gaogao110 opened a new issue #5398:
URL: https://github.com/apache/dolphinscheduler/issues/5398
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**Describe the bug**
Flink Job can't stop on the web
**To Reproduce**
Steps to reproduce the behavior, for example:
1. start a flink task and flink task is running
2. Click on 'stop'
3. But the task did not stop
4. See worker log error :
kill -9 null
details
`[INFO] 2021-04-26 19:21:00.192
org.apache.dolphinscheduler.server.worker.processor.TaskKillProcessor:[87] -
received kill command : TaskKillRequestCommand{taskInstanceId=40}
[INFO] 2021-04-26 19:21:00.481
org.apache.dolphinscheduler.server.worker.processor.TaskKillProcessor:[120] -
process id:12268, cmd:sudo kill -9
[ERROR] 2021-04-26 19:21:00.572
org.apache.dolphinscheduler.server.worker.processor.TaskKillProcessor:[132] -
kill task error
org.apache.dolphinscheduler.common.shell.AbstractShell$ExitCodeException:
Usage:
kill [options] <pid|name> [...]
Options:
-a, --all do not restrict the name-to-pid conversion to
processes
with the same uid as the present process
-s, --signal <sig> send specified signal
-q, --queue <sig> use sigqueue(2) rather than kill(2)
-p, --pid print pids without signaling them
-l, --list [=<signal>] list signal names, or convert one to a name
-L, --table list signal names and numbers
-h, --help display this help and exit
-V, --version output version information and exit
For more details see kill(1).
at
org.apache.dolphinscheduler.common.shell.AbstractShell.runCommand(AbstractShell.java:209)
at
org.apache.dolphinscheduler.common.shell.AbstractShell.run(AbstractShell.java:124)
`
**There is no non-null validation in the code**
**Expected behavior**
fix bug
**Which version of Dolphin Scheduler:**
-[1.3.5]
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