void logWaitOnOperationsWarning(Logger alertLogger, long warnMS) {
      alertLogger.warn("This thread has been stalled for {} milliseconds waiting for "
          + "current operations to complete.", warnMS);
    }
wait for the current operations being sent on views prior to the joining of the given member
to be placed on communication channels before returning

@since GemFire 5.1
geode-core/src/main/java/org/apache/geode/distributed/internal/DistributionAdvisor.java