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https://issues.apache.org/jira/browse/HADOOP-13323?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15412143#comment-15412143
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Chen Liang commented on HADOOP-13323:
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Thanks for the reply [~ste...@apache.org] ! Actually never mind, I was working
on HADOOP-13439 which tries to fix that test and I figured it out later on.
> Downgrade stack trace on FS load from Warn to debug
> ---------------------------------------------------
>
> Key: HADOOP-13323
> URL: https://issues.apache.org/jira/browse/HADOOP-13323
> Project: Hadoop Common
> Issue Type: Improvement
> Components: fs
> Affects Versions: 2.7.3
> Reporter: Steve Loughran
> Assignee: Steve Loughran
> Priority: Minor
> Attachments: HADOOP-13323-branch-2-001.patch
>
>
> HADOOP-12636 catches exceptions on FS creation, but prints a stack trace @
> warn every time..this is noisy and irrelevant if the installation doesn't
> need connectivity to a specific filesystem or object store.
> I propose: only printing the toString values of the exception chain @ warn;
> the full stack comes out at debug.
> We could some more tuning:
> * have a specific log for this exception, which allows installations to turn
> even the warnings off.
> * add a link to a wiki page listing the dependencies of the shipped
> filesystems
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