hbase-user mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From Asaf Mesika <asaf.mes...@gmail.com>
Subject Re: Calculating size in HBase.
Date Sun, 14 Jul 2013 19:59:11 GMT
If you get KeyValue object by the client, then you have its size for free
(it's the size of its internal byte array) - so why is it time consuming?


On Fri, Jul 5, 2013 at 2:23 AM, Bikash Agrawal <er.bikash21@gmail.com>wrote:

> Hi ,
>
> Need to calculate data size in HBase. I can do it by using KV length. But
> it is time consuming with huge data block.
> HFile looks better solution but still I have question with HFile, HFile
> will give size of data block. What if I have limit in scan[ ] object start
> row and end row. And those range can be some where in two different HFile.
> To calculate exact size I need to use loop, which is again inefficient.
> Actually, I am trying to run map reduce using HBase as source. I need to
> know what is data size. I am trying to do some performance evaluation.
> Still I can do some approximation calculation, looking at map-reduce input.
> It is always better to know exact size.
>
> Do you know how can do calculate data size in HBASE.
>
>
>
>
>
> --
> With Best Regards
> Bikash Agrawal
> Web/Software Developer
> Mobile: +47 92502701
> www.bikashagrawal.com.np
>

Mime
  • Unnamed multipart/alternative (inline, None, 0 bytes)
View raw message