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HBase >> mail # user >> One column family, scan on value performance


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Kevin 2012-06-29, 16:20
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RE: One column family, scan on value performance
Hi Kevin
                    Can you pls give the performance numbers of both the ways here?

-Anoop-
________________________________________
From: Kevin [[EMAIL PROTECTED]]
Sent: Friday, June 29, 2012 9:50 PM
To: [EMAIL PROTECTED]
Subject: One column family, scan on value performance

Hi,

I am fooling around with HBase and I am doing experiment on Scan
performance. I made a table with a single column family and loaded all the
data into the table. I would expect a scan with a ValueFilter and to
perform the same as a scan with a ValueFilter and an added family (being
there is only one family anyways). The scan with just a ValueFilter under
performs the one with a ValueFilter and an added family by a good amount.
Why does specifying the column family in a table that only has one column
family improve the scanner's performance?

-Kevin
NEW: Monitor These Apps!
elasticsearch, apache solr, apache hbase, hadoop, redis, casssandra, amazon cloudwatch, mysql, memcached, apache kafka, apache zookeeper, apache storm, ubuntu, centOS, red hat, debian, puppet labs, java, senseiDB