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From "Hadoop QA (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HDFS-8068) Do not retry rpc calls If the proxy contains unresolved address
Date Tue, 07 Apr 2015 00:01:52 GMT

    [ https://issues.apache.org/jira/browse/HDFS-8068?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14482238#comment-14482238
] 

Hadoop QA commented on HDFS-8068:
---------------------------------

{color:red}-1 overall{color}.  Here are the results of testing the latest attachment 
  http://issues.apache.org/jira/secure/attachment/12723430/HDFS-8068.v1.patch
  against trunk revision 28bebc8.

    {color:green}+1 @author{color}.  The patch does not contain any @author tags.

    {color:green}+1 tests included{color}.  The patch appears to include 1 new or modified
test files.

    {color:green}+1 javac{color}.  The applied patch does not increase the total number of
javac compiler warnings.

    {color:green}+1 javadoc{color}.  There were no new javadoc warning messages.

    {color:green}+1 eclipse:eclipse{color}.  The patch built with eclipse:eclipse.

    {color:green}+1 findbugs{color}.  The patch does not introduce any new Findbugs (version
2.0.3) warnings.

    {color:green}+1 release audit{color}.  The applied patch does not increase the total number
of release audit warnings.

    {color:red}-1 core tests{color}.  The patch failed these unit tests in hadoop-hdfs-project/hadoop-hdfs:

                  org.apache.hadoop.hdfs.web.TestWebHdfsFileSystemContract

Test results: https://builds.apache.org/job/PreCommit-HDFS-Build/10183//testReport/
Console output: https://builds.apache.org/job/PreCommit-HDFS-Build/10183//console

This message is automatically generated.

> Do not retry rpc calls If the proxy contains unresolved address
> ---------------------------------------------------------------
>
>                 Key: HDFS-8068
>                 URL: https://issues.apache.org/jira/browse/HDFS-8068
>             Project: Hadoop HDFS
>          Issue Type: Bug
>            Reporter: Kihwal Lee
>            Assignee: Kihwal Lee
>         Attachments: HDFS-8068.v1.patch
>
>
> When the InetSocketAddress object happens to be unresolvable (e.g. due to transient DNS
issue), the rpc proxy object will not be usable since the client will throw UnknownHostException
when a Connection object is created. If FailoverOnNetworkExceptionRetry is used as in the
standard HA failover proxy, the call will be retried, but this will never recover.  Instead,
the validity of address must be checked on pxoy creation and throw if it is invalid.



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