[PR] [Fix-16789] Fix flink job stop error when process has already exited [dolphinscheduler]

["KaiSong-UK (via GitHub)" <gi...@apache.org>]

KaiSong-UK opened a new pull request, #18289:
URL: https://github.com/apache/dolphinscheduler/pull/18289

   ## What is the purpose of the change
   
   fix #16789
   
   When stopping a Flink task through the DolphinScheduler page, if the Flink process has already exited automatically before the kill signal is sent, the pstree command in ProcessUtils.getPidList() throws an exception because the process no longer exists. This causes the kill() method to return false and log an error message, even though the process termination is actually the expected behavior.
   
   ## Brief changelog
   
   - Modified ProcessUtils.getPidList() to return an empty list when pstree fails (process has already exited), instead of throwing an exception
   - Changed the log level from error to warn with a more descriptive message indicating the process may have already exited
   
   ## Verifying this change
   
   When a Flink task process exits on its own before the stop command is issued, the kill operation will now succeed silently instead of reporting an error.
   
   ## Does this PR introduce breaking changes?
   
   No.


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Re: [PR] [Fix-16789] Fix flink job stop error when process has already exited [dolphinscheduler]

["SbloodyS (via GitHub)" <gi...@apache.org>]

SbloodyS closed pull request #18289: [Fix-16789] Fix flink job stop error when process has already exited
URL: https://github.com/apache/dolphinscheduler/pull/18289


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Re: [PR] [Fix-16789] Fix flink job stop error when process has already exited [dolphinscheduler]

["SbloodyS (via GitHub)" <gi...@apache.org>]

SbloodyS commented on PR #18289:
URL: https://github.com/apache/dolphinscheduler/pull/18289#issuecomment-4527306692

   Please abide by the PR specification before submitting PR and submit it after the local test has passed. Using AI to blindly submit PR will weaken the trust value of the community.


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