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From Jean-Marc Spaggiari <jean-m...@spaggiari.org>
Subject Re: RegionSplitter command
Date Thu, 17 Jan 2013 23:02:20 GMT
Hi Anil,

bin/hbase org.apache.hadoop.hbase.util.RegionSplitter -c 60 -f f1 test
HexStringSplit

is working for me.

So your 2nd line should work. I'm not sure if it's because of the
version since I'm using 0.94.4.

Can you upgrade your version and retry? Or you need to stay with 0.92.1?

JM

2013/1/17, anil gupta <anilgupta84@gmail.com>:
> Hi All,
>
> I am using HBase0.92.1. I am trying to run ycsb tests on my hbase cluster.
> But while running the load test with 40 threads i am getting hotspots on
> the RS that is hosting the Region of 'usertable'. Currently, the empty
> table only has one region. So, i want to pre-split my 'usertable' using the
> RegionSplitter utility.
> HexStringSplit is the splitting algorithm, 'c' is the name of the column
> family. I tried the following commands but they didnt work:
>
>    1. hbase org.apache.hadoop.hbase.util.RegionSplitter usertable
>    HexStringSplit -c 60 -f c
>    2. hbase org.apache.hadoop.hbase.util.RegionSplitter -c 60 -f c
>    usertable HexStringSplit
>
> Following is the output of above commands:
>
> usage: RegionSplitter <TABLE>
>  -c <region count>        Create a new table with a pre-split number of
>                           regions
>  -D <property=value>      Override HBase Configuration Settings
>  -f <family:family:...>   Column Families to create with new table.
>                           Required with -c
>  -h                       Print this usage help
>  -o <count>               Max outstanding splits that have unfinished
>                           major compactions
>  -r                       Perform a rolling split of an existing region
>     --risky               Skip verification steps to complete
>                           quickly.STRONGLY DISCOURAGED for production
>                           systems.
>
>
> Please let me know the proper command for RegionSplitter utility.
>
> --
> Thanks & Regards,
> Anil Gupta
>

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