@Test
    public void statisticsTest() throws Exception {
        // put
        putTest();

        // close db
        Method closeRocksDB = this.kvStore.getClass().getDeclaredMethod("closeRocksDB");
        closeRocksDB.setAccessible(true);
        closeRocksDB.invoke(this.kvStore);
        Thread.sleep(5000);

        // open db
        Method openRocksDB = this.kvStore.getClass().getDeclaredMethod("openRocksDB", RocksDBOptions.class);
        openRocksDB.setAccessible(true);
        openRocksDB.invoke(this.kvStore, super.dbOptions);

        // get
        getTest();
    }
Test method: {@link RocksRawKVStore#delete(List, KVStoreClosure)}
jraft-rheakv/rheakv-core/src/test/java/com/alipay/sofa/jraft/rhea/storage/rocksdb/RocksKVStoreTest.java