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From "Xiao Chen (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HADOOP-12901) Add warning log when KMSClientProvider cannot create a connection to the KMS server
Date Mon, 07 Mar 2016 22:04:40 GMT

    [ https://issues.apache.org/jira/browse/HADOOP-12901?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15183814#comment-15183814
] 

Xiao Chen commented on HADOOP-12901:
------------------------------------

Thanks Andrew for the prompt review and commit. :)

> Add warning log when KMSClientProvider cannot create a connection to the KMS server
> -----------------------------------------------------------------------------------
>
>                 Key: HADOOP-12901
>                 URL: https://issues.apache.org/jira/browse/HADOOP-12901
>             Project: Hadoop Common
>          Issue Type: Improvement
>            Reporter: Xiao Chen
>            Assignee: Xiao Chen
>            Priority: Minor
>             Fix For: 2.8.0
>
>         Attachments: HADOOP-12901.01.patch
>
>
> Currently when failed to connect, one can only see logs at debug level with a vague {{SocketTimeoutException}}.
(Luckily in the env I saw this, HADOOP-10015 was not present, so the last WARN log was printed.)
> {noformat}
> 2015-12-17 12:28:01,410 DEBUG org.apache.hadoop.security.UserGroupInformation: PrivilegedAction
as:hdfs (auth:SIMPLE) from:org.apache.hadoop.crypto.key.kms.KMSClientProvider.createConnection(KMSClientProvider.java:477)

> 2015-12-17 12:28:01,469 WARN org.apache.hadoop.security.UserGroupInformation: PriviledgedActionException
as:hdfs (auth:SIMPLE) cause:java.net.SocketTimeoutException: connect timed out 
> {noformat}
> The issue was then fixed by opening up the KMS server port.
> This jira is to propose we add specific loggings in this case, to help user easily identify
the problem.



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