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Posted to hdfs-issues@hadoop.apache.org by "skrho (JIRA)" <ji...@apache.org> on 2014/09/25 12:38:34 UTC

[jira] [Updated] (HDFS-7101) Potential null dereference in DFSck#doWork()

     [ https://issues.apache.org/jira/browse/HDFS-7101?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

skrho updated HDFS-7101:
------------------------
    Attachment: HDFS-7101_001.patch

> Potential null dereference in DFSck#doWork()
> --------------------------------------------
>
>                 Key: HDFS-7101
>                 URL: https://issues.apache.org/jira/browse/HDFS-7101
>             Project: Hadoop HDFS
>          Issue Type: Bug
>            Reporter: Ted Yu
>            Assignee: skrho
>            Priority: Minor
>         Attachments: 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 readLine() throws exception, lastLine may be null, leading to NPE.



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