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https://issues.apache.org/jira/browse/EXEC-65?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15081389#comment-15081389
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Siegfried Goeschl commented on EXEC-65:
---------------------------------------
Wrote a few tests but I'm unable to reproduce the problem :-)
> Watchdog can't destroy 'sudo' and 'sleep'
> -----------------------------------------
>
> Key: EXEC-65
> URL: https://issues.apache.org/jira/browse/EXEC-65
> Project: Commons Exec
> Issue Type: Bug
> Affects Versions: 1.1
> Environment: RedHat Enterprise Linux 64bit, JDK 1.6.0_25 64bit.
> {code}
> $ uname -a
> Linux demo-vrs1-happdb1.lts.stgt.vrs.cust.disy.net 2.6.9-42.ELsmp #1 SMP Wed
> Jul 12 23:27:17 EDT 2006 i686 i686 i386 GNU/Linux
> {code}
> {code}
> $ java -version
> java version "1.6.0_25"
> Java(TM) SE Runtime Environment (build 1.6.0_25-b06)
> Java HotSpot(TM) Server VM (build 20.0-b11, mixed mode)
> {code}
> Reporter: Rusi Filipov
> Assignee: Siegfried Goeschl
> Priority: Critical
> Attachments: EXEC_65.patch
>
>
> I want to run a command from a shell script with make sure the process will
> be destroyed after a timeout, especially if it asks for user input or
> contains sleep commands.
> {code:title=Java}
> DefaultExecutor executor = new DefaultExecutor();
> executor.setStreamHandler(new PumpStreamHandler(System.out, System.err));
> ExecuteWatchdog watchDog = new ExecuteWatchdog(3000);
> executor.setWatchdog(watchDog);
> CommandLine command = new CommandLine("./client.sh");
> int exitValue = executor.execute(command);
> System.out.println(exitValue);
> {code}
> I run this code on the server like this:
> {code}
> java -cp .:commons-exec-1.1.jar App
> {code}
> *Problem 1.* I want to run {{sudo}} in order to execute a script as a
> different user:
> {code:title=client.sh}
> #!/bin/bash
> sudo -u occ02 /apps/occ02/catalina_base/bin/restart-occ.sh
> {code}
> In case of a misconfiguration of {{/etc/sudoers}} this prompts me for a
> password.
> {code}
> Password:
> {code}
> And terminates only after about 5 minutes, not 3 seconds:
> {code}
> Exception in thread "main" org.apache.commons.exec.ExecuteException: Process
> exited with an error: 143 (Exit value: 143)
> at
> org.apache.commons.exec.DefaultExecutor.executeInternal(DefaultExecutor.java:377)
> at
> org.apache.commons.exec.DefaultExecutor.execute(DefaultExecutor.java:160)
> at
> org.apache.commons.exec.DefaultExecutor.execute(DefaultExecutor.java:147)
> at App.destroy2(App.java:51)
> at App.main(App.java:21)
> {code}
> Only if I use the {{sudo -S ...}} the process is killed after about 4 seconds:
> {code}
> Password:
> Exception in thread "main" org.apache.commons.exec.ExecuteException: Process
> exited with an error: 1 (Exit value: 1)
> at
> org.apache.commons.exec.DefaultExecutor.executeInternal(DefaultExecutor.java:377)
> at
> org.apache.commons.exec.DefaultExecutor.execute(DefaultExecutor.java:160)
> at
> org.apache.commons.exec.DefaultExecutor.execute(DefaultExecutor.java:147)
> at App.destroy2(App.java:51)
> at App.main(App.java:21)
> {code}
> *Problem 2.* I want to prevent a too long {{sleep}}:
> {code:title=client.sh}
> #!/bin/bash
> sleep 900
> {code}
> The Process just hangs! After 15 minutes the process terminates with this
> error:
> {code}
> Exception in thread "main" org.apache.commons.exec.ExecuteException: Process
> exited with an error: 143 (Exit value: 143)
> at
> org.apache.commons.exec.DefaultExecutor.executeInternal(DefaultExecutor.java:377)
> at
> org.apache.commons.exec.DefaultExecutor.execute(DefaultExecutor.java:160)
> at
> org.apache.commons.exec.DefaultExecutor.execute(DefaultExecutor.java:147)
> at App.destroy2(App.java:51)
> at App.main(App.java:21)
> {code}
> If I run the {{sleep}} command directly from within Java without the
> shell-script, the process is destroyed on time:
> {code}
> DefaultExecutor executor = new DefaultExecutor();
> executor.setStreamHandler(new PumpStreamHandler(System.out, System.err));
> ExecuteWatchdog watchDog = new ExecuteWatchdog(3000);
> executor.setWatchdog(watchDog);
> CommandLine command = new CommandLine("sleep");
> command.addArgument("900");
> int exitValue = executor.execute(command);
> System.out.println(exitValue);
> {code}
> {code}
> Exception in thread "main" org.apache.commons.exec.ExecuteException: Process
> exited with an error: 143 (Exit value: 143)
> at
> org.apache.commons.exec.DefaultExecutor.executeInternal(DefaultExecutor.java:377)
> at
> org.apache.commons.exec.DefaultExecutor.execute(DefaultExecutor.java:160)
> at
> org.apache.commons.exec.DefaultExecutor.execute(DefaultExecutor.java:147)
> at App.destroy4(App.java:67)
> at App.main(App.java:23)
> {code}
> The problems were not visible when I tested on my development machine with
> Windows 7 64bit and JDK 1.6.0_25, 64bit. But now these issues are a serious
> barrier for using commons-exec in production.
> Btw, with the {{ProcessBuilder}} from the JDK the process is destroyed in
> both cases:
> {code}
> ProcessBuilder builder = new ProcessBuilder("./client.sh");
> Process process = builder.start();
> Thread.sleep(3000);
> process.destroy();
> {code}
> Best regards,
> Rusi
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