[jira] [Created] (MAPREDUCE-7494) Fix potential file stream leaks caused by interruption

["Davin Tjong (Jira)" <ji...@apache.org>]

Davin Tjong created MAPREDUCE-7494:
--------------------------------------

             Summary: Fix potential file stream leaks caused by interruption
                 Key: MAPREDUCE-7494
                 URL: https://issues.apache.org/jira/browse/MAPREDUCE-7494
             Project: Hadoop Map/Reduce
          Issue Type: Bug
            Reporter: Davin Tjong


In LineRecordReader, we may open a filestream:
```
fileIn = FutureIO.awaitFuture(builder.build());
```
However, we may be interrupted or otherwise throw an error before `in` is initialized, for example here:
```
fileIn.seek(start);
```
If this happens, the caller has no way to close this file stream causing it to leak.



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