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https://issues.apache.org/jira/browse/DRILL-1378?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14336949#comment-14336949
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Parth Chandra commented on DRILL-1378:
--------------------------------------
Patch addresses cancellation of query and returning to the prompt. The patch
does not address updating Calcite-avatica to handle the cancellation better. It
also does not add the ability to quit sqlline using Ctrl-C
> Using CTRL-C to cancel a query and exit SQLLINE cancels query but causes
> SQLLINE shell to hang
> ----------------------------------------------------------------------------------------------
>
> Key: DRILL-1378
> URL: https://issues.apache.org/jira/browse/DRILL-1378
> Project: Apache Drill
> Issue Type: Bug
> Components: Client - CLI
> Affects Versions: 0.4.0
> Environment: MapR v3.1.1, RHEL 6.5
> Reporter: Michael England
> Assignee: Parth Chandra
> Priority: Blocker
> Labels: cancel, ctrl-c, hang, query, sqlline
> Fix For: 0.9.0
>
> Attachments: DRILL-1378.1.patch.diff
>
>
> When running a query (in this case a Drill query over a large Hive table),
> pressing CTRL+C to cancel a query and exit the shell causes a cancellation
> message in sqlline.log but causes the SQLLINE shell to hang. CTRL-Z then
> needs to be pressed and the SQLLINE process needs to be killed manually. A
> CTRL+C keyboard interrupt should cancel the query and provide a new empty
> query line in the shell. A further CTRL-C keyboard press should exit the
> SQLLINE shell.
> sqlline.log cancellation entry:
> 2014-09-05 14:16:13,852 [SIGINT handler] DEBUG
> o.a.drill.exec.client.DrillClient - Cancelling query
> b0b36fa7-051e-484e-bb42-f57613401834
> 2014-09-05 14:16:13,858 [Client-1] DEBUG org.apache.drill.jdbc.DrillResultSet
> - Result arrived QueryResultBatch [header=query_state: CANCELED
> query_id {
> part1: -5714100739066935218
> part2: -4953126752676210636
> }
> is_last_chunk: true
> , data=null]
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