[DRILL-3156] Calcite tracing is broken in Drill

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 1.2.0
• Component/s: Query Planning & Optimization
• Assignee: Jinfeng Ni
• Reporter: Jinfeng Ni
• Created: 20/May/15 19:11
• Updated: 18/Sep/15 16:21
• Resolved: 14/Jul/15 05:34

Description

Apache Calcite's tracing functionality plays an important role when we debug issues related to either logical planning or physical planning in Drill.

However, since Drill-705 introduced a HepPlanner to do query planning for Window Function, the tracing functionality is broken.

For instance, if I turn on Calcite tracing and set the tracing level to "FINER", as following:

org.apache.calcite.plan.RelOptPlanner.level = FINER

When submit a query to Drill, Drill hit AssertionError.

SYSTEM ERROR: java.lang.AssertionError: Internal error: should never get here

[Error Id: 3410c3b4-726f-487b-a1c4-287b6ae724aa on 172.16.0.120:31010]

The root cause of this Assertion is here :

Caused by: java.lang.AssertionError: Internal error: should never get here
  at org.apache.calcite.util.Util.newInternal(Util.java:775) ~[calcite-core-1.1.0-drill-r7.jar:1.1.0-drill-r7]
  at org.apache.calcite.plan.hep.HepRelVertex.computeSelfCost(HepRelVertex.java:68) ~[calcite-core-1.1.0-drill-r7.jar:1.1.0-drill-r7]
  at org.apache.calcite.rel.metadata.RelMdPercentageOriginalRows.getNonCumulativeCost(RelMdPercentageOriginalRows.java:165) ~[calcite-core-1.1.0-drill-r7.jar:1.1.0-drill-r7]