How to use org.apache.flink.runtime.broadcast

private final BroadcastVariableManager bcVarManager = new BroadcastVariableManager();

public boolean decrementReference(BatchTask<?, ?> referenceHolder) {
  return decrementReferenceInternal(referenceHolder, true);
}

public void releaseReference(BroadcastVariableKey key, BatchTask<?, ?> referenceHolder) {
  BroadcastVariableMaterialization<?, ?> mat = variables.get(key);
  // release this reference
  if (mat.decrementReference(referenceHolder)) {
    // remove if no one holds a reference and no one concurrently replaced the entry
    variables.remove(key, mat);
  }
}

public void releaseReference(String name, int superstep, BatchTask<?, ?> referenceHolder) {
  BroadcastVariableKey key = new BroadcastVariableKey(referenceHolder.getEnvironment().getJobVertexId(), name, superstep);
  releaseReference(key, referenceHolder);
}

public void releaseAllReferencesFromTask(BatchTask<?, ?> referenceHolder) {
  // go through all registered variables 
  for (Map.Entry<BroadcastVariableKey, BroadcastVariableMaterialization<?, ?>> entry : variables.entrySet()) {
    BroadcastVariableMaterialization<?, ?> mat = entry.getValue();
    
    // release the reference
    if (mat.decrementReferenceIfHeld(referenceHolder)) {
      // remove if no one holds a reference and no one concurrently replaced the entry
      variables.remove(entry.getKey(), mat);
    }
  }
}

public void releaseReference(String name, int superstep, BatchTask<?, ?> referenceHolder) {
  BroadcastVariableKey key = new BroadcastVariableKey(referenceHolder.getEnvironment().getJobVertexId(), name, superstep);
  releaseReference(key, referenceHolder);
}

public boolean decrementReference(BatchTask<?, ?> referenceHolder) {
  return decrementReferenceInternal(referenceHolder, true);
}

public void releaseReference(BroadcastVariableKey key, BatchTask<?, ?> referenceHolder) {
  BroadcastVariableMaterialization<?, ?> mat = variables.get(key);
  
  // release this reference
  if (mat.decrementReference(referenceHolder)) {
    // remove if no one holds a reference and no one concurrently replaced the entry
    variables.remove(key, mat);
  }
}

public void releaseAllReferencesFromTask(BatchTask<?, ?> referenceHolder) {
  // go through all registered variables
  for (Map.Entry<BroadcastVariableKey, BroadcastVariableMaterialization<?, ?>> entry : variables.entrySet()) {
    BroadcastVariableMaterialization<?, ?> mat = entry.getValue();
    // release the reference
    if (mat.decrementReferenceIfHeld(referenceHolder)) {
      // remove if no one holds a reference and no one concurrently replaced the entry
      variables.remove(entry.getKey(), mat);
    }
  }
}

public void releaseReference(String name, int superstep, BatchTask<?, ?> referenceHolder) {
  BroadcastVariableKey key = new BroadcastVariableKey(referenceHolder.getEnvironment().getJobVertexId(), name, superstep);
  releaseReference(key, referenceHolder);
}

public boolean decrementReferenceIfHeld(BatchTask<?, ?> referenceHolder) {
  return decrementReferenceInternal(referenceHolder, false);
}

public void releaseReference(BroadcastVariableKey key, BatchTask<?, ?> referenceHolder) {
  BroadcastVariableMaterialization<?, ?> mat = variables.get(key);
  // release this reference
  if (mat.decrementReference(referenceHolder)) {
    // remove if no one holds a reference and no one concurrently replaced the entry
    variables.remove(key, mat);
  }
}

public void releaseAllReferencesFromTask(BatchTask<?, ?> referenceHolder) {
  // go through all registered variables
  for (Map.Entry<BroadcastVariableKey, BroadcastVariableMaterialization<?, ?>> entry : variables.entrySet()) {
    BroadcastVariableMaterialization<?, ?> mat = entry.getValue();
    // release the reference
    if (mat.decrementReferenceIfHeld(referenceHolder)) {
      // remove if no one holds a reference and no one concurrently replaced the entry
      variables.remove(entry.getKey(), mat);
    }
  }
}

public void releaseReference(String name, int superstep, BatchTask<?, ?> referenceHolder) {
  BroadcastVariableKey key = new BroadcastVariableKey(referenceHolder.getEnvironment().getJobVertexId(), name, superstep);
  releaseReference(key, referenceHolder);
}

public boolean decrementReferenceIfHeld(BatchTask<?, ?> referenceHolder) {
  return decrementReferenceInternal(referenceHolder, false);
}

public void releaseReference(BroadcastVariableKey key, BatchTask<?, ?> referenceHolder) {
  BroadcastVariableMaterialization<?, ?> mat = variables.get(key);
  // release this reference
  if (mat.decrementReference(referenceHolder)) {
    // remove if no one holds a reference and no one concurrently replaced the entry
    variables.remove(key, mat);
  }
}

public boolean decrementReferenceIfHeld(BatchTask<?, ?> referenceHolder) {
  return decrementReferenceInternal(referenceHolder, false);
}

public boolean decrementReference(BatchTask<?, ?> referenceHolder) {
  return decrementReferenceInternal(referenceHolder, true);
}

public boolean decrementReference(BatchTask<?, ?> referenceHolder) {
  return decrementReferenceInternal(referenceHolder, true);
}

public boolean decrementReferenceIfHeld(BatchTask<?, ?> referenceHolder) {
  return decrementReferenceInternal(referenceHolder, false);
}