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ASF GitHub Bot commented on IGNITE-4106: ---------------------------------------- GitHub user AMashenkov opened a pull request: https://github.com/apache/ignite/pull/1476 IGNITE-4106: SQL: parallelize sql queries over cache local partitions You can merge this pull request into a Git repository by running: $ git pull https://github.com/gridgain/apache-ignite ignite-4106 Alternatively you can review and apply these changes as the patch at: https://github.com/apache/ignite/pull/1476.patch To close this pull request, make a commit to your master/trunk branch with (at least) the following in the commit message: This closes #1476 ---- commit 5d0417c8cb0f95bc5506a41028b830b831f19863 Author: AMRepo <andrey.mashen...@gmail.com> Date: 2017-01-19T20:35:06Z Implemented commit e638a91eaba80c1f71c0b8a74a59cd5e32122ac2 Author: Andrey V. Mashenkov <andrey.mashen...@gmail.com> Date: 2017-01-20T10:54:21Z Minors: Styles & Javadoc commit 14066d16d429a236ff7bde3e4b5b2653343709c7 Author: Andrey V. Mashenkov <andrey.mashen...@gmail.com> Date: 2017-01-27T17:02:02Z Local queries over stripped indices fixed. ---- > SQL: parallelize sql queries over cache local partitions > -------------------------------------------------------- > > Key: IGNITE-4106 > URL: https://issues.apache.org/jira/browse/IGNITE-4106 > Project: Ignite > Issue Type: Improvement > Components: SQL > Affects Versions: 1.7 > Reporter: Andrew Mashenkov > Assignee: Andrew Mashenkov > Labels: performance > Fix For: 1.9 > > Attachments: 1node-4thread.jfr, 4node-1thread.jfr > > > If we run SQL query on cache partitioned over several cluster nodes, it will > be split into several queries running in parallel. But really we will have > one thread per query on each node. > So, for now, to improve SQL query performance we need to run more Ignite > instances or split caches manually. > It seems to be better to split local SQL queries over cache partitions, so we > would be able to parallelize SQL query on every single node and utilize CPU > more efficiently. -- This message was sent by Atlassian JIRA (v6.3.4#6332)