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https://issues.apache.org/jira/browse/HADOOP-12567?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15009862#comment-15009862
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Chris Nauroth commented on HADOOP-12567:
----------------------------------------
The test failures are unrelated, and I cannot reproduce locally.
{{TestDecayRpcScheduler}}, like many of the RPC tests, is known to be racy.
{{TestSymlinkLocalFSFileContext}} failed for a very unusual reason that appears
to be specific to the environment on that Jenkins host. (See below.) I'll
commit this later today.
{code}
Tests run: 63, Failures: 0, Errors: 1, Skipped: 3, Time elapsed: 2.869 sec <<<
FAILURE! - in org.apache.hadoop.fs.TestSymlinkLocalFSFileContext
testStatLinkToDir(org.apache.hadoop.fs.TestSymlinkLocalFSFileContext) Time
elapsed: 0.033 sec <<< ERROR!
java.io.IOException: Unexpected stat output: stat: error while loading shared
libraries: libdl.so.2: failed to map segment from shared object: Permission
denied
at org.apache.hadoop.fs.Stat.parseExecResult(Stat.java:169)
{code}
> NPE in SaslRpcServer
> --------------------
>
> Key: HADOOP-12567
> URL: https://issues.apache.org/jira/browse/HADOOP-12567
> Project: Hadoop Common
> Issue Type: Task
> Affects Versions: 2.7.0, 2.7.1
> Reporter: Sergey Shelukhin
> Assignee: Sergey Shelukhin
> Attachments: HADOOP-12567.01.patch, HADOOP-12567.patch
>
>
> {noformat}
> if (LOG.isDebugEnabled()) {
> String username =
> getIdentifier(authzid, secretManager).getUser().getUserName();
> LOG.debug("SASL server DIGEST-MD5 callback: setting "
> + "canonicalized client ID: " + username);
> }
> {noformat}
> Looking at identifier implementations, e.g. AbstractDelegationTokenIdentifier
> (and others), I can see that getUser method can return null. If debug logging
> is enabled, this NPEs.
> If getUser is not expected to return NULL, it should either be checked and
> erred upon better here, or the error should be allowed to happen where it
> would otherwise happen, not in some debug log path.
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