MRS 2.1.0.1 Patch Description

**Table 1** Basic information
Patch Version	MRS 2.1.0.1
Release Date	2020-02-12
Resolved Issues	List of the resolved issues in MRS 2.1.0.1: MRS Manager The return results of Hive SQL statements submitted by V2 jobs have been optimized, and the issue that V2 jobs fail to be submitted using an agency token has been solved. MRS big data components HiveServer out of memory (OOM) has been solved for MRS Hive: HIVE-10970 and HIVE-22275.
Compatibility with Other Patches	None

During the installation of MRS 2.1.0.1 patches, MRS Manager and Hive are restarted. During the restart, the services are temporarily unavailable.

After MRS 2.1.0.1 patches are installed, log in to the Master1 node of the MRS cluster and delete the job directory in HDFS.

For a cluster with Kerberos authentication disabled, run the following command to delete the job directory in HDFS:
hdfs dfs -rm -r /mrs/mrsjob/hive
For a cluster with Kerberos authentication enabled, perform the following operations to delete the job directory in HDFS:
1. Run the following command and enter the password to perform authentication.
  kinit hdfs
2. Run the following command to delete the job directory in HDFS:
  hdfs dfs -rm -r /mrs/mrsjob/hive