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https://issues.apache.org/jira/browse/HDFS-8101?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14487656#comment-14487656
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Hudson commented on HDFS-8101:
------------------------------
FAILURE: Integrated in Hadoop-trunk-Commit #7546 (See
[https://builds.apache.org/job/Hadoop-trunk-Commit/7546/])
HDFS-8101. DFSClient use of non-constant DFSConfigKeys pulls in WebHDFS classes
at runtime. Contributed by Sean Busbey. (atm: rev
3fe61e0bb0d025a6acbb754027f73f3084b2f4d1)
*
hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/DFSConfigKeys.java
*
hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/TestDFSConfigKeys.java
* hadoop-hdfs-project/hadoop-hdfs/CHANGES.txt
> DFSClient use of non-constant DFSConfigKeys pulls in WebHDFS classes at
> runtime
> -------------------------------------------------------------------------------
>
> Key: HDFS-8101
> URL: https://issues.apache.org/jira/browse/HDFS-8101
> Project: Hadoop HDFS
> Issue Type: Improvement
> Components: hdfs-client
> Affects Versions: 2.7.0
> Reporter: Sean Busbey
> Assignee: Sean Busbey
> Priority: Minor
> Fix For: 2.8.0
>
> Attachments: HDFS-8101.1.patch.txt
>
>
> Previously, all references to DFSConfigKeys in DFSClient were compile time
> constants which meant that normal users of DFSClient wouldn't resolve
> DFSConfigKeys at run time. As of HDFS-7718, DFSClient has a reference to a
> member of DFSConfigKeys that isn't compile time constant
> (DFS_CLIENT_KEY_PROVIDER_CACHE_EXPIRY_DEFAULT).
> Since the class must be resolved now, this particular member
> {code}
> public static final String DFS_WEBHDFS_AUTHENTICATION_FILTER_DEFAULT =
> AuthFilter.class.getName();
> {code}
> means that javax.servlet.Filter needs to be on the classpath.
> javax-servlet-api is one of the properly listed dependencies for HDFS,
> however if we replace {{AuthFilter.class.getName()}} with the equivalent
> String literal then downstream folks can avoid including it while maintaining
> compatibility.
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