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Date: Wed, 22 Aug 2012 04:18:38 +1100 (NCT)
From: "Trevor Robinson (JIRA)" <jira@apache.org>
To: common-issues@hadoop.apache.org
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Subject: [jira] [Commented] (HADOOP-8713) TestRPCCompatibility fails
 intermittently with JDK7
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    [ https://issues.apache.org/jira/browse/HADOOP-8713?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13438875#comment-13438875 ] 

Trevor Robinson commented on HADOOP-8713:
-----------------------------------------

Sure, I guess it's better to start with a known condition.
                
> TestRPCCompatibility fails intermittently with JDK7
> ---------------------------------------------------
>
>                 Key: HADOOP-8713
>                 URL: https://issues.apache.org/jira/browse/HADOOP-8713
>             Project: Hadoop Common
>          Issue Type: Bug
>          Components: test
>    Affects Versions: 2.2.0-alpha
>         Environment: Apache Maven 3.0.4
> Maven home: /usr/share/maven
> Java version: 1.7.0_04, vendor: Oracle Corporation
> Java home: /usr/lib/jvm/jdk1.7.0_04/jre
> Default locale: en_US, platform encoding: ISO-8859-1
> OS name: "linux", version: "3.2.0-25-generic", arch: "amd64", family: "unix"
>            Reporter: Trevor Robinson
>            Assignee: Trevor Robinson
>              Labels: java7
>         Attachments: HADOOP-8713.patch, HADOOP-8713.patch
>
>
> TestRPCCompatibility can fail intermittently with errors like the following when tests are not run in declaration order:
> {noformat}
> testVersion2ClientVersion1Server(org.apache.hadoop.ipc.TestRPCCompatibility): expected:<3> but was:<-3>
> {noformat}
> Moving the reset of the ProtocolSignature cache from ad-hoc usage in testVersion2ClientVersion2Server to tearDown fixes the issue.

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