Deepak Jaiswal created HIVE-17851:
-------------------------------------
Summary: Bucket Map Join : Pick correct number of buckets
Key: HIVE-17851
URL: https://issues.apache.org/jira/browse/HIVE-17851
Project: Hive
Issue Type: Bug
Reporter: Deepak Jaiswal
Assignee: Deepak Jaiswal
CREATE TABLE tab_part (key int, value string) PARTITIONED BY(ds STRING)
CLUSTERED BY (key) INTO 2 BUCKETS STORED AS TEXTFILE;
CREATE TABLE tab(key int, value string) PARTITIONED BY(ds STRING) CLUSTERED BY
(key) INTO 4 BUCKETS STORED AS TEXTFILE;
select a.key, a.value, b.value
from tab a join tab_part b on a.key = b.key;
In above case, if tab_part is bigger then it should be the streaming side and
the smaller side should create two hash tables. However, currently, it blindly
picks 4 as number of buckets as it is the maximum number of buckets among all
the tables involved in the join and create 4 hash tables.
--
This message was sent by Atlassian JIRA
(v6.4.14#64029)
