public void put(RowData joinKey, byte[] uniqueKeyBytes) throws IOException {
    byte[] joinKeyBytes = serializeKey(joinKey);
    putSecondaryCache(joinKeyBytes, uniqueKeyBytes);
  }
Serialize join key to bytes and put the join key bytes and unique key bytes in the cache.

@param joinKey the join key
@param uniqueKeyBytes the unique key bytes
@throws IOException if serialize the RowData variable failed.
amoro-format-mixed/amoro-mixed-flink/amoro-mixed-flink-common/src/main/java/org/apache/amoro/flink/lookup/RocksDBSetSpilledState.java