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From "Xiao Chen (JIRA)" <j...@apache.org>
Subject [jira] [Created] (HADOOP-12901) Add warning log when KMSClientProvider cannot create a connection to the KMS server
Date Mon, 07 Mar 2016 19:53:40 GMT
Xiao Chen created HADOOP-12901:
----------------------------------

             Summary: 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


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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