Reduce lock levels of some ALTER TABLE cmds VALIDATE CONSTRAINT CLUSTER ON SET WITHOUT CLUSTER ALTER COLUMN SET STATISTICS ALTER COLUMN SET () ALTER COLUMN RESET () All other sub-commands use AccessExclusiveLock Simon Riggs and Noah Misch Reviews by Robert Haas and Andres Freund Branch ------ master Details ------- http://git.postgresql.org/pg/commitdiff/e5550d5fec66aa74caad1f79b79826ec64898688 Modified Files -------------- doc/src/sgml/mvcc.sgml | 9 +- doc/src/sgml/ref/alter_table.sgml | 38 ++++++- src/backend/catalog/toasting.c | 51 ++++++--- src/backend/commands/cluster.c | 14 +-- src/backend/commands/createas.c | 4 +- src/backend/commands/tablecmds.c | 174 ++++++++++++++++++----------- src/backend/tcop/utility.c | 4 +- src/backend/utils/adt/ruleutils.c | 33 +++++- src/backend/utils/cache/relcache.c | 74 ++++++++++-- src/include/catalog/toasting.h | 8 +- src/test/isolation/isolation_schedule | 1 + src/test/regress/expected/alter_table.out | 81 ++++++++++++-- src/test/regress/sql/alter_table.sql | 29 +++++ 13 files changed, 401 insertions(+), 119 deletions(-)
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