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From "Andrew Purtell (JIRA)" <j...@apache.org>
Subject [jira] Commented: (HBASE-1015) pure C and C++ client libraries
Date Fri, 12 Feb 2010 17:23:28 GMT

    [ https://issues.apache.org/jira/browse/HBASE-1015?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12833077#action_12833077

Andrew Purtell commented on HBASE-1015:

The intent of this issue is to build a fat client in C, wrap in C++, and have it talk directly
to the master and regionservers without any gateway/connector process as intermediary. The
C++ wrapper would have similar class structure and API as o.a.h.h.client. No need for any
Java except on the servers. No intermediary to be a potential bottleneck.

The notion has a reasonable argument but it's a lot of work. The rationale for taking it on
has become less convincing over time as the Thrift and REST connectors have been satisfying
enough for users. There was a fair amount of interest in the 0.19 days but that has waned
as far as I can see. 

> pure C and C++ client libraries
> -------------------------------
>                 Key: HBASE-1015
>                 URL: https://issues.apache.org/jira/browse/HBASE-1015
>             Project: Hadoop HBase
>          Issue Type: New Feature
>          Components: client
>            Reporter: Andrew Purtell
>            Priority: Minor
>             Fix For: 0.22.0
> If via HBASE-794 first class support for talking via Thrift directly to HMaster and HRS
is available, then pure C and C++ client libraries are possible. 
> The C client library would wrap a Thrift core. 
> The C++ client library can provide a class hierarchy quite close to o.a.h.h.client and,
ideally, identical semantics. It  should be just a wrapper around the C API, for economy.
> Internally to my employer there is a lot of resistance to HBase because many dev teams
have a strong C/C++ bias. The real issue however is really client side integration, not a
fundamental objection. (What runs server side and how it is managed is a secondary consideration.)

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