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https://issues.apache.org/jira/browse/HDFS-7101?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16435169#comment-16435169
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Akira Ajisaka edited comment on HDFS-7101 at 4/12/18 8:50 AM:
--------------------------------------------------------------
Committed this to trunk, branch-3.1, branch-2, and branch-2.9. Thanks
[~rsk13th] and [[email protected]] for the contribution.
was (Author: ajisakaa):
Committed this to trunk. Thanks [~rsk13th] and [[email protected]] for the
contribution.
> Potential null dereference in DFSck#doWork()
> --------------------------------------------
>
> Key: HDFS-7101
> URL: https://issues.apache.org/jira/browse/HDFS-7101
> Project: Hadoop HDFS
> Issue Type: Bug
> Affects Versions: 2.5.1
> Reporter: Ted Yu
> Assignee: skrho
> Priority: Minor
> Labels: BB2015-05-TBR
> Fix For: 2.10.0, 3.2.0, 3.1.1, 2.9.2
>
> Attachments: HDFS-7101.v1.patch, HDFS-7101_001.patch
>
>
> {code}
> String lastLine = null;
> int errCode = -1;
> try {
> while ((line = input.readLine()) != null) {
> ...
> if (lastLine.endsWith(NamenodeFsck.HEALTHY_STATUS)) {
> errCode = 0;
> {code}
> If the input stream is empty, lastLine is kept null, leading to NPE.
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