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https://issues.apache.org/jira/browse/HADOOP-10015?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13946531#comment-13946531
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Hudson commented on HADOOP-10015:
---------------------------------
FAILURE: Integrated in Hadoop-Mapreduce-trunk #1737 (See
[https://builds.apache.org/job/Hadoop-Mapreduce-trunk/1737/])
HADOOP-10015. UserGroupInformation prints out excessive warnings. Contributed
by Nicolas Liochon (szetszwo:
http://svn.apache.org/viewcvs.cgi/?root=Apache-SVN&view=rev&rev=1580977)
* /hadoop/common/trunk/hadoop-common-project/hadoop-common/CHANGES.txt
*
/hadoop/common/trunk/hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/security/UserGroupInformation.java
> UserGroupInformation prints out excessive ERROR warnings
> --------------------------------------------------------
>
> Key: HADOOP-10015
> URL: https://issues.apache.org/jira/browse/HADOOP-10015
> Project: Hadoop Common
> Issue Type: Bug
> Components: security
> Affects Versions: 3.0.0
> Reporter: Haohui Mai
> Assignee: Nicolas Liochon
> Priority: Minor
> Fix For: 2.4.0
>
> Attachments: 10015.v3.patch, 10015.v4.patch, 10015.v5.patch,
> 10015.v6.patch, HADOOP-10015.000.patch, HADOOP-10015.001.patch,
> HADOOP-10015.002.patch
>
>
> In UserGroupInformation::doAs(), it prints out a log at ERROR level whenever
> it catches an exception.
> However, it prints benign warnings in the following paradigm:
> {noformat}
> try {
> ugi.doAs(new PrivilegedExceptionAction<FileStatus>() {
> @Override
> public FileStatus run() throws Exception {
> return fs.getFileStatus(nonExist);
> }
> });
> } catch (FileNotFoundException e) {
> }
> {noformat}
> For example, FileSystem#exists() follows this paradigm. Distcp uses this
> paradigm too. The exception is expected therefore there should be no ERROR
> logs printed in the namenode logs.
> Currently, the user quickly finds out that the namenode log is quickly filled
> by _benign_ ERROR logs when he or she runs distcp in secure set up. This
> behavior confuses the operators.
> This jira proposes to move the log to DEBUG level.
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