code: private synchronized void init(AlluxioConfiguration alluxioConf) {
      mJobMasterInquireClient = MasterInquireClient.Factory.createForJobMaster(alluxioConf);
      mJobMasterClientPool =
          new JobMasterClientPool(JobMasterClientContext
              .newBuilder(ClientContext.create(alluxioConf)).build());
    }
docs: Initializes the context. Only called in the factory methods and reset.