[
https://issues.apache.org/jira/browse/DRILL-4715?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15361076#comment-15361076
]
Khurram Faraaz commented on DRILL-4715:
---------------------------------------
Test added here, Functional/ctas/ctas_joins_aggregates/ctas_DRILL_4715.sql
> Java compilation error for a query with large number of expressions
> -------------------------------------------------------------------
>
> Key: DRILL-4715
> URL: https://issues.apache.org/jira/browse/DRILL-4715
> Project: Apache Drill
> Issue Type: Bug
> Components: Execution - Codegen
> Reporter: Jinfeng Ni
> Assignee: Jinfeng Ni
> Fix For: 1.8.0
>
>
> The following query would hit compilation error, when Drill generates and
> compiles the run-time code.
> Q1 :
> {code}
> select expr1, expr2, expr3, ...., exprN
> from table
> {code}
> In Q1, expr1, expr2, ..., exprN are non-trivial expression (in stead of
> simply column reference), and N is big enough, then the run-time generated
> code may have a method which goes beyond the 64k limit imposed by JVM.
> This seems to be a regression from DRILL-3912 (Common subexpression
> elimination). CSE tries to put as many expressions in one block as possible,
> to detect and eliminate as many CSE as possible. However, this implies we may
> end up with big method with compilation error.
>
--
This message was sent by Atlassian JIRA
(v6.3.4#6332)
