public static ThreadPoolExecutor defaultPool(String memberName, int procThreads) {
    return defaultPool(memberName, procThreads, KEEP_ALIVE_MILLIS_DEFAULT);
  }
Default thread pool for the procedure
@param procThreads the maximum number of threads to allow in the pool
hbase-server/src/main/java/org/apache/hadoop/hbase/procedure/ProcedureMember.java