hbase-user mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From bharath vissapragada <bharathvissapragada1...@gmail.com>
Subject Re: Indexed Table in Hbase
Date Mon, 17 Aug 2009 15:26:19 GMT
But i have read somewhere that Secondary indexes are somewhat slow compared
to normal Hbase tables ..Does that effect the performance ?

Also do you know the type of index created on the column(i mean Hash type or
Btree etc)

On Mon, Aug 17, 2009 at 8:30 PM, Kirill Shabunov <e2k_1@yahoo.com> wrote:

> Hi!
>
> As far as I understand you are talking about the secondary indexes. Yes,
> they can be used to quickly get the rowkey by a value in the indexed column.
>
> --Kirill
>
>
> bharath vissapragada wrote:
>
>> Hi all ,
>>
>> I have gone through the IndexedTableAdmin classes in Hbase 0.19.3 API ..
>>  I
>> have seen some methods used to create an Indexed Table (on some column)..
>> I
>> have some doubts regarding the same ...
>>
>> 1) Are these somewhat similar to Hash indexes(in RDBMS) where i can easily
>> lookup a column value and find it's corresponding rowkey(s)
>> 2) Can i find any performance gain when i use IndexedTable to search for a
>> paritcular column value .. instead of scanning an entire normal HTable ..
>>
>> Kindly clarify my doubts
>>
>> Thanks in advance
>>
>>

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