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From "sam rash (JIRA)" <j...@apache.org>
Subject [jira] Commented: (HADOOP-6762) exception while doing RPC I/O closes channel
Date Wed, 30 Jun 2010 17:57:51 GMT

    [ https://issues.apache.org/jira/browse/HADOOP-6762?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12883999#action_12883999
] 

sam rash commented on HADOOP-6762:
----------------------------------

the javadoc warnings do not appear to be from my patch
(and I see 6, not 1)

     [exec]   [javadoc] Constructing Javadoc information...
     [exec]   [javadoc] /grid/0/hudson/hudson-slave/workspace/Hadoop-Patch-h4.grid.sp2.yahoo.net/trunk/src/java/org/apache/hadoop/security/KerberosName.java:31:
warning: sun.securi
ty.krb5.Config is Sun proprietary API and may be removed in a future release
     [exec]   [javadoc] import sun.security.krb5.Config;
     [exec]   [javadoc]                         ^
     [exec]   [javadoc] /grid/0/hudson/hudson-slave/workspace/Hadoop-Patch-h4.grid.sp2.yahoo.net/trunk/src/java/org/apache/hadoop/security/KerberosName.java:32:
warning: sun.securi
ty.krb5.KrbException is Sun proprietary API and may be removed in a future release
     [exec]   [javadoc] import sun.security.krb5.KrbException;
     [exec]   [javadoc]                         ^
     [exec]   [javadoc] /grid/0/hudson/hudson-slave/workspace/Hadoop-Patch-h4.grid.sp2.yahoo.net/trunk/src/java/org/apache/hadoop/security/KerberosName.java:81:
warning: sun.securi
ty.krb5.Config is Sun proprietary API and may be removed in a future release
     [exec]   [javadoc]   private static Config kerbConf;
     [exec]   [javadoc]                  ^
     [exec]   [javadoc] /grid/0/hudson/hudson-slave/workspace/Hadoop-Patch-h4.grid.sp2.yahoo.net/trunk/src/java/org/apache/hadoop/security/SecurityUtil.java:33:
warning: sun.securi
ty.jgss.krb5.Krb5Util is Sun proprietary API and may be removed in a future release
     [exec]   [javadoc] import sun.security.jgss.krb5.Krb5Util;
     [exec]   [javadoc]                              ^
     [exec]   [javadoc] /grid/0/hudson/hudson-slave/workspace/Hadoop-Patch-h4.grid.sp2.yahoo.net/trunk/src/java/org/apache/hadoop/security/SecurityUtil.java:34:
warning: sun.securi
ty.krb5.Credentials is Sun proprietary API and may be removed in a future release
     [exec]   [javadoc] import sun.security.krb5.Credentials;
     [exec]   [javadoc]                         ^
     [exec]   [javadoc] /grid/0/hudson/hudson-slave/workspace/Hadoop-Patch-h4.grid.sp2.yahoo.net/trunk/src/java/org/apache/hadoop/security/SecurityUtil.java:35:
warning: sun.securi
ty.krb5.PrincipalName is Sun proprietary API and may be removed in a future release
     [exec]   [javadoc] import sun.security.krb5.PrincipalName;
     [exec]   [javadoc]                         ^
     [exec]   [javadoc] ExcludePrivateAnnotationsStandardDoclet
     [exec]   [javadoc] Standard Doclet version 1.6.0_11
     [exec]   [javadoc] Building tree for all the packages and classes...
     [exec]   [javadoc] Building index for all the packages and classes...
     [exec]   [javadoc] Building index for all classes...
     [exec]   [javadoc] Generating /grid/0/hudson/hudson-slave/workspace/Hadoop-Patch-h4.grid.sp2.yahoo.net/trunk/build/docs/api/stylesheet.css...
     [exec]   [javadoc] 6 warnings
     [exec] 


> exception while doing RPC I/O closes channel
> --------------------------------------------
>
>                 Key: HADOOP-6762
>                 URL: https://issues.apache.org/jira/browse/HADOOP-6762
>             Project: Hadoop Common
>          Issue Type: Bug
>    Affects Versions: 0.20.2
>            Reporter: sam rash
>            Assignee: sam rash
>         Attachments: hadoop-6762-1.txt, hadoop-6762-2.txt, hadoop-6762-3.txt, hadoop-6762-4.txt,
hadoop-6762-6.txt, hadoop-6762-7.txt, hadoop-6762-8.txt, hadoop-6762-9.txt
>
>
> If a single process creates two unique fileSystems to the same NN using FileSystem.newInstance(),
and one of them issues a close(), the leasechecker thread is interrupted.  This interrupt
races with the rpc namenode.renew() and can cause a ClosedByInterruptException.  This closes
the underlying channel and the other filesystem, sharing the connection will get errors.

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