Fix a bug of not setting enforce_single_del_contracts (#10027)

Summary:
Before this PR, BuildDBOptions() does not set a newly-added option, i.e.
enforce_single_del_contracts, causing OPTIONS files to contain incorrect
information.

Pull Request resolved: https://github.com/facebook/rocksdb/pull/10027

Test Plan:
make check
Manually check OPTIONS file.

Reviewed By: ltamasi

Differential Revision: D36556125

Pulled By: riversand963

fbshipit-source-id: e1074715b22c328b68c19e9ad89aa5d67d864bb5

options/options_helper.cc

@@ -184,6 +184,8 @@ DBOptions BuildDBOptions(const ImmutableDBOptions& immutable_db_options,
   options.checksum_handoff_file_types =
       immutable_db_options.checksum_handoff_file_types;
   options.lowest_used_cache_tier = immutable_db_options.lowest_used_cache_tier;
+  options.enforce_single_del_contracts =
+      immutable_db_options.enforce_single_del_contracts;
   return options;
 }
 

options/options_settable_test.cc

@@ -355,10 +355,11 @@ TEST_F(OptionsSettableTest, DBOptionsAllFieldsSettable) {
                              "write_dbid_to_manifest=false;"
                              "best_efforts_recovery=false;"
                              "max_bgerror_resume_count=2;"
-                             "bgerror_resume_retry_interval=1000000"
+                             "bgerror_resume_retry_interval=1000000;"
                              "db_host_id=hostname;"
                              "lowest_used_cache_tier=kNonVolatileBlockTier;"
-                             "allow_data_in_errors=false",
+                             "allow_data_in_errors=false;"
+                             "enforce_single_del_contracts=false;",
                              new_options));
 
   ASSERT_EQ(unset_bytes_base, NumUnsetBytes(new_options_ptr, sizeof(DBOptions),

test_util/testutil.cc

@@ -293,6 +293,7 @@ void RandomInitDBOptions(DBOptions* db_opt, Random* rnd) {
   db_opt->recycle_log_file_num = rnd->Uniform(2);
   db_opt->avoid_flush_during_recovery = rnd->Uniform(2);
   db_opt->avoid_flush_during_shutdown = rnd->Uniform(2);
+  db_opt->enforce_single_del_contracts = rnd->Uniform(2);
 
   // int options
   db_opt->max_background_compactions = rnd->Uniform(100);