FrameFilePartialFetch (druid-processing 28.0.0 API)

java.lang.Object
- org.apache.druid.frame.file.FrameFilePartialFetch

```
public class FrameFilePartialFetch
extends Object
```
Response object for FrameFileHttpResponseHandler. The handler mutates this object on each chunk of a chunked response. When the response is done, this object is returned to the caller.

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`com.google.common.util.concurrent.ListenableFuture<?>`	`backpressureFuture()`	Future that resolves when it is a good time to request the next chunk of the frame file.
`long`	`getBytesRead()`	Number of bytes read so far by this request.
`Throwable`	`getExceptionCaught()`	The exception that was encountered, if `isExceptionCaught()` is true.
`boolean`	`isExceptionCaught()`	Whether an exception was encountered during response processing.
`boolean`	`isLastFetch()`

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- Method Detail
  - isLastFetch
```
public boolean isLastFetch()
```
  - getExceptionCaught
```
public Throwable getExceptionCaught()
```
    The exception that was encountered, if isExceptionCaught() is true.
    
    Throws:
    
    IllegalStateException - if no exception was caught
  - isExceptionCaught
```
public boolean isExceptionCaught()
```
    Whether an exception was encountered during response processing.
  - getBytesRead
```
public long getBytesRead()
```
    Number of bytes read so far by this request.
  - backpressureFuture
```
public com.google.common.util.concurrent.ListenableFuture<?> backpressureFuture()
```
    Future that resolves when it is a good time to request the next chunk of the frame file. Must only be called once, because the future is cleared once it is returned.