How to use

containerIsAlive

method

in

org.apache.hadoop.yarn.server.nodemanager.DefaultContainerExecutor

@Override
public boolean isContainerProcessAlive(String user, String pid)
  throws IOException {
 return containerIsAlive(pid);
}

@Override
public boolean isContainerProcessAlive(String user, String pid)
  throws IOException {
 return containerIsAlive(pid);
}

@Override
public boolean isContainerAlive(ContainerLivenessContext ctx)
  throws IOException {
 String pid = ctx.getPid();
 return containerIsAlive(pid);
}

@Override
public boolean isContainerAlive(ContainerLivenessContext ctx)
  throws IOException {
 String pid = ctx.getPid();
 return containerIsAlive(pid);
}

@Override
public boolean signalContainer(String user, String pid, Signal signal)
  throws IOException {
 LOG.debug("Sending signal " + signal.getValue() + " to pid " + pid
   + " as user " + user);
 if (!containerIsAlive(pid)) {
  return false;
 }
 try {
  killContainer(pid, signal);
 } catch (IOException e) {
  if (!containerIsAlive(pid)) {
   return false;
  }
  throw e;
 }
 return true;
}

@Override
public boolean signalContainer(String user, String pid, Signal signal)
  throws IOException {
 LOG.debug("Sending signal " + signal.getValue() + " to pid " + pid
   + " as user " + user);
 if (!containerIsAlive(pid)) {
  return false;
 }
 try {
  killContainer(pid, signal);
 } catch (IOException e) {
  if (!containerIsAlive(pid)) {
   return false;
  }
  throw e;
 }
 return true;
}

@Override
public boolean signalContainer(ContainerSignalContext ctx)
  throws IOException {
 String user = ctx.getUser();
 String pid = ctx.getPid();
 Signal signal = ctx.getSignal();
 if (LOG.isDebugEnabled()) {
  LOG.debug("Sending signal " + signal.getValue() + " to pid " + pid
    + " as user " + user);
 }
 if (!containerIsAlive(pid)) {
  return false;
 }
 try {
  killContainer(pid, signal);
 } catch (IOException e) {
  if (!containerIsAlive(pid)) {
   return false;
  }
  throw e;
 }
 return true;
}

@Override
public boolean signalContainer(ContainerSignalContext ctx)
  throws IOException {
 String user = ctx.getUser();
 String pid = ctx.getPid();
 Signal signal = ctx.getSignal();
 LOG.debug("Sending signal " + signal.getValue() + " to pid " + pid
   + " as user " + user);
 if (!containerIsAlive(pid)) {
  return false;
 }
 try {
  killContainer(pid, signal);
 } catch (IOException e) {
  if (!containerIsAlive(pid)) {
   return false;
  }
  throw e;
 }
 return true;
}