Why `timeout to get a connection from null:-1` error happened in session of Apache IoTDB?

The Apache IoTDB server and session is Version 1.0.1. The serssion API reflected an error: org.apache.iotdbrpc.loDBConnectionException: timeout to get a connection from null:-1, and get several warnings from session pool. How should I deal with this error?

Solution

The session of Version 1.1 of Apache IoTDB can solve this problem so you can try to update to this version, but note that this also needs to cooperate with the 1.1 Version of IoTDB server.

Is there a way to make Seaborn or Vincent interactive?
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