private boolean setBecoming() {
    synchronized (this) {
      return requestPrimaryState(BECOMING_HOSTING);
    }
  }
Sets becoming primary to true. Returns true if the state of becoming was changed. Returns false
if becoming was already equal to true. Caller should do nothing if false is returned.
geode-core/src/main/java/org/apache/geode/internal/cache/BucketAdvisor.java