How to use

maybeInitBuilder

method

in

org.apache.hadoop.yarn.api.protocolrecords.impl.pb.RegisterApplicationMasterRequestPBImpl

@Override
public void setRpcPort(int port) {
 maybeInitBuilder();
 builder.setRpcPort(port);
}

@Override
public void setRpcPort(int port) {
 maybeInitBuilder();
 builder.setRpcPort(port);
}

@Override
public void setRpcPort(int port) {
 maybeInitBuilder();
 builder.setRpcPort(port);
}

@Override
public void setTrackingUrl(String url) {
 maybeInitBuilder();
 if (url == null) {
  builder.clearTrackingUrl();
  return;
 }
 builder.setTrackingUrl(url);
}

@Override
public void setPlacementConstraints(
  Map<Set<String>, PlacementConstraint> constraints) {
 maybeInitBuilder();
 if (constraints == null) {
  builder.clearPlacementConstraints();
 } else {
  removeEmptyKeys(constraints);
 }
 this.placementConstraints = constraints;
}

private void mergeLocalToProto() {
 if (viaProto) 
  maybeInitBuilder();
 mergeLocalToBuilder();
 proto = builder.build();
 viaProto = true;
}

@Override
public void setHost(String host) {
 maybeInitBuilder();
 if (host == null) {
  builder.clearHost();
  return;
 }
 builder.setHost(host);
}

 @Override
 public void setTrackingUrl(String url) {
  maybeInitBuilder();
  if (url == null) {
   builder.clearTrackingUrl();
   return;
  }
  builder.setTrackingUrl(url);
 }
}  

@Override
public void setHost(String host) {
 maybeInitBuilder();
 if (host == null) {
  builder.clearHost();
  return;
 }
 builder.setHost(host);
}

 @Override
 public void setTrackingUrl(String url) {
  maybeInitBuilder();
  if (url == null) {
   builder.clearTrackingUrl();
   return;
  }
  builder.setTrackingUrl(url);
 }
}  

@Override
public void setHost(String host) {
 maybeInitBuilder();
 if (host == null) {
  builder.clearHost();
  return;
 }
 builder.setHost(host);
}

private void mergeLocalToProto() {
 if (viaProto) 
  maybeInitBuilder();
 mergeLocalToBuilder();
 proto = builder.build();
 viaProto = true;
}

private void mergeLocalToProto() {
 if (viaProto) 
  maybeInitBuilder();
 mergeLocalToBuilder();
 proto = builder.build();
 viaProto = true;
}

private void addPlacementConstraintMap() {
 maybeInitBuilder();
 builder.clearPlacementConstraints();
 if (this.placementConstraints == null) {
  return;
 }
 List<YarnProtos.PlacementConstraintMapEntryProto> protoList =
   new ArrayList<>();
 for (Map.Entry<Set<String>, PlacementConstraint> entry :
   this.placementConstraints.entrySet()) {
  protoList.add(
    YarnProtos.PlacementConstraintMapEntryProto.newBuilder()
      .addAllAllocationTags(entry.getKey())
      .setPlacementConstraint(
        new PlacementConstraintToProtoConverter(
          entry.getValue()).convert())
      .build());
 }
 builder.addAllPlacementConstraints(protoList);
}