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Hive, mail # user - Is it possible hiveserver both be a server and a client of itself?


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Re: Is it possible hiveserver both be a server and a client of itself?
Amr Awadallah 2009-05-14, 02:35

I don't think that would work, where would you store the meta-data for
the meta-data?

Min Zhou wrote:
> Hi  Ashish,
> Thank you for your swift reply. I guess it's HiveServer code inherit
> the metastore thrift api. HiveServer provide metadata service by
> itself,  not call another metastore server,  and Hive.class talks to
> the HiveServer to get the metadata.
> Regards,
> Min
>
> On Thu, May 14, 2009 at 9:19 AM, Ashish Thusoo <[EMAIL PROTECTED]
> <mailto:[EMAIL PROTECTED]>> wrote:
>
>     Apologies for the delay Min..
>      
>     The HiveServer code calls the metastore thrift api to get the
>     metadata. The Hive.class in ql also talks to the metastore api to
>     get the metadata. Not sure if I follow your question though?
>      
>     Ashish
>
>     ------------------------------------------------------------------------
>     *From:* Min Zhou [mailto:[EMAIL PROTECTED]
>     <mailto:[EMAIL PROTECTED]>]
>     *Sent:* Wednesday, May 13, 2009 6:07 PM
>     *To:* hive-user
>     *Subject:* Re: Is it possible hiveserver both be a server and a
>     client of itself?
>
>     Is there anyone can answer my question?
>     Thanks in advanced!
>
>     On Sun, May 10, 2009 at 12:00 AM, Min Zhou <[EMAIL PROTECTED]
>     <mailto:[EMAIL PROTECTED]>> wrote:
>
>         Hi guys,
>
>         I found that HiveServer can fetch metadata thourgh Hive class
>         after
>         generated a task like DDLTask, and meanwhile Hive class is a
>         client
>         who ask HiveServer for metadata. So I guess it may be possible
>         hiveserver both be a server and a client of itself, am I right?
>
>
>         Thanks,
>         Min
>         --
>         My research interests are distributed systems, parallel
>         computing and
>         bytecode based virtual machine.
>
>         My profile:
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>         My blog:
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>
>
>
>
>     --
>     My research interests are distributed systems, parallel computing
>     and bytecode based virtual machine.
>
>     My profile:
>     http://www.linkedin.com/in/coderplay
>     My blog:
>     http://coderplay.javaeye.com
>
>
>
>
> --
> My research interests are distributed systems, parallel computing and
> bytecode based virtual machine.
>
> My profile:
> http://www.linkedin.com/in/coderplay
> My blog:
> http://coderplay.javaeye.com