlier in the test) so that the test
can continue once failover has completed.



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