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https://issues.apache.org/jira/browse/THRIFT-110?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12625789#action_12625789
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Bryan Duxbury commented on THRIFT-110:
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I was just thinking the same thing a little while ago. I think that you're 
right, and the user doesn't need to specify. This is especially the case if we 
have extra bits in the field type that we can use as the "code" to indicate 
whether it's a regular int, vint, or zigzag.

> A more compact format 
> ----------------------
>
>                 Key: THRIFT-110
>                 URL: https://issues.apache.org/jira/browse/THRIFT-110
>             Project: Thrift
>          Issue Type: Improvement
>            Reporter: Noble Paul
>
> Thrift is not very compact in writing out data as (say protobuf) . It does 
> not have the concept of variable length integers and various other 
> optimizations possible . In Solr we use a lot of such optimizations to make a 
> very compact payload. Thrift has a lot common with that format.
> It is all done in a single class
> http://svn.apache.org/viewvc/lucene/solr/trunk/src/java/org/apache/solr/common/util/NamedListCodec.java?revision=685640&view=markup
> The other optimizations include writing type/value  in same byte, very fast 
> writes of Strings, externalizable strings etc 
> We could use a thrift format for non-java clients and I would like to see it 
> as compact as the current java version

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