Sailesh Mukil has posted comments on this change.

Change subject: IMPALA-5331: Use new libHDFS API to address "Unknown Error 255"
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Patch Set 3:

> any way we can test this?

I don't think there is a deterministic way to do so. The way libHDFS retrieves 
exception information is by making a JNI call with a 'jException' object. It 
looks like this case can be hit only if the JNI call to retrieve exception 
information, fails.

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Gerrit-MessageType: comment
Gerrit-Change-Id: I181e316ed63b70b94d4f7a7557d398a931bb171d
Gerrit-PatchSet: 3
Gerrit-Project: Impala-ASF
Gerrit-Branch: master
Gerrit-Owner: Sailesh Mukil <[email protected]>
Gerrit-Reviewer: Henry Robinson <[email protected]>
Gerrit-Reviewer: Matthew Jacobs <[email protected]>
Gerrit-Reviewer: Sailesh Mukil <[email protected]>
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