postgres
diff --git a/‎src/backend/catalog/index.c
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+4Lines changed: 4 additions & 0 deletions b/‎src/backend/catalog/index.c
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+4Lines changed: 4 additions & 0 deletions
diff --git a/‎src/test/regress/expected/create_index.out
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+21Lines changed: 21 additions & 0 deletions b/‎src/test/regress/expected/create_index.out
Copy file name to clipboardExpand all lines: src/test/regress/expected/create_index.out
+21Lines changed: 21 additions & 0 deletions
diff --git a/‎src/test/regress/sql/create_index.sql
Copy file name to clipboardExpand all lines: src/test/regress/sql/create_index.sql
+11Lines changed: 11 additions & 0 deletions b/‎src/test/regress/sql/create_index.sql
Copy file name to clipboardExpand all lines: src/test/regress/sql/create_index.sql
+11Lines changed: 11 additions & 0 deletions
@@ -1538,6 +1538,10 @@ index_concurrently_swap(Oid newIndexId, Oid oldIndexId, const char *oldName)
 	newIndexForm->indimmediate = oldIndexForm->indimmediate;
 	oldIndexForm->indimmediate = true;
 
+	/* Preserve indisreplident in the new index */
+	newIndexForm->indisreplident = oldIndexForm->indisreplident;
+	oldIndexForm->indisreplident = false;
+
 	/* Preserve indisclustered in the new index */
 	newIndexForm->indisclustered = oldIndexForm->indisclustered;
 
 
@@ -2141,6 +2141,27 @@ SELECT indexrelid::regclass, indisclustered FROM pg_index
 (1 row)
 
 DROP TABLE concur_clustered;
+-- Check that indisreplident updates are preserved.
+CREATE TABLE concur_replident(i int NOT NULL);
+CREATE UNIQUE INDEX concur_replident_i_idx ON concur_replident(i);
+ALTER TABLE concur_replident REPLICA IDENTITY
+  USING INDEX concur_replident_i_idx;
+SELECT indexrelid::regclass, indisreplident FROM pg_index
+  WHERE indrelid = 'concur_replident'::regclass;
+       indexrelid       | indisreplident 
+------------------------+----------------
+ concur_replident_i_idx | t
+(1 row)
+
+REINDEX TABLE CONCURRENTLY concur_replident;
+SELECT indexrelid::regclass, indisreplident FROM pg_index
+  WHERE indrelid = 'concur_replident'::regclass;
+       indexrelid       | indisreplident 
+------------------------+----------------
+ concur_replident_i_idx | t
+(1 row)
+
+DROP TABLE concur_replident;
 -- Partitions
 -- Create some partitioned tables
 CREATE TABLE concur_reindex_part (c1 int, c2 int) PARTITION BY RANGE (c1);
 
@@ -866,6 +866,17 @@ REINDEX TABLE CONCURRENTLY concur_clustered;
 SELECT indexrelid::regclass, indisclustered FROM pg_index
   WHERE indrelid = 'concur_clustered'::regclass;
 DROP TABLE concur_clustered;
+-- Check that indisreplident updates are preserved.
+CREATE TABLE concur_replident(i int NOT NULL);
+CREATE UNIQUE INDEX concur_replident_i_idx ON concur_replident(i);
+ALTER TABLE concur_replident REPLICA IDENTITY
+  USING INDEX concur_replident_i_idx;
+SELECT indexrelid::regclass, indisreplident FROM pg_index
+  WHERE indrelid = 'concur_replident'::regclass;
+REINDEX TABLE CONCURRENTLY concur_replident;
+SELECT indexrelid::regclass, indisreplident FROM pg_index
+  WHERE indrelid = 'concur_replident'::regclass;
+DROP TABLE concur_replident;
 
 -- Partitions
 -- Create some partitioned tables