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From "Hudson (Commented) (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HADOOP-8068) HA: void methods can swallow exceptions when going through failover path
Date Thu, 16 Feb 2012 12:46:00 GMT

    [ https://issues.apache.org/jira/browse/HADOOP-8068?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13209328#comment-13209328
] 

Hudson commented on HADOOP-8068:
--------------------------------

Integrated in Hadoop-Hdfs-HAbranch-build #79 (See [https://builds.apache.org/job/Hadoop-Hdfs-HAbranch-build/79/])
    HADOOP-8068. void methods can swallow exceptions when going through failover path. Contributed
by Todd Lipcon. (Revision 1244628)

     Result = FAILURE
todd : http://svn.apache.org/viewcvs.cgi/?root=Apache-SVN&view=rev&rev=1244628
Files : 
* /hadoop/common/branches/HDFS-1623/hadoop-common-project/hadoop-common/CHANGES.HDFS-1623.txt
* /hadoop/common/branches/HDFS-1623/hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/io/retry/RetryInvocationHandler.java
* /hadoop/common/branches/HDFS-1623/hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/io/retry/RetryPolicies.java
* /hadoop/common/branches/HDFS-1623/hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/io/retry/RetryPolicy.java
* /hadoop/common/branches/HDFS-1623/hadoop-common-project/hadoop-common/src/test/java/org/apache/hadoop/io/retry/TestFailoverProxy.java
* /hadoop/common/branches/HDFS-1623/hadoop-common-project/hadoop-common/src/test/java/org/apache/hadoop/io/retry/TestRetryProxy.java
* /hadoop/common/branches/HDFS-1623/hadoop-common-project/hadoop-common/src/test/java/org/apache/hadoop/io/retry/UnreliableImplementation.java
* /hadoop/common/branches/HDFS-1623/hadoop-common-project/hadoop-common/src/test/java/org/apache/hadoop/io/retry/UnreliableInterface.java

                
> HA: void methods can swallow exceptions when going through failover path
> ------------------------------------------------------------------------
>
>                 Key: HADOOP-8068
>                 URL: https://issues.apache.org/jira/browse/HADOOP-8068
>             Project: Hadoop Common
>          Issue Type: Sub-task
>          Components: ha, ipc
>    Affects Versions: HA Branch (HDFS-1623)
>            Reporter: Todd Lipcon
>            Assignee: Todd Lipcon
>            Priority: Blocker
>             Fix For: HA Branch (HDFS-1623)
>
>         Attachments: hadoop-8068.txt
>
>
> While running through scale testing, we saw an issue where clients were getting LeaseExpiredExceptions.
We eventually tracked it down to the fact that some {{create}} calls had timed out (having
been sent to a NN just before it crashed) but the resulting exception was swallowed by the
retry policy code paths.

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