[LENS-417] Query metrics on prepare are not working

• Type: Bug
• Status: Closed
• Priority: Critical
• Resolution: Fixed
• Affects Version/s: 2.1
• Fix Version/s: 2.1
• Component/s: api, driver-jdbc, server
• Assignee: Amareshwari Sriramadasu
• Reporter: Amareshwari Sriramadasu
• Created: 18/Mar/15 04:52
• Updated: 24/Apr/15 11:24
• Resolved: 18/Mar/15 09:44

Description

When query metrics are enabled on prepare query, seeing following issues :

lens-shell>prepQuery explain cube select id,name from sample_dim
Explain FAILED:A metric named lens.MethodMetricGauge.5a82d69f-8968-44f4-af08-cb4a6d65b12a-HiveDriver-org.apache.lens.driver.cube.RewriteUtil-rewriteQuery already exists

The above happens because the driver config merge went wrong.
Once it is fixed seeing the below :

lens-shell>prepQuery  explain cube select id,name from sample_dim
Command failed javax.ws.rs.InternalServerErrorException: HTTP 500 A metric named lens.MethodMetricGauge.3d83e617-68a4-4695-ac5e-801392b0b9bc-JDBCDriver-columnar-sql-rewrite already exists

This happens because prepare happens once for validate and once for prepare.