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Posted to issues@drill.apache.org by "Sudheesh Katkam (JIRA)" <ji...@apache.org> on 2015/10/12 17:54:06 UTC
[jira] [Assigned] (DRILL-3722) LIMIT 1 query on top of a dir with
50K files takes ~150 seconds
[ https://issues.apache.org/jira/browse/DRILL-3722?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Sudheesh Katkam reassigned DRILL-3722:
--------------------------------------
Assignee: Sudheesh Katkam
> LIMIT 1 query on top of a dir with 50K files takes ~150 seconds
> ---------------------------------------------------------------
>
> Key: DRILL-3722
> URL: https://issues.apache.org/jira/browse/DRILL-3722
> Project: Apache Drill
> Issue Type: Bug
> Components: Query Planning & Optimization
> Affects Versions: 1.2.0
> Reporter: Rahul Challapalli
> Assignee: Sudheesh Katkam
> Fix For: Future
>
>
> git.commit.id.abbrev=445790f
> I ran the below query on top of TPCH SF100 lineitem table with 50K files. For the nature of the query, it looks like drill is very slow in handling it.
> {code}
> select * from lineitem limit 1;
> +-------------+------------+------------+---------------+-------------+------------------+-------------+--------+---------------+---------------+--------------+---------------+----------------+-----------------+--------------+--------------+
> | L_ORDERKEY | L_PARTKEY | L_SUPPKEY | L_LINENUMBER | L_QUANTITY | L_EXTENDEDPRICE | L_DISCOUNT | L_TAX | L_RETURNFLAG | L_LINESTATUS | L_SHIPDATE | L_COMMITDATE | L_RECEIPTDATE | L_SHIPINSTRUCT | L_SHIPMODE | L_COMMENT |
> +-------------+------------+------------+---------------+-------------+------------------+-------------+--------+---------------+---------------+--------------+---------------+----------------+-----------------+--------------+--------------+
> | 456884480 | 19781678 | 781679 | 1 | 21.0 | 36932.49 | 0.1 | 0.03 | [B@44f54509 | [B@4287753d | [B@4b2219ea | [B@2bd3782f | [B@48776c23 | [B@185c9300 | [B@65b6f17e | [B@4da8bb5d |
> +-------------+------------+------------+---------------+-------------+------------------+-------------+--------+---------------+---------------+--------------+---------------+----------------+-----------------+--------------+--------------+
> 1 row selected (158.976 seconds)
> {code}
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