Use ereport not elog for some corrupt-HOT-chain reports.

tglsfdc · tglsfdc · commit 2b2c5aae90fa · 2018-03-01T16:23:46.000-05:00
These errors have been seen in the field in corrupted-data situations. It seems worthwhile to report them with ERRCODE_DATA_CORRUPTED, rather than the generic ERRCODE_INTERNAL_ERROR, for the benefit of log monitoring and tools like amcheck. However, use errmsg_internal so that the text strings still aren't translated; it seems unlikely to be worth translators' time to do so. Back-patch to 9.3, like the predecessor commit d70cf81 that introduced these elog calls originally (replacing Asserts). Peter Geoghegan Discussion: https://postgr.es/m/CAH2-Wzmn4-Pg-UGFwyuyK-wiTih9j32pwg_7T9iwqXpAUZr=Mg@mail.gmail.com
diff --git a/src/backend/catalog/index.c b/src/backend/catalog/index.c
@@ -2589,9 +2589,12 @@ IndexBuildHeapRangeScan(Relation heapRelation,
 			offnum = ItemPointerGetOffsetNumber(&heapTuple->t_self);
 
 			if (!OffsetNumberIsValid(root_offsets[offnum - 1]))
-				elog(ERROR, "failed to find parent tuple for heap-only tuple at (%u,%u) in table \"%s\"",
-					 ItemPointerGetBlockNumber(&heapTuple->t_self),
-					 offnum, RelationGetRelationName(heapRelation));
+				ereport(ERROR,
+						(errcode(ERRCODE_DATA_CORRUPTED),
+						 errmsg_internal("failed to find parent tuple for heap-only tuple at (%u,%u) in table \"%s\"",
+										 ItemPointerGetBlockNumber(&heapTuple->t_self),
+										 offnum,
+										 RelationGetRelationName(heapRelation))));
 
 			ItemPointerSetOffsetNumber(&rootTuple.t_self,
 									   root_offsets[offnum - 1]);
@@ -3054,10 +3057,12 @@ validate_index_heapscan(Relation heapRelation,
 		{
 			root_offnum = root_offsets[root_offnum - 1];
 			if (!OffsetNumberIsValid(root_offnum))
-				elog(ERROR, "failed to find parent tuple for heap-only tuple at (%u,%u) in table \"%s\"",
-					 ItemPointerGetBlockNumber(heapcursor),
-					 ItemPointerGetOffsetNumber(heapcursor),
-					 RelationGetRelationName(heapRelation));
+				ereport(ERROR,
+						(errcode(ERRCODE_DATA_CORRUPTED),
+						 errmsg_internal("failed to find parent tuple for heap-only tuple at (%u,%u) in table \"%s\"",
+										 ItemPointerGetBlockNumber(heapcursor),
+										 ItemPointerGetOffsetNumber(heapcursor),
+										 RelationGetRelationName(heapRelation))));
 			ItemPointerSetOffsetNumber(&rootTuple, root_offnum);
 		}
 
