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https://issues.apache.org/jira/browse/CASSANDRA-4177?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13258267#comment-13258267
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Jonathan Ellis commented on CASSANDRA-4177:
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Don't you get a "Caused by" later on in the stack trace with the original
approach?
> Little improvement on the messages of the exceptions thrown by ExternalClient
> -----------------------------------------------------------------------------
>
> Key: CASSANDRA-4177
> URL: https://issues.apache.org/jira/browse/CASSANDRA-4177
> Project: Cassandra
> Issue Type: Improvement
> Reporter: Michał Michalski
> Assignee: Michał Michalski
> Priority: Trivial
> Attachments: trunk-4177.txt
>
>
> After adding BulkRecordWriter (or actually ExternalClient) the ability to
> make use of authentication I've noticed that exceptions that are thrown on
> login failure are very misguiding - there's always a "Could not retrieve
> endpoint ranges" RuntimeException being thrown, no matter what really
> happens. This "hides" the real reason of all authentication problems. I've
> changed this line a bit, so all the messages are passed without any change,
> so now I get - for example - "AuthenticationException(why:Given password in
> password mode MD5 could not be validated for user operator)" or - in worst
> case - "Unexpected authentication problem", which is waaay more helpful, so I
> submit this trivial, but useful improvement.
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