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https://issues.apache.org/jira/browse/DRILL-1740?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14220202#comment-14220202
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Deneche A. Hakim commented on DRILL-1740:
-----------------------------------------
The following issue could also have the same causes:
DRILL-1373
The main problem is that when a query throws an exception, the rest service
doesn't handle it and displays the generic "HTTP 500" webpage.
> Web UI returns HTTP 500 with no explanation
> -------------------------------------------
>
> Key: DRILL-1740
> URL: https://issues.apache.org/jira/browse/DRILL-1740
> Project: Apache Drill
> Issue Type: Bug
> Reporter: Tomer Shiran
> Fix For: DRILL-1404
>
>
> When submitting a SQL query through the Web UI I get this error with no
> explanation on how to troubleshoot. I'm not sure whether the Web UI query
> tool is broken - it may be, as I am able to submit the same query through
> sqlline (Drill is in distributed mode, so it's the same drillbit). There has
> to be an actionable explanation/error message or at least a pointer to the
> relevant log file.
> HTTP ERROR 500
> Problem accessing /query. Reason:
> Request failed.
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