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https://issues.apache.org/jira/browse/ASTERIXDB-2286?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Ali Alsuliman updated ASTERIXDB-2286:
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Affects Version/s: 0.9.4
> Parallel Sort Optimization
> --------------------------
>
> Key: ASTERIXDB-2286
> URL: https://issues.apache.org/jira/browse/ASTERIXDB-2286
> Project: Apache AsterixDB
> Issue Type: Improvement
> Components: COMP - Compiler, FUN - Functions, HYR - Hyracks
> Affects Versions: 0.9.4
> Reporter: Ali Alsuliman
> Assignee: Ali Alsuliman
> Priority: Major
> Labels: triaged
>
> The current plan for queries with ORDER BY clauses consists of two phases;
> sorting the data locally in each partition and then sort-merging the data in
> one single partition. Even though the local sort happens in parallel, this
> effort is wasted by the fact that the merge is happening at one partition. It
> is desired to remove the merge step and do a true parallel sort where data is
> range-partitioned across the cluster.
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