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Posted to dev@pig.apache.org by "Ted Malaska (JIRA)" <ji...@apache.org> on 2012/09/04 20:05:07 UTC
[jira] [Commented] (PIG-2494) Improvement to SequenceFileLoader
(NullWritable and Delimiter)
[ https://issues.apache.org/jira/browse/PIG-2494?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13447870#comment-13447870 ]
Ted Malaska commented on PIG-2494:
----------------------------------
Hey Dmitriy,
I know it's been a long time but I'm going to try to finish this Issue # now.
I just reviewed the SequenceFileLoader code in elephant-bird and it looks like the major piece to bring over is the idea of the converter and it's ability to transform the raw data and provide a schema for the outputting format.
This would add a lot of power to the existing implementation.
I'll start on this tonight.
> Improvement to SequenceFileLoader (NullWritable and Delimiter)
> --------------------------------------------------------------
>
> Key: PIG-2494
> URL: https://issues.apache.org/jira/browse/PIG-2494
> Project: Pig
> Issue Type: Improvement
> Components: piggybank
> Affects Versions: 0.9.1
> Environment: All
> Reporter: Ted Malaska
> Priority: Minor
> Labels: newbie, simple
> Attachments: SequenceFileLoader.java
>
>
> I wanted to add two features to SequenceFileLoader.
> 1. I added a delimiter so it will act more like PigStorage, in that it will Split the value if it is a type Text (chararray).
> 2. I added the option of the key being a NullWritable. I wanted to be able to process my Hive files in both Hive and Pig, but because my Hive sequence files have a NullWritable key I could not make this work with the current implementation of SequenceFileLoader.
> My change is attached to this Issue.
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