Github user pwendell commented on the pull request:
https://github.com/apache/spark/pull/1481#issuecomment-50978548
The best way might be to do something like this.
```
/**
* Alias for WriterMetrics for compatibility reasons
*/
@DeveloperApi
class ShuffleWriteMetrics extends WriterMetrics
/**
* :: DeveloperApi ::
* Metrics pertaining to data written through a BlockObjectWriter.
*/
@DeveloperApi
private[spark] class WriterMetrics extends Serializable {
/**
* Number of bytes written for the this task
*/
var shuffleBytesWritten: Long = _
/**
* Time the task spent blocking on writes to disk or buffer cache, in
nanoseconds
*/
var shuffleWriteTime: Long = _
}
```
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