[HIVE-11863] FS based stats collection generates wrong results for tez (for union queries) - ASF JIRA

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Details

Type: Bug
Status: Resolved
Priority: Major
Resolution: Fixed
Affects Version/s: 1.3.0, 2.0.0
Fix Version/s: 2.3.0
Component/s: None
Labels:
None

Description

FS based stats collection is the default way to collect stats. However, there are some cases (involving unions) where it generates wrong results. Refer test case in ~~HIVE-11860~~ and compare test cli driver results against tez results. Also it will be good to extend statsfs.q test case with union queries.