IJournaler (Emissary 8.21.0 API)

All Superinterfaces:

AutoCloseable, Closeable, Rollable

All Known Implementing Classes:

JournaledCoalescer
```
public interface IJournaler
extends Rollable
```
A Rollable implementation that uses a journal to record offsets of completed writes to a pool of outputs. The Journal serves as a write ahead log and records positions of all open file handles until rolled.

Method Summary

All Methods Instance Methods Abstract Methods
Modifier and Type	Method	Description
`KeyedOutput`	`getOutput()`	Returns and KeyedOutput object containing the final output file and can be written to as either an OutputStream or a SeekableByteChannel.

Methods inherited from interface java.io.Closeable
close

Methods inherited from interface emissary.roll.Rollable
isRolling, roll

- Method Detail
  - getOutput
```
KeyedOutput getOutput()
               throws IOException
```
    Returns and KeyedOutput object containing the final output file and can be written to as either an OutputStream or a SeekableByteChannel. This method will block if objects from the pool have been exhausted.
    
    Returns:
    
    a KeyedOutput object
    
    Throws:
    
    IOException - If there is some I/O problem.