From 9043ef390f4f0b4586cfe59cbd22314b9c3e2957 Mon Sep 17 00:00:00 2001
From: Robert Haas <rhaas@postgresql.org>
Date: Fri, 26 Jun 2015 11:37:32 -0400
Subject: [PATCH] Don't warn about creating temporary or unlogged hash indexes.
Warning people that no WAL-logging will be done doesn't make sense
in this case.
Michael Paquier
---
src/backend/commands/indexcmds.c | 3 ++-
src/test/regress/expected/create_index.out | 3 +++
src/test/regress/sql/create_index.sql | 4 ++++
3 files changed, 9 insertions(+), 1 deletion(-)
diff --git a/src/backend/commands/indexcmds.c b/src/backend/commands/indexcmds.c
index 7340a1fc2bb..b450bcf754e 100644
--- a/src/backend/commands/indexcmds.c
+++ b/src/backend/commands/indexcmds.c
@@ -490,7 +490,8 @@ DefineIndex(Oid relationId,
accessMethodId = HeapTupleGetOid(tuple);
accessMethodForm = (Form_pg_am) GETSTRUCT(tuple);
- if (strcmp(accessMethodName, "hash") == 0)
+ if (strcmp(accessMethodName, "hash") == 0 &&
+ RelationNeedsWAL(rel))
ereport(WARNING,
(errmsg("hash indexes are not WAL-logged and their use is discouraged")));
diff --git a/src/test/regress/expected/create_index.out b/src/test/regress/expected/create_index.out
index 5c2e67d0db8..b72e65d1bd0 100644
--- a/src/test/regress/expected/create_index.out
+++ b/src/test/regress/expected/create_index.out
@@ -2342,6 +2342,9 @@ CREATE INDEX hash_txt_index ON hash_txt_heap USING hash (random text_ops);
WARNING: hash indexes are not WAL-logged and their use is discouraged
CREATE INDEX hash_f8_index ON hash_f8_heap USING hash (random float8_ops);
WARNING: hash indexes are not WAL-logged and their use is discouraged
+CREATE UNLOGGED TABLE unlogged_hash_table (id int4);
+CREATE INDEX unlogged_hash_index ON unlogged_hash_table USING hash (id int4_ops);
+DROP TABLE unlogged_hash_table;
-- CREATE INDEX hash_ovfl_index ON hash_ovfl_heap USING hash (x int4_ops);
--
-- Test functional index
diff --git a/src/test/regress/sql/create_index.sql b/src/test/regress/sql/create_index.sql
index 67dd2f0685e..ff8695361ce 100644
--- a/src/test/regress/sql/create_index.sql
+++ b/src/test/regress/sql/create_index.sql
@@ -684,6 +684,10 @@ CREATE INDEX hash_txt_index ON hash_txt_heap USING hash (random text_ops);
CREATE INDEX hash_f8_index ON hash_f8_heap USING hash (random float8_ops);
+CREATE UNLOGGED TABLE unlogged_hash_table (id int4);
+CREATE INDEX unlogged_hash_index ON unlogged_hash_table USING hash (id int4_ops);
+DROP TABLE unlogged_hash_table;
+
-- CREATE INDEX hash_ovfl_index ON hash_ovfl_heap USING hash (x int4_ops);
--
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