Csaba Ringhofer created IMPALA-8865:
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Summary: Do COMPUTE STATS on ACID tables in a "proper"
transactional way
Key: IMPALA-8865
URL: https://issues.apache.org/jira/browse/IMPALA-8865
Project: IMPALA
Issue Type: Improvement
Components: Backend, Frontend
Affects Versions: Impala 3.3.0
Reporter: Csaba Ringhofer
Assignee: Csaba Ringhofer
IMPALA-8836's goal is just to get the stats in somehow in a way that Impala can
use them and Hive does not treat them as accurate. It would be the best if the
SELECT(s) that are behind the COMPUTE STATS would use the same validWriteId
list, and the stats would be set with the same writeId list to express that the
stats are based on that state of the table. Theoretically Hive uses this
mechanism to decide whether the stats are up to data by comparing a SELECTs
validWriteIdList with the one saved for stats and considers it stale if the
SELECT sees new writeIds.
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