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https://issues.apache.org/jira/browse/PIG-1117?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12798909#action_12798909
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Alan Gates commented on PIG-1117:
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Question to other pig committers:
This code looks fine. However, it creates a separate section of piggybank for
hive udfs. At contrib/piggybank/java/src/main, it creates a java-hiveudfs
directory in addition to the existing java directory. Also the hive udfs and
tests are not run as a default part of the build and test targets. There are
instead separate hive-build and hive-test targets in ant. I believe all this
is done to avoid requiring the fetch of hive jars for the basic piggybank
build. Since the jars are fetched via ivy I don't see this as a big deal.
Thus I would vote for moving this into the main part of piggybank rather than
having a separate directory for it. Do others have opinions on this?
> Pig reading hive columnar rc tables
> -----------------------------------
>
> Key: PIG-1117
> URL: https://issues.apache.org/jira/browse/PIG-1117
> Project: Pig
> Issue Type: New Feature
> Affects Versions: 0.7.0
> Reporter: Gerrit Jansen van Vuuren
> Assignee: Gerrit Jansen van Vuuren
> Fix For: 0.7.0
>
> Attachments: HiveColumnarLoader.patch, HiveColumnarLoaderTest.patch,
> PIG-1117.patch, PIG-117-v.0.6.0.patch, PIG-117-v.0.7.0.patch
>
>
> I've coded a LoadFunc implementation that can read from Hive Columnar RC
> tables, this is needed for a project that I'm working on because all our data
> is stored using the Hive thrift serialized Columnar RC format. I have looked
> at the piggy bank but did not find any implementation that could do this.
> We've been running it on our cluster for the last week and have worked out
> most bugs.
>
> There are still some improvements to be done but I would need like setting
> the amount of mappers based on date partitioning. Its been optimized so as to
> read only specific columns and can churn through a data set almost 8 times
> faster with this improvement because not all column data is read.
> I would like to contribute the class to the piggybank can you guide me in
> what I need to do?
> I've used hive specific classes to implement this, is it possible to add this
> to the piggy bank build ivy for automatic download of the dependencies?
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