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From "Naganarasimha G R (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (YARN-6517) Fix warnings from Spotbugs in hadoop-yarn-common
Date Thu, 15 Jun 2017 00:37:11 GMT

    [ https://issues.apache.org/jira/browse/YARN-6517?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16049858#comment-16049858

Naganarasimha G R commented on YARN-6517:

[~cheersyang], Bad on my part, Findbugs issue was still existent on the last patch can you
have a look at it ? though the build is not available you can refer this [link|https://builds.apache.org/job/PreCommit-YARN-Build/16184/artifact/patchprocess/branch-findbugs-hadoop-yarn-project_hadoop-yarn_hadoop-yarn-common-warnings.html#NP_NULL_ON_SOME_PATH_FROM_RETURN_VALUE]
from YARN-5006 
i think we can do something like below to avoid 
      File[] filesList ;
      if(containerLogDir == null ||
          (filesList = containerLogDir.listFiles()) == null) {
        return new HashSet<>(0);
      Set<File> candidates =
          new HashSet<File>(Arrays.asList(filesList));
if you still have problems then we can add it to the exception list.

> Fix warnings from Spotbugs in hadoop-yarn-common
> ------------------------------------------------
>                 Key: YARN-6517
>                 URL: https://issues.apache.org/jira/browse/YARN-6517
>             Project: Hadoop YARN
>          Issue Type: Bug
>            Reporter: Weiwei Yang
>            Assignee: Weiwei Yang
>              Labels: findbugs
>             Fix For: 2.9.0, 3.0.0-alpha4
>         Attachments: YARN-6517.001.patch, YARN-6517.002.patch
> There are 2 findbugs warnings in hadoop-yarn-common project since switched to spotbugs,
> # Possible null pointer dereference in org.apache.hadoop.yarn.logaggregation.AggregatedLogFormat$LogValue.getPendingLogFilesToUpload(File)
due to return value of called method
> # 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]

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