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https://issues.apache.org/jira/browse/MAPREDUCE-1360?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12999728#comment-12999728
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Harsh J Chouraria commented on MAPREDUCE-1360:
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This sounded interesting for me to work upon. So here's some questions after a 
brief investigation:

I investigated what goes on inside of the SkippingRecordReader but couldn't 
find any area that gets Writable limited. The sequence files for skipped 
records are created with the Key/Value classes which are then used to load 
their acceptable serialization classes. Which part of the skipping framework is 
Writable limited now?

> Record skipping should work with more serializations
> ----------------------------------------------------
>
>                 Key: MAPREDUCE-1360
>                 URL: https://issues.apache.org/jira/browse/MAPREDUCE-1360
>             Project: Hadoop Map/Reduce
>          Issue Type: Improvement
>            Reporter: Aaron Kimball
>
> Record skipping currently supports WritableSerialization, but cannot handle 
> non-class-based serialization systems (e.g., AvroSerialization). The record 
> skipping mechanism should be made compatible with the metadata-based 
> serialization configuration.

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