[
https://issues.apache.org/jira/browse/HIVE-7784?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Mostafa Mokhtar updated HIVE-7784:
----------------------------------
Description:
With CBO we need the correct set of indexes to provide an efficient Read/Write
access.
These indexes improve performance of Explain plan and Analyzed table by 60% and
300%.
{code}
MySQL
CREATE INDEX PART_COL_STATS_N50 ON PART_COL_STATS
(DB_NAME,TABLE_NAME,COLUMN_NAME) USING BTREE;
MsSQL
CREATE INDEX PART_COL_STATS_N50 ON PART_COL_STATS
(DB_NAME,TABLE_NAME,COLUMN_NAME);
Oracle
CREATE INDEX PART_COL_STATS_N50 ON PART_COL_STATS
(DB_NAME,TABLE_NAME,COLUMN_NAME);
Postgres
CREATE INDEX "PART_COL_STATS_N50" ON "PART_COL_STATS" USING btree
("DB_NAME","TABLE_NAME","COLUMN_NAME");
{code}
was:
With CBO we need the correct set of indexes to provide an efficient Read/Write
access.
> Created the needed indexes on Hive.PART_COL_STATS for CBO
> ----------------------------------------------------------
>
> Key: HIVE-7784
> URL: https://issues.apache.org/jira/browse/HIVE-7784
> Project: Hive
> Issue Type: Bug
> Components: CBO
> Affects Versions: 0.14.0
> Reporter: Mostafa Mokhtar
> Assignee: Mostafa Mokhtar
> Fix For: 0.14.0
>
>
> With CBO we need the correct set of indexes to provide an efficient
> Read/Write access.
> These indexes improve performance of Explain plan and Analyzed table by 60%
> and 300%.
> {code}
> MySQL
> CREATE INDEX PART_COL_STATS_N50 ON PART_COL_STATS
> (DB_NAME,TABLE_NAME,COLUMN_NAME) USING BTREE;
> MsSQL
> CREATE INDEX PART_COL_STATS_N50 ON PART_COL_STATS
> (DB_NAME,TABLE_NAME,COLUMN_NAME);
> Oracle
> CREATE INDEX PART_COL_STATS_N50 ON PART_COL_STATS
> (DB_NAME,TABLE_NAME,COLUMN_NAME);
> Postgres
> CREATE INDEX "PART_COL_STATS_N50" ON "PART_COL_STATS" USING btree
> ("DB_NAME","TABLE_NAME","COLUMN_NAME");
> {code}
--
This message was sent by Atlassian JIRA
(v6.2#6252)
