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https://reviews.apache.org/r/57686/
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Review request for Ambari and Alejandro Fernandez.
Bugs: AMBARI-20472
https://issues.apache.org/jira/browse/AMBARI-20472
Repository: ambari
Description
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MapRed HistoryServer start logic (implemented in yarn.py) creates various dirs
in HDFS. The dir creation only runs thru when WEBHDFS is enabled. When WEBHDFS
is disabled, HdfsResource calls bailed with NPE as the following one.
Creating: Resource [source=null, target=/app-logs, type=directory,
action=create, owner=yarn, group=hadoop, mode=777, recursiveChown=false,
recursiveChmod=true, changePermissionforParents=false, manageIfExists=false]
Exception occurred, Reason: null
java.lang.NullPointerException
at org.apache.hadoop.fs.FileSystem.fixRelativePart(FileSystem.java:2211)
at
org.apache.hadoop.hdfs.DistributedFileSystem.getFileStatus(DistributedFileSystem.java:1300)
at org.apache.hadoop.fs.FileSystem.exists(FileSystem.java:1426)
at org.apache.ambari.fast_hdfs_resource.Runner.main(Runner.java:80)
Diffs
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contrib/fast-hdfs-resource/src/main/java/org/apache/ambari/fast_hdfs_resource/Runner.java
e210876
Diff: https://reviews.apache.org/r/57686/diff/1/
Testing
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build fast-hdfs-resource jar, patch a trunk cluster with the new jar, verify
the dirs , such as /mapred, are created when WEBHDFS is disabled.
Thanks,
Di Li
