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Andres Freund 5bcf389ecf Fix EXPLAIN ANALYZE of hash join when the leader doesn't participate. ... If a hash join appears in a parallel query, there may be no hash table available for explain.c to inspect even though a hash table may have been built in other processes. This could happen either because parallel_leader_participation was set to off or because the leader happened to hit the end of the outer relation immediately (even though the complete relation is not empty) and decided not to build the hash table. Commit bf11e7ee introduced a way for workers to exchange instrumentation via the DSM segment for Sort nodes even though they are not parallel-aware. This commit does the same for Hash nodes, so that explain.c has a way to find instrumentation data from an arbitrary participant that actually built the hash table. Author: Thomas Munro Reviewed-By: Andres Freund Discussion: https://postgr.es/m/CAEepm%3D3DUQC2-z252N55eOcZBer6DPdM%3DFzrxH9dZc5vYLsjaA%40mail.gmail.com		8 years ago
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Makefile	Implement multivariate n-distinct coefficients	9 years ago
aggregatecmds.c	SQL procedures	8 years ago
alter.c	SQL procedures	8 years ago
amcmds.c	Fix typos in comments.	9 years ago
analyze.c	When VACUUM or ANALYZE skips a concurrently dropped table, log it.	8 years ago
async.c	Replace remaining uses of pq_sendint with pq_sendint{8,16,32}.	8 years ago
cluster.c	Change tupledesc->attrs[n] to TupleDescAttr(tupledesc, n).	9 years ago
collationcmds.c	Don't install ICU collation keyword variants	9 years ago
comment.c	Add some const decorations to prototypes	8 years ago
constraint.c	Allow index AMs to cache data across aminsert calls within a SQL command.	9 years ago
conversioncmds.c	Update copyright via script for 2017	9 years ago
copy.c	Re-allow INSERT .. ON CONFLICT DO NOTHING on partitioned tables.	8 years ago
createas.c	Allow DML commands that create tables to use parallel query.	8 years ago
dbcommands.c	Change TRUE/FALSE to true/false	8 years ago
define.c	Phase 3 of pgindent updates.	9 years ago
discard.c	Update copyright via script for 2017	9 years ago
dropcmds.c	SQL procedures	8 years ago
event_trigger.c	SQL procedures	8 years ago
explain.c	Fix EXPLAIN ANALYZE of hash join when the leader doesn't participate.	8 years ago
extension.c	Add some const decorations to prototypes	8 years ago
foreigncmds.c	Phase 3 of pgindent updates.	9 years ago
functioncmds.c	SQL procedures	8 years ago
indexcmds.c	Simplify index_[constraint_]create API	8 years ago
lockcmds.c	Update copyright via script for 2017	9 years ago
matview.c	Change tupledesc->attrs[n] to TupleDescAttr(tupledesc, n).	9 years ago
opclasscmds.c	SQL procedures	8 years ago
operatorcmds.c	Phase 3 of pgindent updates.	9 years ago
policy.c	Phase 3 of pgindent updates.	9 years ago
portalcmds.c	Remove unnecessary PG_TRY overhead for CurrentResourceOwner changes.	8 years ago
prepare.c	Phase 3 of pgindent updates.	9 years ago
proclang.c	Change TRUE/FALSE to true/false	8 years ago
publicationcmds.c	Message style fixes	8 years ago
schemacmds.c	Phase 3 of pgindent updates.	9 years ago
seclabel.c	Reduce excessive dereferencing of function pointers	8 years ago
sequence.c	Remove unnecessary PG_TRY overhead for CurrentResourceOwner changes.	8 years ago
statscmds.c	Message style fixes	8 years ago
subscriptioncmds.c	... and the very same bug in publicationListToArray().	8 years ago
tablecmds.c	Fix assorted syscache lookup sloppiness in partition-related code.	8 years ago
tablespace.c	Change TRUE/FALSE to true/false	8 years ago
trigger.c	Change TRUE/FALSE to true/false	8 years ago
tsearchcmds.c	Phase 3 of pgindent updates.	9 years ago
typecmds.c	Add some const decorations to prototypes	8 years ago
user.c	Don't allow logging in with empty password.	9 years ago
vacuum.c	When VACUUM or ANALYZE skips a concurrently dropped table, log it.	8 years ago
vacuumlazy.c	Update typedefs.list and re-run pgindent	8 years ago
variable.c	Remove uses of "slave" in replication contexts	9 years ago
view.c	Add some const decorations to prototypes	8 years ago