diff --git a/src/backend/utils/adt/arrayfuncs.c b/src/backend/utils/adt/arrayfuncs.c
index 91df184..ef86cac 100644
--- a/src/backend/utils/adt/arrayfuncs.c
+++ b/src/backend/utils/adt/arrayfuncs.c
@@ -4577,16 +4577,10 @@ accumArrayResult(ArrayBuildState *astate,
 	{
 		/* First time through --- initialize */
 
-		/* Make a temporary context to hold all the junk */
-		arr_context = AllocSetContextCreate(rcontext,
-											"accumArrayResult",
-											ALLOCSET_DEFAULT_MINSIZE,
-											ALLOCSET_DEFAULT_INITSIZE,
-											ALLOCSET_DEFAULT_MAXSIZE);
-		oldcontext = MemoryContextSwitchTo(arr_context);
+		oldcontext = MemoryContextSwitchTo(rcontext);
 		astate = (ArrayBuildState *) palloc(sizeof(ArrayBuildState));
-		astate->mcontext = arr_context;
-		astate->alen = 64;		/* arbitrary starting array size */
+		astate->mcontext = rcontext;
+		astate->alen = 4;		/* arbitrary starting array size */
 		astate->dvalues = (Datum *) palloc(astate->alen * sizeof(Datum));
 		astate->dnulls = (bool *) palloc(astate->alen * sizeof(bool));
 		astate->nelems = 0;
@@ -4603,7 +4597,7 @@ accumArrayResult(ArrayBuildState *astate,
 		/* enlarge dvalues[]/dnulls[] if needed */
 		if (astate->nelems >= astate->alen)
 		{
-			astate->alen *= 2;
+			astate->alen += 4;
 			astate->dvalues = (Datum *)
 				repalloc(astate->dvalues, astate->alen * sizeof(Datum));
 			astate->dnulls = (bool *)
@@ -4691,10 +4685,6 @@ makeMdArrayResult(ArrayBuildState *astate,
 
 	MemoryContextSwitchTo(oldcontext);
 
-	/* Clean up all the junk */
-	if (release)
-		MemoryContextDelete(astate->mcontext);
-
 	return PointerGetDatum(result);
 }