Collects metrics from a HBase Region Server.
| 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)
- Enable JMX metrics in HBase by following this guide here.
- Ensure the that the
JAVA_HOMEenvironment 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.
| 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 |
| 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. |