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From Gunnar Tapper <tapper.gun...@gmail.com>
Subject Re: HBase Directories
Date Fri, 12 Feb 2016 06:50:56 GMT
Thanks Selva

On Thu, Feb 11, 2016 at 11:38 PM, Selva Govindarajan <
selva.govindarajan@esgyn.com> wrote:

> /bulkload - Used by Trafodion bulk load command - Load into tablename
> command and also used as the temp. directory to create links to the actual
> hfiles for snapshot scanning.
>
> Selva
>
> -----Original Message-----
> From: Gunnar Tapper [mailto:tapper.gunnar@gmail.com]
> Sent: Thursday, February 11, 2016 10:18 PM
> To: dev@trafodion.incubator.apache.org
> Subject: HBase Directories
>
> Hi,
>
>
>
> I’m trying to understand the usage of the following HBase directories:
>
>
>
> ·         */hbase-staging*: Directory where staging files are written to
> during bulk load. Bulk load bypasses the write-ahead log to enable faster
> loading of data by landing data into HDFS files, which are then read into
> HBase tables directly. Refer to
> https://hbase.apache.org/book.html#arch.bulk.load for more information.
>
> ·         */bulkload: *I got nothing.
>
> ·         */lobs: *Obviously, related to large-object processing but how?
>
>
>
> Also, these directory names are hard-coded in the installer. Are they
> hardcoded elsewhere or could they; for example, be prefixed with
> “trafodion-“
> in a future release?
>
>
>
> ·         /trafodion-hbase-staging
>
> ·         /trafodion-bulkload
>
> ·         /trafodion-lobs
>
> OOverall, I'd recommend that directories and other objects use a prefix to
> reduce the likelihood of colliding with existing names.
>
> --
> Thanks,
>
> Gunnar
> *If you think you can you can, if you think you can't you're right.*
>



-- 
Thanks,

Gunnar
*If you think you can you can, if you think you can't you're right.*

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