[DRILL-8201] SchemaChange in HashAgg operator

• Type: Improvement
• Status: In Progress
• Priority: Major
• Resolution: Unresolved
• Affects Version/s: 1.20.0
• Component/s: Execution - Codegen, Storage - JSON
• Assignee: Vitalii Diravka
• Reporter: Vitalii Diravka
• Created: 26/Apr/22 14:20
• Updated: 15/Feb/23 06:38

Description

Hash aggregate does not support schema change due to HashAggBatch implementation:

case UPDATE_AGGREGATOR:
  throw UserException.unsupportedError()
      .message(SchemaChangeException.schemaChanged(
          "Hash aggregate does not support schema change",
          incomingSchema,
          incoming.getSchema()).getMessage())
      .build(logger);
default: 

 After JSON update to leverage EVF there is schema change for this oprator in the 

TestE2EUnnestAndLateral#testMultipleBatchesLateral_WithGroupByInParent test case

Issue Links

• is part of: DRILL-8037 Add V2 JSON Format Plugin based on EVF