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https://issues.apache.org/jira/browse/LENS-630?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14620150#comment-14620150
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Rajat Khandelwal commented on LENS-630:
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Before this change, QueryCost was a concrete class, HiveDriver was always
returning QueryCost(resourceUsage=1, execTime=1) and JDBCDriver was always
returning QueryCost(resourceUsage=0,execTime=0).
After this change, HiveDriver will return QueryCostTO(resourceUsage=weighted
cost of partitions queried, execTime=null) and JDBCDriver will return
QueryCostTO(resourceUsage=0, execTime=null)
> Using Duration and Fact Weight Based Query Cost Calculator for Hive Driver
> --------------------------------------------------------------------------
>
> Key: LENS-630
> URL: https://issues.apache.org/jira/browse/LENS-630
> Project: Apache Lens
> Issue Type: Improvement
> Components: api, driver-hive, driver-jdbc, server
> Reporter: Himanshu Gahlaut
> Assignee: Rajat Khandelwal
> Labels: incompatible
> Fix For: 2.3
>
> Attachments: LENS-630_12.patch
>
>
> Along with this, we can add a new field in QueryCost to return the query cost
> calculated by the implementation. normalizedQueryCost could be one name for
> that field.
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