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From Uber Slacker <cubeslac...@gmail.com>
Subject Re: CLI, HiveServer2, Beeline
Date Fri, 28 Mar 2014 16:55:33 GMT
Thanks Prasad! This is helping.

A newb question about Beeline and embedded:
So when Beeline is being used as a thin client, it's making JDBC calls to
the HiveServer2. HiveServer2 is then interacting with the Hive driver.
Hopefully that understanding is correct.
Now when HiveServer2 is in embedded mode, do we need HiveServer2 service
even to be running, or can Beeline interact with the Hive driver without
going through HiveServer2? Can you give me a little more insight on what is
actually going on during embedded mode?

Thanks much!


On Fri, Mar 28, 2014 at 11:47 AM, Prasad Mujumdar <prasadm@cloudera.com>wrote:

> Hello Uber,
>
>    Please see the comments inline.
>
> thanks
> Prasad
>
>
>
> On Fri, Mar 28, 2014 at 8:28 AM, Uber Slacker <cubeslacker@gmail.com>wrote:
>
>> Hi folks. I'm trying to wrap my head around the latest Hive architecture
>> (as of 0.12 at least). From what I've gathered:
>>
>> - HiveServer2 is the new Thrift based Hive server.
>>
>> - We can use Thrift, JDBC, and ODBC tools to connect to HiveServer2.
>>
>> - Beeline is an included CLI that connects to HiveServer2 via JDBC
>>
>> - HiveServer1 sounds like it is deprecated, though it's still available
>> to run if you want.
>>
>> Are those understandings correct?
>>
> That's correct. Note that JDBC driver for HiveServer2 is part of Apache
> Hive distribution. The ODBC is not. There are some third party ODBC driver
> available that work with HiveServer2. You can find more details of clients
> for HiveServer2 on the at
> https://cwiki.apache.org/confluence/display/Hive/HiveServer2+Clients
>
>
>> Some questions I have:
>> What about the original CLI? I was playing with a distribution and I'm
>> still able to use the CLI.Will this be deprecated in favor of Beeline? Or
>> will both be available going forward?
>>
> The original CLI is still available. In the last contributor meetup, there
> was a discussion about deprecating both old HiveServer and CLI. It might
> get deprecating in some future release, we are not sure.
>
>
>>
>> When would you use the CLI vs Beeline?
>>
>
>> Does the CLI require HiveServer1 to operate? My understanding is that it
>> doesn't and that the CLI only works in embedded mode.
>>
> CLI can work in both embedded mode as well as a client to old HiveServer1.
> Beeline has pretty much at feature parity of CLI. Beeline can also work as
> an embedded Hive or as a thin client to HiveServer2.
> At this point you should be able to use Beeline as a command line tool for
> all Hive use cases.
>
>
>
>> Thanks much for any info!
>>
>
>

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