[Bug] Docker signal handling not working

[fschulze-dtm]

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Version

iotdb 1.3.1-standalone

Describe the bug and provide the minimal reproduce step

When stoping a docker container running the apache/iotdb:1.3.1-standalone image the SIGTERM signal handling trap is not executed leading to a non graceful shut down. This is because the entrypoint.sh script uses exec which destroys signal handlers using trap.

Furthermore, the function that should be executed at SIGTERM 'on_stop' defined in entrypoint.sh has the if statement "$start_what" != "all".` Therfore in standalone mode the corresponding graceful shutdown is not executed.

To reproduce run the docker container and then stop it.

What did you expect to see?

The on_stop function defined in entrypoint.sh is executed when the docker container is stopped providing a graceful shutdown with FLUSH.

What did you see instead?

Rapid shut down without proper SIGNAL handling and without execution of the on_stop function.

Anything else?

No response

Are you willing to submit a PR?

• I'm willing to submit a PR!

[github-actions]

Hi, this is your first issue in IoTDB project. Thanks for your report. Welcome to join the community!

[CritasWang]

Is there no problem with the logic here

if [[ "$start_what" != "confignode" ]]; then
        echo "###### manually flush ######";
        start-cli.sh -e "flush;" || true
        stop-datanode.sh
        echo "##### done ######";
    else
        stop-confignode.sh;
    fi