private BinaryRowDataSerializerWrapper valueSerializer() {
    if (valueSerializerThreadLocal.get() == null) {
      valueSerializerThreadLocal.set(valueSerializer.clone());
    }
    return valueSerializerThreadLocal.get();
  }
Deleting the record in the rocksDB and cache if it exists.

@throws IOException if serialize the RowData variable <code>key</code> failed.
amoro-format-mixed/amoro-mixed-flink/amoro-mixed-flink-common/src/main/java/org/apache/amoro/flink/lookup/RocksDBRecordState.java