Summary View Metrics
| Metric | Description |
|---|---|
| Components Down | Number of components not started |
| Map Tasks Running |
|
| Reduce Tasks Running |
|
| HDFS Max Node I/O | Highest I/O level in bytes on any node in the HDFS system |
| HDFS Disk Usage | Percentage of space being used |
MapReduce Metrics
| Metric | Description |
|---|---|
| Jobs Running | Number of MapReduce jobs currently executing |
| Jobs Completed | Number of MapReduce jobs that completed successfully |
| Jobs Failed | Number of MapReduce jobs that failed to complete successfully |
| Jobtracker Up since | Timestamp when the jobtracker service started |
| Jobtracker Heap | Percentage of heap space used in the jobtracker JVM |
| Jobtracker UI | Open web interface for the service in new window |
| Map slots Occupied | Number of map slots occupied in the MapReduce cluster |
| Map slots Reserved | Number of map slots reserved in the MapReduce cluster |
| Reduce slots Occupied | Number of reduce slots occupied in the MapReduce cluster |
| Reduce slots Reserved | Number of reduce slots reserved in the MapReduce cluster |
| Tasktrackers Live | Number of tasktrackers currently running |
| Tasktrackers Total | Number of tasktrackers available on the system |
HDFS Metrics
| Metric | Description |
|---|---|
| Capacity Usage | Percentage of used space to overall storage capacity |
| Datanodes Live | Number of datanode processes currently running |
| Datanodes Dead | Number of datanode processes that are currently dead |
| Files + Directories Total | Total number of files and directories in HDFS |
| Namenode Up since | Timestamp when the namenode service started |
| Namenode Heap | Percentage of heap space used in the namenode JVM |
| Namenode UI | Open web interface for the service in new window |
HBase Metrics
| Metric | Description |
|---|---|
| Load Average | Average region load per region server |
| Region servers Live | Number of region servers that are currently running |
| Region servers Total | Number of region servers that are configured |
| Master server Up since | Timestamp when the master server started |
| Master server Heap | Percentage of heap space used in the master server JVM |
| Master server UI | Open web interface for the service in new window |
Other Services Metrics
| Metric | Description |
|---|---|
| Up | Hadoop Services currently running |
| Down | Hadoop Services not running |