From fb5df0c2261c13f1310d1ad73196b01f5a50b0af Mon Sep 17 00:00:00 2001
From: Emre Hasegeli <emre@hasegeli.com>
Date: Sun, 22 Mar 2015 17:31:09 +0100
Subject: [PATCH 3/7] remove assert checking

---
 src/backend/access/brin/brin.c | 58 ------------------------------------------
 1 file changed, 58 deletions(-)

diff --git a/src/backend/access/brin/brin.c b/src/backend/access/brin/brin.c
index 2b5fb8d..a6dd4bf 100644
--- a/src/backend/access/brin/brin.c
+++ b/src/backend/access/brin/brin.c
@@ -98,25 +98,20 @@ brininsert(PG_FUNCTION_ARGS)
 	revmap = brinRevmapInitialize(idxRel, &pagesPerRange);
 
 	for (;;)
 	{
 		bool		need_insert = false;
 		OffsetNumber off;
 		BrinTuple  *brtup;
 		BrinMemTuple *dtup;
 		BlockNumber heapBlk;
 		int			keyno;
-#ifdef USE_ASSERT_CHECKING
-		BrinTuple  *tmptup;
-		BrinMemTuple *tmpdtup;
-		Size 		tmpsiz;
-#endif
 
 		CHECK_FOR_INTERRUPTS();
 
 		heapBlk = ItemPointerGetBlockNumber(heaptid);
 		/* normalize the block number to be the first block in the range */
 		heapBlk = (heapBlk / pagesPerRange) * pagesPerRange;
 		brtup = brinGetTupleForHeapBlock(revmap, heapBlk, &buf, &off, NULL,
 										 BUFFER_LOCK_SHARE);
 
 		/* if range is unsummarized, there's nothing to do */
@@ -130,59 +125,20 @@ brininsert(PG_FUNCTION_ARGS)
 			tupcxt = AllocSetContextCreate(CurrentMemoryContext,
 										   "brininsert cxt",
 										   ALLOCSET_DEFAULT_MINSIZE,
 										   ALLOCSET_DEFAULT_INITSIZE,
 										   ALLOCSET_DEFAULT_MAXSIZE);
 			oldcxt = MemoryContextSwitchTo(tupcxt);
 		}
 
 		dtup = brin_deform_tuple(bdesc, brtup);
 
-#ifdef USE_ASSERT_CHECKING
-		{
-			/*
-			 * When assertions are enabled, we use this as an opportunity to
-			 * test the "union" method, which would otherwise be used very
-			 * rarely: first create a placeholder tuple, and addValue the
-			 * value we just got into it.  Then union the existing index tuple
-			 * with the updated placeholder tuple.  The tuple resulting from
-			 * that union should be identical to the one resulting from the
-			 * regular operation (straight addValue) below.
-			 *
-			 * Here we create the tuple to compare with; the actual comparison
-			 * is below.
-			 */
-			tmptup = brin_form_placeholder_tuple(bdesc, heapBlk, &tmpsiz);
-			tmpdtup = brin_deform_tuple(bdesc, tmptup);
-			for (keyno = 0; keyno < bdesc->bd_tupdesc->natts; keyno++)
-			{
-				BrinValues *bval;
-				FmgrInfo   *addValue;
-
-				bval = &tmpdtup->bt_columns[keyno];
-				addValue = index_getprocinfo(idxRel, keyno + 1,
-											 BRIN_PROCNUM_ADDVALUE);
-				FunctionCall4Coll(addValue,
-								  idxRel->rd_indcollation[keyno],
-								  PointerGetDatum(bdesc),
-								  PointerGetDatum(bval),
-								  values[keyno],
-								  nulls[keyno]);
-			}
-
-			union_tuples(bdesc, tmpdtup, brtup);
-
-			tmpdtup->bt_placeholder = dtup->bt_placeholder;
-			tmptup = brin_form_tuple(bdesc, heapBlk, tmpdtup, &tmpsiz);
-		}
-#endif
-
 		/*
 		 * Compare the key values of the new tuple to the stored index values;
 		 * our deformed tuple will get updated if the new tuple doesn't fit
 		 * the original range (note this means we can't break out of the loop
 		 * early). Make a note of whether this happens, so that we know to
 		 * insert the modified tuple later.
 		 */
 		for (keyno = 0; keyno < bdesc->bd_tupdesc->natts; keyno++)
 		{
 			Datum		result;
@@ -195,34 +151,20 @@ brininsert(PG_FUNCTION_ARGS)
 			result = FunctionCall4Coll(addValue,
 									   idxRel->rd_indcollation[keyno],
 									   PointerGetDatum(bdesc),
 									   PointerGetDatum(bval),
 									   values[keyno],
 									   nulls[keyno]);
 			/* if that returned true, we need to insert the updated tuple */
 			need_insert |= DatumGetBool(result);
 		}
 
-#ifdef USE_ASSERT_CHECKING
-		{
-			/*
-			 * Now we can compare the tuple produced by the union function
-			 * with the one from plain addValue.
-			 */
-			BrinTuple  *cmptup;
-			Size		cmpsz;
-
-			cmptup = brin_form_tuple(bdesc, heapBlk, dtup, &cmpsz);
-			Assert(brin_tuples_equal(tmptup, tmpsiz, cmptup, cmpsz));
-		}
-#endif
-
 		if (!need_insert)
 		{
 			/*
 			 * The tuple is consistent with the new values, so there's nothing
 			 * to do.
 			 */
 			LockBuffer(buf, BUFFER_LOCK_UNLOCK);
 		}
 		else
 		{
-- 
2.3.2