[t:3218] Try to write a big-block test. Refs #3218.

git-svn-id: file:///svn/toku/tokudb@28258 c7de825b-a66e-492c-adef-691d508d4ae1

newbrt/block_allocator.c

@@ -74,8 +74,8 @@ destroy_block_allocator (BLOCK_ALLOCATOR *bap) {
 static void
 grow_blocks_array_by (BLOCK_ALLOCATOR ba, u_int64_t n_to_add) {
     if (ba->n_blocks + n_to_add > ba->blocks_array_size) {
-	u_int64_t new_size = ba->n_blocks + n_to_add;
-	u_int64_t at_least = ba->blocks_array_size * 2;
+	int new_size = ba->n_blocks + n_to_add;
+	int at_least = ba->blocks_array_size * 2;
 	if (at_least > new_size) {
 	    new_size = at_least;
 	}

newbrt/tests/test_block_allocator_merge.c

@@ -100,6 +100,21 @@ test_merge_n_m (u_int64_t n, u_int64_t m, int mode)
     toku_free(ma);
 }
 
+static void
+test_big_merge (void) {
+    u_int64_t twoG = 1024LL * 1024LL * 1024LL * 2;
+    u_int64_t an = twoG;
+    u_int64_t bn = 1;
+    struct block_allocator_blockpair *MALLOC_N(an+bn, a);
+    struct block_allocator_blockpair *MALLOC_N(bn,    b);
+    for (u_int64_t i=0; i<an; i++) a[i].offset=i+1;
+    b[0].offset = 0;
+    block_allocator_merge_blockpairs_into(an, a, bn, b);
+    for (u_int64_t i=0; i<an+bn; i++) assert(a[i].offset=i);
+    toku_free(a);
+    toku_free(b);
+}
+
 int main (int argc __attribute__((__unused__)), char *argv[] __attribute__((__unused__))) {
     test_merge_n_m(4, 4, 0);
     test_merge_n_m(16, 16, 0);
@@ -112,5 +127,6 @@ int main (int argc __attribute__((__unused__)), char *argv[] __attribute__((__un
     test_merge_n_m(too_big, too_big);
     test_merge_n_m(1, too_big, 0);
 #endif
+    test_big_merge();
     return 0;
 }