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https://issues.apache.org/jira/browse/MAPREDUCE-7286?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Masatake Iwasaki resolved MAPREDUCE-7286.
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Fix Version/s: 2.10.1
Resolution: Fixed
Cherry-picking MAPREDUCE-6881 fixed this.
> Fix findbugs warnings in hadoop-mapreduce-project on branch-2.10
> ----------------------------------------------------------------
>
> Key: MAPREDUCE-7286
> URL: https://issues.apache.org/jira/browse/MAPREDUCE-7286
> Project: Hadoop Map/Reduce
> Issue Type: Bug
> Affects Versions: 2.10.0
> Reporter: Masatake Iwasaki
> Assignee: Masatake Iwasaki
> Priority: Minor
> Fix For: 2.10.1
>
>
> {noformat}
> $ find . -name findbugsXml.xml | xargs -n 1
> /opt/findbugs-3.0.1/bin/convertXmlToText -longBugCodes
> M D NP_NULL_ON_SOME_PATH_FROM_RETURN_VALUE NP: Possible null pointer
> dereference in org.apache.hadoop.examples.pi.Parser.parse(File, Map) due to
> return value of called method Dereferenced at Parser.java:[line 70]
> H P DM_BOXED_PRIMITIVE_FOR_COMPARE Bx: Primitive is boxed to call
> Long.compareTo(Long): use Long.compare(long, long) instead At
> JVMId.java:[line 101]
> M B ME_MUTABLE_ENUM_FIELD ME: org.apache.hadoop.mapred.Operation.jobACLNeeded
> field is public and mutable In Operation.java
> M B ME_MUTABLE_ENUM_FIELD ME: org.apache.hadoop.mapred.Operation.qACLNeeded
> field is public and mutable In Operation.java
> M D UC_USELESS_OBJECT UC: Useless object stored in variable paths of method
> org.apache.hadoop.mapreduce.v2.hs.HistoryFileManager$HistoryFileInfo.moveToDone()
> At HistoryFileManager.java:[line 416]
> M D NP_NULL_ON_SOME_PATH_FROM_RETURN_VALUE NP: Possible null pointer
> dereference in new
> org.apache.hadoop.mapred.LocalContainerLauncher(AppContext,
> TaskUmbilicalProtocol, ClassLoader) due to return value of called method
> Dereferenced at LocalContainerLauncher.java:[line 124]
> M D NP_NULL_ON_SOME_PATH_FROM_RETURN_VALUE NP: Possible null pointer
> dereference in
> org.apache.hadoop.mapred.LocalContainerLauncher$EventHandler.relocalize() due
> to return value of called method Dereferenced at
> LocalContainerLauncher.java:[line 524]
> M D NP_NULL_ON_SOME_PATH_FROM_RETURN_VALUE NP: Possible null pointer
> dereference in
> org.apache.hadoop.mapreduce.v2.app.MRAppMaster.isJobNamePatternMatch(JobConf,
> String) due to return value of called method Dereferenced at
> MRAppMaster.java:[line 560]
> {noformat}
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