Chesnay Schepler created FLINK-4845:
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Summary: Fix Job Exceptions page
Key: FLINK-4845
URL: https://issues.apache.org/jira/browse/FLINK-4845
Project: Flink
Issue Type: Bug
Components: Webfrontend
Affects Versions: 1.2.0
Reporter: Chesnay Schepler
Fix For: 1.2.0
The job exceptions page in the WebFrontend is currently broken, displaying
(null) for every task even if no exception has occurred.
The JobExceptionsHandlers checks whether an exception has occurred, and thus
displayed, by checking whether the rootException is null. This worked until
recently since we worked directly on Throwables, this was jhowever changed to
stringified version of the exceptions. This had the side-effect that the
exception is now never null, but "(null)", leading the handler to believe that
an exception has occurred.
The checks should be changed to {code}!exception.equals("(null)"){code}
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