Shell { public boolean isTimedOut() { return timedOut.get(); } protected  Shell(); protected  Shell(long interval); protected  Shell(long interval, boolean redirectErrorStream); @Deprecated static boolean isJava7OrAbove(); static boolean isJavaVersionAtLeast(int version); static void checkWindowsCommandLineLength(String...commands); static String[] getGroupsCommand(); static String[] getGroupsForUserCommand(final String user); static String[] getGroupsIDForUserCommand(final String user); static String[] getUsersForNetgroupCommand(final String netgroup); static String[] getGetPermissionCommand(); static String[] getSetPermissionCommand(String perm, boolean recursive); static String[] getSetPermissionCommand(String perm,
                                                 boolean recursive,
                                                 String file); static String[] getSetOwnerCommand(String owner); static String[] getSymlinkCommand(String target, String link); static String[] getReadlinkCommand(String link); static String[] getCheckProcessIsAliveCommand(String pid); static String[] getSignalKillCommand(int code, String pid); static String getEnvironmentVariableRegex(); static File appendScriptExtension(File parent, String basename); static String appendScriptExtension(String basename); static String[] getRunScriptCommand(File script); static String getHadoopHome(); static File getQualifiedBin(String executable); static String getQualifiedBinPath(String executable); static boolean hasWinutilsPath(); static String getWinUtilsPath(); static File getWinUtilsFile(); static boolean checkIsBashSupported(); String getEnvironment(String env); Process getProcess(); int getExitCode(); Thread getWaitingThread(); boolean isTimedOut(); static String execCommand(String ... cmd); static String execCommand(Map<String, String> env, String[] cmd,
      long timeout); static String execCommand(Map<String,String> env, String ... cmd); static void destroyAllShellProcesses(); static Set<Shell> getAllShells(); static Long getMemlockLimit(Long ulimit); static final Logger LOG; static final String SYSPROP_HADOOP_HOME_DIR; static final String ENV_HADOOP_HOME; static final int WINDOWS_MAX_SHELL_LENGTH; @Deprecated
  static final int WINDOWS_MAX_SHELL_LENGHT; static final String USER_NAME_COMMAND; static final Object WindowsProcessLaunchLock; static final OSType osType; static final boolean WINDOWS; static final boolean SOLARIS; static final boolean MAC; static final boolean FREEBSD; static final boolean LINUX; static final boolean OTHER; static final boolean PPC_64; static final String ENV_NAME_REGEX; static final String SET_PERMISSION_COMMAND; static final String SET_OWNER_COMMAND; static final String SET_GROUP_COMMAND; static final String LINK_COMMAND; static final String READ_LINK_COMMAND; @Deprecated
  static final String WINUTILS; static final boolean isSetsidAvailable; static final String TOKEN_SEPARATOR_REGEX; }
@Test public void testShellCommandTimeout() throws Throwable { Assume.assumeFalse(WINDOWS); String rootDir = rootTestDir.getAbsolutePath(); File shellFile = new File(rootDir, "timeout.sh"); String timeoutCommand = "sleep 4; echo \"hello\""; Shell.ShellCommandExecutor shexc; try (PrintWriter writer = new PrintWriter(new FileOutputStream(shellFile))) { writer.println(timeoutCommand); writer.close(); } FileUtil.setExecutable(shellFile, true); shexc = new Shell.ShellCommandExecutor(new String[]{shellFile.getAbsolutePath()}, null, null, 100); try { shexc.execute(); } catch (Exception e) { } shellFile.delete(); assertTrue("Script did not timeout" , shexc.isTimedOut()); }