[YARN-6517] Fix warnings from Spotbugs in hadoop-yarn-common

• Type: Bug
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 2.9.0, 3.0.0-alpha4
• Labels: findbugs
• Hadoop Flags: Reviewed
• Assignee: Weiwei Yang
• Reporter: Weiwei Yang
• Created: 24/Apr/17 07:44
• Updated: 26/Feb/20 05:29
• Resolved: 18/Jun/17 14:30

Description

There are 2 findbugs warnings in hadoop-yarn-common project since switched to spotbugs,

1. Possible null pointer dereference in org.apache.hadoop.yarn.logaggregation.AggregatedLogFormat$LogValue.getPendingLogFilesToUpload(File) due to return value of called method
2. Possible null pointer dereference in org.apache.hadoop.yarn.util.ProcfsBasedProcessTree.getProcessList() due to return value of called method

see more in https://builds.apache.org/job/PreCommit-HADOOP-Build/12157/artifact/patchprocess/branch-findbugs-hadoop-yarn-project_hadoop-yarn_hadoop-yarn-common-warnings.html

Issue Links

• is duplicated by: YARN-6512 Fix for FindBugs getProcessList() possible NPE
• is duplicated by: YARN-6513 Fix for FindBugs getPendingLogFilesToUpload() possible NPE
• relates to: HADOOP-14336 Cleanup findbugs warnings found by Spotbugs