[ https://issues.apache.org/jira/browse/IGNITE-4106?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15693220#comment-15693220 ]
ASF GitHub Bot commented on IGNITE-4106: ---------------------------------------- GitHub user AMashenkov opened a pull request: https://github.com/apache/ignite/pull/1278 IGNITE-4106: SQL: parallelize sql queries over cache local partitions Indexes splitted You can merge this pull request into a Git repository by running: $ git pull https://github.com/gridgain/apache-ignite ignite-4106-2 Alternatively you can review and apply these changes as the patch at: https://github.com/apache/ignite/pull/1278.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 #1278 ---- commit cede430c27f1bc73a3fd61a3569c164d16869816 Author: Andrey V. Mashenkov <andrey.mashen...@gmail.com> Date: 2016-11-18T12:19:33Z Merged commit e8329f93003c77d1070cf88be3cbaf19e7845656 Author: Andrey V. Mashenkov <andrey.mashen...@gmail.com> Date: 2016-11-18T12:47:05Z index splitted commit 4e88be252ce35482ac4b885e8e97b7fa16d3e53b Author: Andrey V. Mashenkov <andrey.mashen...@gmail.com> Date: 2016-11-24T12:46:15Z Merge remote-tracking branch 'apache/master' into ignite-4106-2 # Conflicts: # modules/indexing/src/main/java/org/apache/ignite/internal/processors/query/h2/twostep/GridMergeIndex.java ---- > 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: 1.6, 1.7 > Reporter: Andrew Mashenkov > Assignee: Andrew Mashenkov > Labels: performance > Fix For: 2.0 > > 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)