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This article introduces the relevant knowledge of "how to solve the error report of python connection clickhouse port". In the operation of actual cases, many people will encounter such a dilemma, so let the editor lead you to learn how to deal with these situations. I hope you can read it carefully and be able to achieve something!

Python connection clickhouse Port problem 8123 9000

Notice that two ports, 8123 and 9000, can be used to receive http and tcp protocols, respectively.

If you connect with jdbc, the port is 8123

If you connect with driver, the port is 9000

From clickhouse_driver import Clientclient = Client (host=host, port=port, user=user, password=password, database='default') client = get_client () client.execute ("show tables;") print (client.execute ("select * from test_arr")) client.disconnect ()

At this point, if you use port 8123, you will get the following error:

Clickhouse_driver.errors.UnexpectedPacketFromServerError: Code: 102. Unexpected packet from server 192.168.137.101 Unexpected packet from server 8123 (expected Hello or Exception, got Unknown packet)

Report an error to clickhouse

Clickhouse_driver.errors.UnexpectedPacketFromServerError: Code: 102

Today, use python to write an etl to synchronize data from mysql to clickhouse. The amount of data is less than 10 million, leading to the error above for a while. Then looked it up on the Internet: found that the document was clearly written:

Welcome to clickhouse-driver-clickhouse-driver 0.2.4 documentation

Originally, clickhouse provided two ports: 8123 and 9000.

Port 9000 is required to use native protocal, and then the port is modified successfully.

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