The Overview tab for Teradata Hadoop jobtracker displays detailed information about MapReduce jobs, slots, and tasks. The Overview tab is accessed by clicking the JOBTRACKER row under Components Info.
Jobs
| Jobs | Description | |
|---|---|---|
| Current | Running | Number of MapReduce jobs currently executing in the system |
| Waiting | Number of MapReduce jobs queued to run | |
| Cumulative (Last Hour) | Submitted | Number of MapReduce jobs submitted in the last hour |
| Completed | Number of MapReduce jobs that completed successfully in the last hour | |
Slots (Current)
| Slots | Description |
|---|---|
| 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 |
Tasks (Cumulative - Last Hour)
| Tasks | Description |
|---|---|
| Map Tasks Launched | Number of map tasks submitted to run in the MapReduce cluster in the last hour |
| Map Tasks Completed | Number of map tasks that completed successfully in the MapReduce cluster in the last hour |
| Map Tasks Failed | Number of map tasks that did not complete successfully in the MapReduce cluster in the last hour |
| Reduce Tasks Launched | Number of reduce tasks submitted to run in the MapReduce cluster in the last hour |
| Reduce Tasks Completed | Number of reduce tasks that completed successfully in the MapReduce cluster in the last hour |
| Reduce Tasks Failed | Number of reduce tasks did not complete successfully in the MapReduce cluster in the last hour |