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https://issues.apache.org/jira/browse/GIRAPH-93?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13425325#comment-13425325
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Jaeho Shin commented on GIRAPH-93:
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Based on Avery's initial work, I managed to make Giraph read and write Hive 
tables using HCatalog 0.4.0 and run vertex codes.  Under giraph-formats-contrib 
subproject, I added HCatalogInputFormat, HCatalogOutputFormat, and a 
HiveGiraphRunner which handles additional setup for GiraphJob.

However, this involves changes to HCatalog as well to let it publish jars to a 
local Maven repo, so submitting a patch for Giraph alone won't work. (need 
HCATALOG-132)  If there's interest, I'd like to post my minimal patch to 
hcatalog and instructions to build it.

Besides, I don't have a good minimal test yet, which seems to be tricky as 
well.  Please advise if you have a good idea on writing effective tests 
involving Hive or Pig.  Or, if it's OK, I want to post my patch without test 
code.
                
> Hive input / output format
> --------------------------
>
>                 Key: GIRAPH-93
>                 URL: https://issues.apache.org/jira/browse/GIRAPH-93
>             Project: Giraph
>          Issue Type: New Feature
>            Reporter: Avery Ching
>            Assignee: Avery Ching
>
> It would be great to be able to load/store data from/to Hive tables.  

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