Changeset: 4a7e5558870d for MonetDB
URL: http://dev.monetdb.org/hg/MonetDB?cmd=changeset;node=4a7e5558870d
Modified Files:
gdk/gdk_cross.c
Branch: default
Log Message:
HACK: refuse to produce huge cross products during a test run.
Currently, sql/test/SQLite_regress/sqillogictest/select4.test does
this. Somewhere along the way it produces a 2e9 row cross product (32
GB results in two columns) which are both projected (another 32 GB).
diffs (14 lines):
diff --git a/gdk/gdk_cross.c b/gdk/gdk_cross.c
--- a/gdk/gdk_cross.c
+++ b/gdk/gdk_cross.c
@@ -17,6 +17,10 @@ BATcross1(BAT **r1p, BAT **r2p, BAT *l,
BUN i, j;
oid *restrict p1, *restrict p2;
+ FORCEMITODEBUG if (BATcount(l) * BATcount(r) > 100000000) {
+ GDKerror("BATsubcross: crossproduct too large for testing
("BUNFMT"*"BUNFMT")\n", BATcount(l), BATcount(r));
+ return GDK_FAIL;
+ }
bn1 = COLnew(0, TYPE_oid, BATcount(l) * BATcount(r), TRANSIENT);
bn2 = COLnew(0, TYPE_oid, BATcount(l) * BATcount(r), TRANSIENT);
if (bn1 == NULL || bn2 == NULL) {
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