hailong wang created FLINK-19691:
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Summary: Expose `CONNECTION_CHECK_TIMEOUT_SECONDS` as a
configurable option in Jdbc connector
Key: FLINK-19691
URL: https://issues.apache.org/jira/browse/FLINK-19691
Project: Flink
Issue Type: Improvement
Components: Connectors / JDBC
Affects Versions: 1.11.0
Reporter: hailong wang
Fix For: 1.12.0
Jdbc connector can check whether the connection is valid, and the timeout is 60
second [FLINK-16681].
But the fixed timeout of 60 second sometimes too long to wait. In some scenes,
I just want to wait for 5 second and fast failed and restarting if it is still
invalid.
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