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Posted to issues@drill.apache.org by "Sean Hsuan-Yi Chu (JIRA)" <ji...@apache.org> on 2014/12/05 02:57:12 UTC
[jira] [Updated] (DRILL-1811) select A, * from ... crashes JVM
[ https://issues.apache.org/jira/browse/DRILL-1811?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Sean Hsuan-Yi Chu updated DRILL-1811:
-------------------------------------
Description:
while "select *, A from ..." works, select A, * from ... crashes JVM.
As I discussed with Aman, the reason for the crash is because drill is not handling wildcard "*" correctly. So the operator Project "transfers" the requested column A to the output instead of "copy".
So when drill is trying to project to the second operand in the select clause (i.e., "*" ), nothing will come out of that column.
was:
while "select *, A from ..." works, select A, * from ... crashes JVM.
As I discussed with Aman, the reason for the crash is because drill is not aware of the wildcard "*". So the operator Project "transfers" the requested column A to the output instead of "copy".
So when drill is trying to project to the second operand in the select clause (i.e., "*" ), nothing will come out of that column.
> select A, * from ... crashes JVM
> --------------------------------
>
> Key: DRILL-1811
> URL: https://issues.apache.org/jira/browse/DRILL-1811
> Project: Apache Drill
> Issue Type: Bug
> Components: Execution - Operators
> Reporter: Sean Hsuan-Yi Chu
> Assignee: Sean Hsuan-Yi Chu
> Priority: Blocker
> Fix For: 0.8.0
>
>
> while "select *, A from ..." works, select A, * from ... crashes JVM.
> As I discussed with Aman, the reason for the crash is because drill is not handling wildcard "*" correctly. So the operator Project "transfers" the requested column A to the output instead of "copy".
> So when drill is trying to project to the second operand in the select clause (i.e., "*" ), nothing will come out of that column.
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