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https://issues.apache.org/jira/browse/TRAFODION-2137?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15404843#comment-15404843
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ASF GitHub Bot commented on TRAFODION-2137:
-------------------------------------------
Github user DaveBirdsall commented on a diff in the pull request:
https://github.com/apache/incubator-trafodion/pull/634#discussion_r73241623
--- Diff: core/sql/arkcmp/CmpStoredProc.cpp ---
@@ -363,7 +361,7 @@ NABoolean
CmpSPOutputFormat::getColumnDesc(SP_FIELDDESC_STRUCT* fDesc,
{
// convert ElemDDLColViewDef into CatColumn, then column_desc
if ( !ElemDDLColDef2ColumnDescStruct
- (elemDDL, tableDesc_->body.table_desc.tablename, colsDesc) )
+ (elemDDL, tableDesc_->tableDesc()->tablename, colsDesc) )
--- End diff --
Why not make tableDesc_ an object of type TrafTableDesc * and skip the cast?
> 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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