Move master_update_shard_statistics() to pg_catalog

Fixes #546

src/backend/distributed/Makefile

@@ -6,7 +6,7 @@ citus_top_builddir = ../../..
 MODULE_big = citus
 EXTENSION = citus
 EXTVERSIONS = 5.0 5.0-1 5.0-2  \
-	5.1-1 5.1-2
+	5.1-1 5.1-2 5.1-3
 
 # All citus--*.sql files in the source directory
 DATA = $(patsubst $(citus_abs_srcdir)/%.sql,%.sql,$(wildcard $(citus_abs_srcdir)/$(EXTENSION)--*--*.sql))
@@ -37,6 +37,8 @@ $(EXTENSION)--5.1-1.sql: $(EXTENSION)--5.0-2.sql $(EXTENSION)--5.0-2--5.1-1.sql
 	cat $^ > $@
 $(EXTENSION)--5.1-2.sql: $(EXTENSION)--5.1-1.sql $(EXTENSION)--5.1-1--5.1-2.sql
 	cat $^ > $@
+$(EXTENSION)--5.1-3.sql: $(EXTENSION)--5.1-2.sql $(EXTENSION)--5.1-2--5.1-3.sql
+	cat $^ > $@
 	
 NO_PGXS = 1
 

src/backend/distributed/citus--5.1-2--5.1-3.sql

@@ -0,0 +1,8 @@
+DROP FUNCTION master_update_shard_statistics(shard_id bigint);
+
+CREATE FUNCTION pg_catalog.master_update_shard_statistics(shard_id bigint)
+    RETURNS bigint
+    LANGUAGE C STRICT
+    AS 'MODULE_PATHNAME', $$master_update_shard_statistics$$;
+COMMENT ON FUNCTION master_update_shard_statistics(bigint)
+    IS 'updates shard statistics and returns the updated shard size';

src/backend/distributed/citus.control

@@ -1,6 +1,6 @@
 # Citus extension
 comment = 'Citus distributed database'
-default_version = '5.1-2'
+default_version = '5.1-3'
 module_pathname = '$libdir/citus'
 relocatable = false
 schema = pg_catalog

src/test/regress/expected/multi_extension.out

@@ -14,6 +14,7 @@ ALTER EXTENSION citus UPDATE TO '5.0-1';
 ALTER EXTENSION citus UPDATE TO '5.0-2';
 ALTER EXTENSION citus UPDATE TO '5.1-1';
 ALTER EXTENSION citus UPDATE TO '5.1-2';
+ALTER EXTENSION citus UPDATE TO '5.1-3';
 -- drop extension an re-create in newest version
 DROP EXTENSION citus;
 \c

src/test/regress/sql/multi_extension.sql

@@ -16,6 +16,7 @@ ALTER EXTENSION citus UPDATE TO '5.0-1';
 ALTER EXTENSION citus UPDATE TO '5.0-2';
 ALTER EXTENSION citus UPDATE TO '5.1-1';
 ALTER EXTENSION citus UPDATE TO '5.1-2';
+ALTER EXTENSION citus UPDATE TO '5.1-3';
 
 -- drop extension an re-create in newest version
 DROP EXTENSION citus;