[jira] [Closed] (TRAFODION-2137) Improve metadata access time during query compilation

["Roberta Marton (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/TRAFODION-2137?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Roberta Marton closed TRAFODION-2137.
-------------------------------------
    Resolution: Fixed

Fix delivered

> Improve metadata access time during query compilation
> -----------------------------------------------------
>
>                 Key: TRAFODION-2137
>                 URL: https://issues.apache.org/jira/browse/TRAFODION-2137
>             Project: Apache Trafodion
>          Issue Type: Improvement
>            Reporter: Anoop Sharma
>            Assignee: Anoop Sharma
>
> When a trafodion object is accessed for the first time in a session, information about it is read from metadata.
> Multiple metadata tables are read to retrieve information about the
> objects being used in the query.
> Once metadata info is read about a table, it is cached in compiler memory. Another query accessing the same object gets it from compiler metadata
> cache.
> This results in the first query compile performance to be slower than the
> subsequent queries accessing the same objects.
> This JIRA is to improve performance of first access of an object in
> a query.



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