[jira] [Created] (IMPALA-12737) Include List of Referenced Columns in Query Log Table

["Manish Maheshwari (Jira)" <ji...@apache.org>]

Manish Maheshwari created IMPALA-12737:
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             Summary: 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


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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