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Posted to dev@drill.apache.org by "Rahul Challapalli (JIRA)" <ji...@apache.org> on 2016/12/21 19:15:58 UTC
[jira] [Created] (DRILL-5146) Unnecessary spilling to disk by sort
when we only have 5000 rows with one column
Rahul Challapalli created DRILL-5146:
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Summary: Unnecessary spilling to disk by sort when we only have 5000 rows with one column
Key: DRILL-5146
URL: https://issues.apache.org/jira/browse/DRILL-5146
Project: Apache Drill
Issue Type: Bug
Components: Execution - Relational Operators
Reporter: Rahul Challapalli
git.commit.id.abbrev=cf2b7c7
The below query spills to disk for the sort. The dataset contains 5000 files and each file contains a single record.
{code}
select * from dfs.`/drill/testdata/resource-manager/5000files/text` order by columns[1];
{code}
Enviironment :
{code}
DRILL_MAX_DIRECT_MEMORY="16G"
DRILL_MAX_HEAP="4G"
{code}
I attached the dataset, logs and the profile
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