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https://issues.apache.org/jira/browse/HADOOP-13158?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15286252#comment-15286252
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Steve Loughran commented on HADOOP-13158:
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Chris, we saw this at the same time, I suspect. I've fixed this as part of
HADOOP-13130 patch 005. If you could review that...
> S3AFileSystem#toString might throw NullPointerException due to null cannedACL.
> ------------------------------------------------------------------------------
>
> Key: HADOOP-13158
> URL: https://issues.apache.org/jira/browse/HADOOP-13158
> Project: Hadoop Common
> Issue Type: Bug
> Components: fs/s3
> Reporter: Chris Nauroth
> Assignee: Chris Nauroth
> Attachments: HADOOP-13158.001.patch
>
>
> The {{cannedACL}} field of {{S3AFileSystem}} can be {{null}}. The
> {{toString}} implementation has an unguarded call to
> {{cannedACL.toString()}}, so there is a risk of {{NullPointerException}}.
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