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https://issues.apache.org/jira/browse/DRILL-2581?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Chun Chang closed DRILL-2581.
-----------------------------
Assignee: Chun Chang (was: Hanifi Gunes)
> count(*) on a single wide record file took too long
> ---------------------------------------------------
>
> Key: DRILL-2581
> URL: https://issues.apache.org/jira/browse/DRILL-2581
> Project: Apache Drill
> Issue Type: Bug
> Components: Execution - Data Types
> Affects Versions: 0.8.0
> Reporter: Chun Chang
> Assignee: Chun Chang
> Priority: Minor
> Fix For: 0.9.0
>
>
> This is with the 0.8 release candidate.
> I have a file containing a single record. The file is about 3.5 MB in size. A
> count(*) on the file took over one and half minute.
> {code}
> 0: jdbc:drill:schema=dfs.drillTestDirComplexJ> select * from sys.version;
> +------------+----------------+-------------+-------------+------------+
> | commit_id | commit_message | commit_time | build_email | build_time |
> +------------+----------------+-------------+-------------+------------+
> | 462e50ce9c4b829c2a4bafdeb9763bfba677c726 | DRILL-2575:
> FragmentExecutor.cancel() blasts through state transitions regardless of
> current state | 25.03.2015 @ 21:11:23 PDT | cchang...@gmail.com | 26.03.2015
> @ 10:51:15 PDT |
> +------------+----------------+-------------+-------------+------------+
> 1 row selected (0.07 seconds)
> 0: jdbc:drill:schema=dfs.drillTestDirComplexJ> select count(*) from
> `singlewide.json`;
> +------------+
> | EXPR$0 |
> +------------+
> | 1 |
> +------------+
> 1 row selected (99.91 seconds)
> {code}
> The data file can be downloaded shortly from
> http://apache-drill.s3.amazonaws.com/list.html
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