Help Center/ MapReduce Service/ Developer Guide (Normal_3.x)/ Development Specifications/ Development Environment Construction/ Rules
Updated on 2022-09-14 GMT+08:00
View PDF

Rules

The development environment should be constructed strictly following the development guide. The required components should be downloaded from the client instead of open-source websites.

Based on Hadoop open-source components, MRS enhances its functionality and security. Huawei does not update the versions of these components because component dependencies are complicated. Components sharing the same name with those downloaded from the open-source website cannot run on MRS.

The time difference between the client and the cluster must be confirmed.

Ensure that the time difference between the client and the MRS cluster is less than 5 minutes.

The IBM JDK environment must be prepared.

If the application is developed using IBM JDK and the keytab file of the cluster needs to be used for authentication, check whether the IBM JDK version meets the requirements. Otherwise, exceptions may occur.