[CALCITE-1292] Druid metadata query is very slow

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 1.8.0
• Fix Version/s: 1.9.0
• Component/s: druid-adapter
• Assignee: Julian Hyde
• Reporter: Michael Spector
• Created: 15/Jun/16 06:14
• Updated: 27/Feb/24 22:23
• Resolved: 15/Jun/16 20:49

Description

Steps to reproduce:

sqlline> !connect jdbc:calcite:schemaFactory=org.apache.calcite.adapter.druid.DruidSchemaFactory;schema.url=http://localhost:8082;schema.coordinatorUrl=http://localhost:8081

sqlline> !tables

This query runs for very long time if data source contains a lot of data.