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Event Trigger for table_rewrite

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Generate a table_rewrite event when ALTER TABLE
attempts to rewrite a table. Provide helper
functions to identify table and reason.

Intended use case is to help assess or to react
to schema changes that might hold exclusive locks
for long periods.

Dimitri Fontaine, triggering an edit by Simon Riggs

Reviewed in detail by Michael Paquier
This commit is contained in:
Simon Riggs
2014-12-08 00:55:28 +09:00
parent b8e33a85d4
commit 618c9430a8
13 changed files with 556 additions and 39 deletions
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2
src/backend/utils/cache/evtcache.c vendored
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@ -169,6 +169,8 @@ BuildEventTriggerCache(void)
event = EVT_DDLCommandEnd;
else if (strcmp(evtevent, "sql_drop") == 0)
event = EVT_SQLDrop;
else if (strcmp(evtevent, "table_rewrite") == 0)
event = EVT_TableRewrite;
else
continue;