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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 Fri, 19 Nov 2010 17:58:19 GMT

    [ https://issues.apache.org/jira/browse/HADOOP-6762?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12933889#action_12933889
] 

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

the javadoc warnings are not in any files I touched.  The warnings in tr

-----------

  [javadoc] Loading source files for package org.apache.hadoop.contrib.failmon...  [javadoc]
Constructing Javadoc information...  [javadoc] /data/users/srash/apache/hadoop-common/src/java/org/apache/hadoop/security/SecurityUtil.java:39:
warning: sun.security.jgss.krb5.Krb5Util is Sun proprietary API and may
 be removed in a future release
  [javadoc] import sun.security.jgss.krb5.Krb5Util;  [javadoc]                           
  ^  [javadoc] /data/users/srash/apache/hadoop-common/src/java/org/apache/hadoop/security/SecurityUtil.java:40:
warning: sun.security.krb5.Credentials is Sun proprietary API and may b
e removed in a future release
  [javadoc] import sun.security.krb5.Credentials;  [javadoc]                         ^
  [javadoc] /data/users/srash/apache/hadoop-common/src/java/org/apache/hadoop/security/SecurityUtil.java:41:
warning: sun.security.krb5.PrincipalName is Sun proprietary API and may be removed in a future
release
  [javadoc] import sun.security.krb5.PrincipalName;  [javadoc]                         ^
  [javadoc] /data/users/srash/apache/hadoop-common/src/java/org/apache/hadoop/security/KerberosName.java:31:
warning: sun.security.krb5.Config is Sun proprietary API and may be rem
oved in a future release
  [javadoc] import sun.security.krb5.Config;  [javadoc]                         ^
  [javadoc] /data/users/srash/apache/hadoop-common/src/java/org/apache/hadoop/security/KerberosName.java:32:
warning: sun.security.krb5.KrbException is Sun proprietary API and may 
be removed in a future release
  [javadoc] import sun.security.krb5.KrbException;  [javadoc]                         ^
  [javadoc] /data/users/srash/apache/hadoop-common/src/java/org/apache/hadoop/security/KerberosName.java:81:
warning: sun.security.krb5.Config is Sun proprietary API and may be rem
oved in a future release
  [javadoc]   private static Config kerbConf;  [javadoc]                  ^
  [javadoc] ExcludePrivateAnnotationsStandardDoclet
  [javadoc] Standard Doclet version 1.6.0_21
  [javadoc] Building tree for all the packages and classes...  [javadoc] Building index for
all the packages and classes...
  [javadoc] Building index for all classes...
  [javadoc] Generating /data/users/srash/apache/hadoop-common/build/docs/api/stylesheet.css...
  [javadoc] 6 warnings


> 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-6762-10.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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