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From Denis Magda <dma...@gridgain.com>
Subject Re: Poor performance select query with jdbc
Date Tue, 07 Jun 2016 10:38:31 GMT

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In regards to your question try to increase
CacheConfiguration.setSqlOnheapRowCacheSize. It should enhance performance
on your side.


Hi all! 
I am testing sql performance with apache ignite 1.6. 
I have a data array with 12 million of rows in one table and a guery like
select count(1), f1,f2 from table1 where f3=? group by f1,f2 
Cache configuration: 
cacheCfg.setStartSize(10  1024  1024); 

Also there is an index for field f3. 

Such kind of request runs on one server with 10 nodes total 12 cpu and 5Gb
each heap. Total 50Gb. 
Result time for this query about 19 seconds while the same query run on
Oracle (optimized table)  about 12 seconds. 
I used also ONHEAP_TIERED memory mode - result is a little better (12-13
Are there any ways to accelerate the result run time for this ? 

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