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https://issues.apache.org/jira/browse/DRILL-2261?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Chris Westin updated DRILL-2261:
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Fix Version/s: (was: 1.1.0)
1.2.0
> Replace HashMap<Integer, DataCollector> in IncomingBuffers with an array
> based data structure
> ---------------------------------------------------------------------------------------------
>
> Key: DRILL-2261
> URL: https://issues.apache.org/jira/browse/DRILL-2261
> Project: Apache Drill
> Issue Type: Improvement
> Components: Execution - Flow
> Affects Versions: 0.7.0
> Reporter: Venki Korukanti
> Assignee: Venki Korukanti
> Priority: Minor
> Fix For: 1.2.0
>
>
> Currently we have Map<Integer, DataCollector> which stores the mapping of
> major fragment id and DataCollector instance pairs. For every record batch
> arrived, we need to autobox primitive integer and hash. This is unnecessary
> cost, instead we could have a simpler array based structure like
> TIntArrayList (trove collection) or custom array based structure. Key value
> (in this case major fragment id) is between 0 and numStages - 1. numStages is
> not going to be a huge number. Utilizing this range we could either use
> TIntArrayList or custom array based structure.
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