TaskTracker (venice API)

All Known Subinterfaces:

DataWriterTaskTracker

All Known Implementing Classes:

CounterBackedMapReduceDataWriterTaskTracker, ReporterBackedMapReduceDataWriterTaskTracker, SparkDataWriterTaskTracker
```
public interface TaskTracker
```
An interface to report task health and track task progress for different execution engines

Field Summary

Fields
Modifier and Type Field Description

static float PROGRESS_COMPLETED

static float PROGRESS_NOT_SUPPORTED

Method Summary

All Methods Instance Methods Default Methods
Modifier and Type	Method	Description
`default float`	`getProgress()`	Get the progress of the task.
`default void`	`heartbeat()`	Report task heartbeat if the execution engine requires it

- Field Detail
  - PROGRESS_NOT_SUPPORTED
```
static final float PROGRESS_NOT_SUPPORTED
```
    See Also:
    
    Constant Field Values
  - PROGRESS_COMPLETED
```
static final float PROGRESS_COMPLETED
```
    See Also:
    
    Constant Field Values
- Method Detail
  - heartbeat
```
default void heartbeat()
```
    Report task heartbeat if the execution engine requires it
  - getProgress
```
default float getProgress()
```
    Get the progress of the task. If the engine supports fetching the progress, progress is represented as a number between 0 and 1 (inclusive). If the engine doesn't support fetching the progress, a value of -1 is returned.