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https://issues.apache.org/jira/browse/HADOOP-15860?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16730004#comment-16730004
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Sean Mackrory commented on HADOOP-15860:
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So the issue isn't that path is null, the issue is that path.length == 0. path
references a valid String object, but it's trying to do .charAt(-1), which is
invalid. I suspect that what's happening is that you're hitting root, at which
point it's an empty string. Maybe you can just replace the original null check
with "while (!path.isRoot())". path.getParent() is null at that point, but we
won't even get that far if we have bounds checking problems. We also need to
make sure you can run the ABFS tests.
> ABFS: Throw IllegalArgumentException when Directory/File name ends with a
> period(.)
> -----------------------------------------------------------------------------------
>
> Key: HADOOP-15860
> URL: https://issues.apache.org/jira/browse/HADOOP-15860
> Project: Hadoop Common
> Issue Type: Sub-task
> Components: fs/adl
> Affects Versions: 3.2.0
> Reporter: Sean Mackrory
> Assignee: Shweta
> Priority: Major
> Attachments: HADOOP-15860.001.patch, HADOOP-15860.002.patch,
> HADOOP-15860.003.patch, HADOOP-15860.004.patch, HADOOP-15860.005.patch,
> trailing-periods.patch
>
>
> If you create a directory with a trailing period (e.g. '/test.') the period
> is silently dropped, and will be listed as simply '/test'. '/test.test'
> appears to work just fine.
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