[
https://issues.apache.org/jira/browse/HDFS-8627?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14608095#comment-14608095
]
Hudson commented on HDFS-8627:
------------------------------
FAILURE: Integrated in Hadoop-trunk-Commit #8093 (See
[https://builds.apache.org/job/Hadoop-trunk-Commit/8093/])
HDFS-8627. NPE thrown if unable to fetch token from Namenode (Contributed by
J.Andreina) (vinayakumarb: rev 7ba5bbac02b688f68a8d23671a1e869234b4cebe)
*
hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/tools/TestDelegationTokenFetcher.java
*
hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/tools/DelegationTokenFetcher.java
* hadoop-hdfs-project/hadoop-hdfs/CHANGES.txt
> NPE thrown if unable to fetch token from Namenode
> -------------------------------------------------
>
> Key: HDFS-8627
> URL: https://issues.apache.org/jira/browse/HDFS-8627
> Project: Hadoop HDFS
> Issue Type: Bug
> Reporter: J.Andreina
> Assignee: J.Andreina
> Fix For: 3.0.0
>
> Attachments: HDFS-8627.1.patch, HDFS-8627.2.patch
>
>
> DelegationTokenFetcher#saveDelegationToken
> Missed to check if token is null.
> {code}
> Token<?> token = fs.getDelegationToken(renewer);
> Credentials cred = new Credentials();
> cred.addToken(token.getKind(), token);
> {code}
> {noformat}
> XXXXXXXXXXXXXXXXXX:~/hadoop/namenode/bin> ./hdfs fetchdt --renewer Rex
> /home/REX/file1
> Exception in thread "main" java.lang.NullPointerException
> at
> org.apache.hadoop.hdfs.tools.DelegationTokenFetcher.saveDelegationToken(DelegationTokenFetcher.java:181)
> at
> org.apache.hadoop.hdfs.tools.DelegationTokenFetcher$1.run(DelegationTokenFetcher.java:126)
> at
> java.security.AccessController.doPrivileged(AccessController.java:314)
> at javax.security.auth.Subject.doAs(Subject.java:572)
> at
> org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1666)
> at
> org.apache.hadoop.hdfs.tools.DelegationTokenFetcher.main(DelegationTokenFetcher.java:114)
> {noformat}
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