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https://issues.apache.org/jira/browse/IMPALA-12737?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Manish Maheshwari reassigned IMPALA-12737:
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Assignee: Michael Smith
> Include List of Referenced Columns in Query Log Table
> -----------------------------------------------------
>
> Key: IMPALA-12737
> URL: https://issues.apache.org/jira/browse/IMPALA-12737
> Project: IMPALA
> Issue Type: Bug
> Reporter: Manish Maheshwari
> Assignee: Michael Smith
> Priority: Major
> Labels: workload-management
>
> In the Impala query log table where completed queries are stored, add a list
> of all columns andthat were referenced in the query. The purpose behind this
> functionality is for to know which columns are part of
> * Select clause
> * Where clause
> * Join clause
> * Aggegrate clause
> With this information, we will feed into compute stats command to collect
> stats only on the required columns that are using in joins / filters and
> aggegrates and not on all the table columns.
> The information can be collected as an array of
> [db1.table1.column1,db1.table1.column2]
>
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