[HADOOP-14400] Fix warnings from spotbugs in hadoop-tools

• Type: Bug
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 3.0.0-alpha4, 2.10.1
• Component/s: tools
• Labels: findbugs
• Target Version/s: 3.0.0-alpha4
• Hadoop Flags: Reviewed
• Assignee: Weiwei Yang
• Reporter: Weiwei Yang
• Created: 09/May/17 14:11
• Updated: 11/Aug/20 05:27
• Resolved: 10/May/17 10:58

Description

Fix 4 warnings in hadoop-tools project since moved to spotbugs.

1. Return value of new org.apache.hadoop.tools.rumen.datatypes.DefaultDataType(String) ignored, but method has no side effect At MapReduceJobPropertiesParser.java
2. org.apache.hadoop.mapred.gridmix.InputStriper$1.compare(Map$Entry, Map$Entry) incorrectly handles double value
3. Useless object stored in variable keysToUpdateAsFolder of method org.apache.hadoop.fs.azure.NativeAzureFileSystem.mkdirs(Path, FsPermission, boolean) At NativeAzureFileSystem.java
4. org.apache.hadoop.yarn.sls.SLSRunner.simulateInfoMap is a mutable collection At SLSRunner.java

Issue Links

• is depended upon by: HADOOP-17202 Fix findbugs warnings in hadoop-tools on branch-2.10
• relates to: HADOOP-14336 Cleanup findbugs warnings found by Spotbugs