[refer #PGPRO-4978] Update the .gitignore file. #24
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Tags: shardman.
…rgeAppend, a SubqueryScan nodes. Tags: shardman.
Tags: shardman.
Replace find_ok assert with elog panic message.
Improve the elog panic message introduced in previous commit. Fix ForeignScan estimation logic.
Switch from AQO_EXPLAIN define to the two user GUCS: aqo.details and aqo.show_hash. New ExplainOneNode hook allows to add info into explain of each node.
AQO supports push-down of trivial JOIN and JOIN with mergejoinable clauses.
short-living planner memory context. Some indentations fixed.
Big commit. To avoiding UPDATE/UPDATE/DELETE/INSERT conflicts we use user locks on a pair (query_hash, fspace_hash) to guarantee that only one backend can do INSERT/UPDATE/DELETE of a aqo table row. Also we use dirty snapshot to see concurrently inserted/updated tuples. Such conflict may cause deadlocks on end-of-transaction waiting. Currently, if we detected such conflict, we refuse from we ML-base changing.
collection. Add some comments on auto tuning algorithm. change the intelligent.sql test to avoid unsteady behaviour in the intelligent mode. Change the logic of a node hash showing. Add regression test on forced stat collection mode.
Add regression test on currently unsupported planner clauses.
Align the AQO code in accordance with state of current master.
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tags: aqo