[HIVE-10334] LLAP: Self-joins with the cache enabled

• Type: Sub-task
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Affects Version/s: llap
• Fix Version/s: llap
• Assignee: Sergey Shelukhin
• Reporter: Gopal Vijayaraghavan
• Created: 14/Apr/15 21:14
• Updated: 17/Feb/16 01:33
• Resolved: 15/Apr/15 01:35

Description

Looks like reading the same split from 2 tasks in the same process might have some corner cases.

hive> select count(1) from tpch_orc_snappy_1000.region y join tpch_orc_snappy_1000.region x;
OK
0

hive> set hive.llap.io.enabled=false;
hive> select count(1) from tpch_orc_snappy_1000.region y join tpch_orc_snappy_1000.region x;
OK
25