Register signal handler to log termination due to SIGTERM, SIGHUP and SIGINT (control-c)

[LiebingYu]

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Motivation

During the upgrade of the Fluss cluster, we found that the TabletServer was repeatedly performing controlled shutdowns without any error logs. After investigation, we discovered that the actual reason was that the TabletServer was being killed due to failed Kubernetes health checks. If we add some logs related to termination, it will help us to locate such issues more easily.

Kafka already supports similar logs: https://github.com/apache/kafka/blob/trunk/clients/src/main/java/org/apache/kafka/common/utils/LoggingSignalHandler.java

Solution

No response

Anything else?

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Willingness to contribute

• I'm willing to submit a PR!