Boundary HBase Region Server Plugin

Collects metrics from a HBase Region Server.

Prerequisites

OS	Linux	Windows	SmartOS	OS X
Supported	v	v	v	v

Runtime	node.js	Python	Java
Required	+		+

• How to install node.js?
• How to install Java?
• JMX Metrics are enabled (see Plugin Setup below)

Plugin Setup

Enable JMX Metrics

1. Enable JMX metrics in HBase by following this guide here.

Set JAVA_HOME Environment Variable

1. Ensure the that the JAVA_HOME environment variable is by running the following on a Linux/UNIX platform:

   $ echo $JAVA_HOME`

Or on Windows from a cmd shell: bash % set JAVA_HOME 2. If JAVA_HOME is not set then configure appropriately for the target operating system and re-verify.

Plugin Configuration Fields

Field Name	Description
Hostname	The hostname or IP address of the JMX Region server
Port	The port of the JMX Region server
Username	If the JMX endpoint is password protected, what username should graphdat use when calling it.
Password	If the JMX endpoint is password protected, what password should graphdat use when calling it.
Poll Seconds	How often should the plugin poll the JMX endpoint
Source	The Source to display in the legend for the HBase data. It will default to the hostname of the server

Metrics Collected

Metric Name	Description
HBase Cache Read Ratio	The cache-hit ratio for reads configured to look in the cache
HBase Compaction Targets	The number of Stores in the Region Server that have been targeted for compaction
HBase Flush Queue	The number of enqueued regions in the MemStore awaiting flush
HBase Local Block Ratio	The percentage of HDFS blocks that are local to this Region Server
HBase Memstore Size	The sum of all the memstore sizes in this Region Server
HBase Regions in a Region Server	The number of regions served by the Region Server.
HBase Reads	The number of read requests for this Region Server.
HBase Slow Writes	The number of slow HLog append writes for this Region Server, where slow is > 1 second.
HBase Memory	The amount of memory used by the RegionServer.
HBase Writes	The number of write requests for this Region Server.