[jira] [Created] (EXEC-71) Changes for EXEC-34 (Race condition prevent watchdog working using ExecuteStreamHandler) hang endlessly if the command cannot be found

["Dominik Stadler (JIRA)" <ji...@apache.org>]

Dominik Stadler created EXEC-71:
-----------------------------------

             Summary: Changes for EXEC-34 (Race condition prevent watchdog working using ExecuteStreamHandler) hang endlessly if the command cannot be found
                 Key: EXEC-71
                 URL: https://issues.apache.org/jira/browse/EXEC-71
             Project: Commons Exec
          Issue Type: Bug
    Affects Versions: 1.1
            Reporter: Dominik Stadler


The following test hangs endlessly for me because the ExecuteWatchdog will never get "processStarted = true" because starting an non-existing process will never lead to the started flag.

{code}
@Test
	public void testCommonsExecHang() throws Exception {
        CommandLine command = new CommandLine("someunexistingcommand");
        DefaultExecutor executor = new DefaultExecutor();

        ExecuteWatchdog watchdog = new ExecuteWatchdog(ExecuteWatchdog.INFINITE_TIMEOUT);
        executor.setWatchdog(watchdog);

        DefaultExecuteResultHandler resultHandler = new DefaultExecuteResultHandler() {
			@Override
			public void onProcessFailed(ExecuteException e) {
		        System.out.println("Process did not stop gracefully, had exception '" + e.getMessage() + "' while executing process");
				super.onProcessFailed(e);
			}
        };

        executor.execute(command, null, resultHandler);

        // this hangs!!
        watchdog.isWatching();

        watchdog.destroyProcess();
	}
{code}

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