BigQuery performance: Is this correct? -


folks, i'm using bigquery superfast database analytics queries, i'm disappointed performance.

let me show numbers:

  • just 1 table @ "from" clause
  • select 15 fields group each, 5 fields sum()
  • total table rows: 3.7 millions
  • total rows returned: 830k

when execute query on bigquery's console, takes 1 minute process. ok you? expecting return in 2 seconds... if execute query on columnar database, sybase iq, takes less 2 seconds.

big query highly scalable database, before being "super fast" database. it's designed process huge amount of data distributing processing among several different machines using technique named dremel. because it's designed use several machines , parallel processing, should expect have super-scalability performance.

for example: analyzing wikipedia revisions in 5-10 seconds isn't bad, it? smaller table take same time.

sybase iq installed in single database , doesn't use dremel. said, it's going faster big query in many scenarios...as designed.

cheers!


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