public void fromBytes(byte[] bytes) throws IOException, ClassNotFoundException {
    readExternal(new ObjectInputStream(new ByteArrayInputStream(bytes)));
  }
For de-serialization

@param bytes
@throws IOException
@throws ClassNotFoundException
iotdb-core/datanode/src/main/java/org/apache/iotdb/db/queryengine/execution/operator/source/relational/aggregation/approximate/StreamSummary.java