From: Tom Lane <tgl@sss.pgh.pa.us>
Date: Wed, 15 Jun 2016 14:52:53 +0000 (-0400)
Subject: Force idle_in_transaction_session_timeout off in pg_dump and autovacuum.
X-Git-Tag: REL9_6_BETA2~36
X-Git-Url: http://git.postgresql.org/gitweb/-?a=commitdiff_plain;h=8383486f108c650b187358bfe811060627c751c9;p=postgresql-pgindent.git

Force idle_in_transaction_session_timeout off in pg_dump and autovacuum.

We disable statement_timeout and lock_timeout during dump and restore, to
prevent any global settings that might exist from breaking routine backups.
Commit c6dda1f48 should have added idle_in_transaction_session_timeout to
that list, but failed to.

Another place where these timeouts get turned off is autovacuum.  While
I doubt an idle timeout could fire there, it seems better to be safe than
sorry.

pg_dump issue noted by Bernd Helmle, the other one found by grepping.

Report: <352F9B77DB5D3082578D17BB@eje.land.credativ.lan>
---

diff --git a/src/backend/postmaster/autovacuum.c b/src/backend/postmaster/autovacuum.c
index 2c7446b4a4..3768f50bcf 100644
--- a/src/backend/postmaster/autovacuum.c
+++ b/src/backend/postmaster/autovacuum.c
@@ -538,11 +538,13 @@ AutoVacLauncherMain(int argc, char *argv[])
 	SetConfigOption("zero_damaged_pages", "false", PGC_SUSET, PGC_S_OVERRIDE);
 
 	/*
-	 * Force statement_timeout and lock_timeout to zero to avoid letting these
-	 * settings prevent regular maintenance from being executed.
+	 * Force settable timeouts off to avoid letting these settings prevent
+	 * regular maintenance from being executed.
 	 */
 	SetConfigOption("statement_timeout", "0", PGC_SUSET, PGC_S_OVERRIDE);
 	SetConfigOption("lock_timeout", "0", PGC_SUSET, PGC_S_OVERRIDE);
+	SetConfigOption("idle_in_transaction_session_timeout", "0",
+					PGC_SUSET, PGC_S_OVERRIDE);
 
 	/*
 	 * Force default_transaction_isolation to READ COMMITTED.  We don't want
@@ -1551,11 +1553,13 @@ AutoVacWorkerMain(int argc, char *argv[])
 	SetConfigOption("zero_damaged_pages", "false", PGC_SUSET, PGC_S_OVERRIDE);
 
 	/*
-	 * Force statement_timeout and lock_timeout to zero to avoid letting these
-	 * settings prevent regular maintenance from being executed.
+	 * Force settable timeouts off to avoid letting these settings prevent
+	 * regular maintenance from being executed.
 	 */
 	SetConfigOption("statement_timeout", "0", PGC_SUSET, PGC_S_OVERRIDE);
 	SetConfigOption("lock_timeout", "0", PGC_SUSET, PGC_S_OVERRIDE);
+	SetConfigOption("idle_in_transaction_session_timeout", "0",
+					PGC_SUSET, PGC_S_OVERRIDE);
 
 	/*
 	 * Force default_transaction_isolation to READ COMMITTED.  We don't want
diff --git a/src/bin/pg_dump/pg_backup_archiver.c b/src/bin/pg_dump/pg_backup_archiver.c
index eadc874f95..796a0aa716 100644
--- a/src/bin/pg_dump/pg_backup_archiver.c
+++ b/src/bin/pg_dump/pg_backup_archiver.c
@@ -2859,11 +2859,12 @@ _doSetFixedOutputState(ArchiveHandle *AH)
 {
 	RestoreOptions *ropt = AH->public.ropt;
 
-	/* Disable statement_timeout since restore is probably slow */
+	/*
+	 * Disable timeouts to allow for slow commands, idle parallel workers, etc
+	 */
 	ahprintf(AH, "SET statement_timeout = 0;\n");
-
-	/* Likewise for lock_timeout */
 	ahprintf(AH, "SET lock_timeout = 0;\n");
+	ahprintf(AH, "SET idle_in_transaction_session_timeout = 0;\n");
 
 	/* Select the correct character set encoding */
 	ahprintf(AH, "SET client_encoding = '%s';\n",
diff --git a/src/bin/pg_dump/pg_dump.c b/src/bin/pg_dump/pg_dump.c
index 0f1f6e9f93..13bfd2cfb9 100644
--- a/src/bin/pg_dump/pg_dump.c
+++ b/src/bin/pg_dump/pg_dump.c
@@ -1022,6 +1022,8 @@ setup_connection(Archive *AH, const char *dumpencoding,
 		ExecuteSqlStatement(AH, "SET statement_timeout = 0");
 	if (AH->remoteVersion >= 90300)
 		ExecuteSqlStatement(AH, "SET lock_timeout = 0");
+	if (AH->remoteVersion >= 90600)
+		ExecuteSqlStatement(AH, "SET idle_in_transaction_session_timeout = 0");
 
 	/*
 	 * Quote all identifiers, if requested.