Github user zhichao-li commented on the pull request:
https://github.com/apache/spark/pull/9097#issuecomment-154919462
`CombineHiveInputFormat` or `CombineFileInputFormat` would have the
restriction that it would always suppose the combined inputformat is a subclass
of FileInputformat, but would not the same case if we can combine on InputSplit.
``` scala
+public class CombineSplit implements InputSplit {
+ private InputSplit[] splits;
+ private long totalLen;
+ private String[] locations;
```
VS
``` scala
public class CombineFileSplit extends InputSplit implements Writable {
private Path[] paths;
private long[] startoffset;
private long[] lengths;
private String[] locations;
private long totLength;
```
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