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From Thamizh <tceg...@yahoo.co.in>
Subject Re: Secondary index update issue
Date Wed, 07 Sep 2011 17:48:01 GMT
Hi,

Here is my sample row. I wanted to execute below 2 queries. CF:ip
1. get ip where ip=19268678;
2. get ip where domain='google.com';

Here both ip & domain has secondary indexes.

RowKey: 19268678
=> (column=country, value=in, timestamp=1315398995980)
=> (column=domain, value=google.com, timestamp=1315398995980)
=> (column=ip, value=19268678, timestamp=1315398995980)

What encoding format should I use?. Here I defined ip as LongType & domain as utf8.

When I upload data using above mentioned index type on CF definition then, above queries are
working sucessfully. Why?


Regards,

  Thamizhannal P

--- On Wed, 7/9/11, Jonathan Ellis <jbellis@gmail.com> wrote:

From: Jonathan Ellis <jbellis@gmail.com>
Subject: Re: Secondary index update issue
To: user@cassandra.apache.org
Date: Wednesday, 7 September, 2011, 7:29 PM

My guess would be you're querying using a different encoding and there
really is no data for your query as given.  Hard to say without more
details.

On Wed, Sep 7, 2011 at 8:13 AM, Thamizh <tcegrid@yahoo.co.in> wrote:
>
> Hi All,
>
> I have created KS & CF using cassandra-0.7.8 and inserted some rows and column values(around
1000 rows). Later, I wanted to index 2 column values. So, I issued 'update column family..'
command. After, when I query based on indexed value it says "Row does not found". After indexing
1. Issued nodetool flush 2.restarted Cassandra once. Though it is same. But, I could see some
XXX-Index.db file on cassandra data directory. What am I missing?
>
> Here are CF details,
>
> create column family ipinfo with column_type=Standard and
> default_validation_class =   UTF8Type and comparator=UTF8Type and
> keys_cached=25000 and rows_cached=5000 and column_metadata=[
> { column_name : country, validation_class : UTF8Type},
> { column_name : ip, validation_class : LongType},
> { column_name : domain, validation_class : UTF8Type },
> ];
>
> update column family ip with column_type=Standard and
> default_validation_class = UTF8Type and comparator=UTF8Type and
> keys_cached=25000 and rows_cached=5000 and column_metadata=[
> {column_name : country, validation_class : UTF8Type },
> {column_name : domain, validation_class : UTF8Type, index_type: KEYS},
> {column_name : ip, validation_class : LongType, index_type: KEYS}
> ];
>
> Any suggestions would be appreciated
>
> Regards,
> Thamizhannal P


--
Jonathan Ellis
Project Chair, Apache Cassandra
co-founder of DataStax, the source for professional Cassandra support
http://www.datastax.com

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