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https://issues.apache.org/jira/browse/MAPREDUCE-7193?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16793047#comment-16793047
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David Mollitor commented on MAPREDUCE-7193:
-------------------------------------------

IOExcepton being thrown 
[here|https://github.com/apache/hadoop/blob/trunk/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/java/org/apache/hadoop/mapreduce/lib/input/CombineFileInputFormat.java#L200-L213]

> Review of CombineFile Code
> --------------------------
>
>                 Key: MAPREDUCE-7193
>                 URL: https://issues.apache.org/jira/browse/MAPREDUCE-7193
>             Project: Hadoop Map/Reduce
>          Issue Type: Improvement
>          Components: client
>    Affects Versions: 3.2.0
>            Reporter: David Mollitor
>            Assignee: David Mollitor
>            Priority: Minor
>         Attachments: MAPREDUCE-7193.1.patch
>
>
> I am looking to experiment with combing files a bit, but first started doing 
> some maintenance work:
> * Use Java 8 facilities
> * General clean up
> * Remove use of checked IOException ("Signals that an I/O exception of some 
> sort has occurred.") for validation errors
> https://docs.oracle.com/javase/8/docs/api/index.html?java/io/IOException.html



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