16.20 - 16.50 - Hadoop Components JVM Tab - Teradata Viewpoint - Teradata Workload Management

Teradata® Viewpoint User Guide

Product
Teradata Viewpoint
Teradata Workload Management
Release Number
16.20
16.50
Release Date
July 2021
Content Type
User Guide
Publication ID
B035-2206-071K
Language
English (United States)

The JVM tab for Teradata Hadoop master node and data node displays detailed information about heap memory, non-heap memory, and thread counts.

Heap Memory

Heap Memory Description
Used Amount of memory currently used to store Java objects
Committed Amount of allocated memory for Java object storage
Total Configured maximum size of Java heap

Non-Heap Memory

Non-Heap Memory Description
Used Amount of memory currently used by Java to store loaded classes and other metadata
Committed Amount of allocated memory for Java loaded classes and other metadata storage
Total Configured maximum size of Java non-heap

Thread Counts

Thread Counts Description
New Amount of threads created but not started
Runnable Amount of threads executing
Blocked Amount of threads waiting for a monitor lock
Waiting Amount of threads waiting indefinitely for another thread to perform an action
Timed Waiting Amount of threads waiting for a specified wait time for another thread to perform an action
Terminated Amount of threads that can no longer execute