calvinjiang commented on issue #4834:
URL:
https://github.com/apache/dolphinscheduler/issues/4834#issuecomment-880612727
@Yanwenjingcn
I encountered the same error like yours when I was stopping a task that's
the type of shell.
---------------------------
[INFO] 2021-07-15 16:18:43.324
org.apache.dolphinscheduler.server.worker.processor.TaskKillProcessor:[95] -
received kill command : TaskKillRequestCommand{taskInstanceId=230}
[ERROR] 2021-07-15 16:18:43.328
org.apache.dolphinscheduler.server.worker.processor.TaskKillProcessor:[136] -
kill task error
java.io.IOException: Cannot run program "pstree": error=2, 没有那个文件或目录
at java.lang.ProcessBuilder.start(ProcessBuilder.java:1048)
at
org.apache.dolphinscheduler.common.shell.AbstractShell.runCommand(AbstractShell.java:145)
at
org.apache.dolphinscheduler.common.shell.AbstractShell.run(AbstractShell.java:124)
at
org.apache.dolphinscheduler.common.shell.ShellExecutor.execute(ShellExecutor.java:127)
at
org.apache.dolphinscheduler.common.shell.ShellExecutor.execCommand(ShellExecutor.java:104)
at
org.apache.dolphinscheduler.common.shell.ShellExecutor.execCommand(ShellExecutor.java:87)
at
org.apache.dolphinscheduler.common.utils.OSUtils.exeShell(OSUtils.java:442)
at
org.apache.dolphinscheduler.common.utils.OSUtils.exeCmd(OSUtils.java:431)
at
org.apache.dolphinscheduler.server.utils.ProcessUtils.getPidsStr(ProcessUtils.java:421)
at
org.apache.dolphinscheduler.server.worker.processor.TaskKillProcessor.doKill(TaskKillProcessor.java:126)
at
org.apache.dolphinscheduler.server.worker.processor.TaskKillProcessor.process(TaskKillProcessor.java:97)
at
org.apache.dolphinscheduler.remote.handler.NettyServerHandler.lambda$processReceived$0(NettyServerHandler.java:129)
at
java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
at java.util.concurrent.FutureTask.run(FutureTask.java:266)
at
java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
at
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
at java.lang.Thread.run(Thread.java:748)
Caused by: java.io.IOException: error=2, 没有那个文件或目录
at java.lang.UNIXProcess.forkAndExec(Native Method)
at java.lang.UNIXProcess.<init>(UNIXProcess.java:247)
at java.lang.ProcessImpl.start(ProcessImpl.java:134)
at java.lang.ProcessBuilder.start(ProcessBuilder.java:1029)
... 16 common frames omitted
---------------------
Cause:
This error should be caused by missing the command of pstree in your OS.
Solution:
You need to install it in your OS. Next line maybe useful for you:
sudo yum -y install psmisc
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