void executeProcedure(long procId, long initiatingMasterActiveTime,
    RSProcedureCallable callable) {
    executorService
      .submit(new RSProcedureHandler(this, procId, initiatingMasterActiveTime, callable));
  }
For testing
@return whether all wal roll request finished for this regionserver
hbase-server/src/main/java/org/apache/hadoop/hbase/regionserver/HRegionServer.java