[HIVE-10113] LLAP: reducers running in LLAP starve out map retries

• Type: Sub-task
• Status: Closed
• Priority: Major
• Resolution: Done
• Fix Version/s: llap
• Component/s: llap
• Assignee: Siddharth Seth
• Reporter: Sergey Shelukhin
• Created: 27/Mar/15 01:29
• Updated: 17/Feb/16 01:32
• Resolved: 28/Aug/15 23:48

Description

When query 17 is run, some mappers from Map 1 currently fail (due to unwrap issue, and also due to HIVE-10112).
This query has 1000+ reducers; if they are ran in llap, they all queue up, and the query locks up.
If only mappers run in LLAP, query completes.