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https://issues.apache.org/jira/browse/CALCITE-3999?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Jesus Camacho Rodriguez updated CALCITE-3999:
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Summary: Simplify DialectPool implementation using Guava cache (was:
Simplify DialectPool implementation)
> Simplify DialectPool implementation using Guava cache
> -----------------------------------------------------
>
> Key: CALCITE-3999
> URL: https://issues.apache.org/jira/browse/CALCITE-3999
> Project: Calcite
> Issue Type: Improvement
> Components: core
> Reporter: Jesus Camacho Rodriguez
> Assignee: Jesus Camacho Rodriguez
> Priority: Major
>
> JdbcUtils contains a pool to cache SqlDialect objects. Currently, it relies
> on multiple maps and a synchronized {{get}} method. Although I am not very
> familiar with that code, it seems the implementation could be made simpler
> and more efficient by using a Guava cache. In addition, since we would not
> have a single synchronized get method, multiple threads could concurrently
> create dialects for distinct data sources.
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