MRS 1.9.3.1 Patch Description

**Table 1** Basic information
Patch Version	MRS 1.9.3.1
Release Date	2020-09-04
Resolved Issues	MRS Manager Solved the problem that Task nodes fail to be removed from a custom cluster. MRS big data components Solved the problem that the version of the adapter-hadoop-wrapper-file-system package in the Hive and Spark paths is incorrect. Solved the problem that multiple namespaces saved on FusionInsight Manager of HBase do not take effect in the background. Added HDFSWrapper to support AbstractFileSystem.
Compatibility with Other Patches	None

During the installation of the MRS 1.9.3.1 patch, MRS Manager is restarted, and Hadoop, HDFS, Hive, Spark, and related dependent services are restarted in rolling mode. During the restart of MRS Manager, services are temporarily unavailable but services are not interrupted during the rolling restart.
After installing the MRS 1.9.3.1 patch, you need to download and install all clients again, including the original clients of the Master node and the clients used by other nodes of VPC (that is, the clients that you set up).
- For how to fully update the original client of the active and standby master nodes, see Updating Client Configurations (Version 2.x or Earlier).
- For details about how to fully install the clients you set up, see Installing a Client (MRS 2.x or Earlier).
- You are advised to back up the old clients before reinstalling the new ones.
- If you have modified client configurations based on the service scenario, modify them again after reinstalling the clients.