Hive

Component Java Heap CPU Disk
HiveServer 2 Single Connection 4 GB Minimum 4 dedicated cores

Minimum 1 disk

This disk is required for the following:

  • HiveServer2 log files
  • stdout and stderr output files
  • Configuration files
  • Operation logs stored in the operation_logs_dir directory, which is configurable
  • Any temporary files that might be created by local map tasks under the /tmp directory
2-10 connections 4-6 GB
11-20 connections 6-12 GB
21-40 connections 12-16 GB
41 to 80 connections 16-24 GB

Cloudera recommends splitting HiveServer2 into multiple instances and load balancing them once you start allocating more than 16 GB to HiveServer2. The objective is to adjust the size to reduce the impact of Java garbage collection on active processing by the service.

Set this value using the Java Heap Size of HiveServer2 in Bytes Hive configuration property.

Hive Metastore Single Connection 4 GB Minimum 4 dedicated cores

Minimum 1 disk

This disk is required so that the Hive metastore can store the following artifacts:

  • Logs
  • Configuration files
  • Backend database that is used to store metadata if the database server is also hosted on the same node
2-10 connections 4-10 GB
11-20 connections 10-12 GB
21-40 connections 12-16 GB
41 to 80 connections 16-24 GB

Set this value using the Java Heap Size of Hive Metastore Server in Bytes Hive configuration property.

Beeline CLI Minimum: 2 GB N/A N/A