[
https://issues.apache.org/jira/browse/DRILL-5457?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16026477#comment-16026477
]
ASF GitHub Bot commented on DRILL-5457:
---------------------------------------
Github user rchallapalli commented on the issue:
https://github.com/apache/drill/pull/822
And based on my initial testing, I observed that the hash-agg is only using
half of the memory allocated. Since the planner by default uses a 2-phase agg,
the memory computation logic divides the allocated memory between the 2
hash-agg operators in the plan. This is grossly in-efficient. And every test
written would need to be modified once this issue gets resolved. Hence I would
push for a fix sooner than later
> Support Spill to Disk for the Hash Aggregate Operator
> -----------------------------------------------------
>
> Key: DRILL-5457
> URL: https://issues.apache.org/jira/browse/DRILL-5457
> Project: Apache Drill
> Issue Type: Improvement
> Components: Execution - Relational Operators
> Affects Versions: 1.10.0
> Reporter: Boaz Ben-Zvi
> Assignee: Boaz Ben-Zvi
> Fix For: 1.11.0
>
>
> Support gradual spilling memory to disk as the available memory gets too
> small to allow in memory work for the Hash Aggregate Operator.
--
This message was sent by Atlassian JIRA
(v6.3.15#6346)
