[DRILL-2855] Fix invalid result issues with StreamingAggBatch

• Type: Bug
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 0.8.0
• Fix Version/s: 0.9.0
• Component/s: Execution - Relational Operators
• Assignee: Venki Korukanti
• Reporter: Venki Korukanti
• Created: 23/Apr/15 18:25
• Updated: 28/Apr/15 03:01
• Resolved: 28/Apr/15 03:01

Description

There are two issues that are causing invalid results:
1. In some conditions we are failing to add the record to current aggregation workspace around batch boundary or output batch is full.
2. Incorrectly cleaning up the previous batch. Currently we keep a reference to the current batch in "previous" and try to get the next incoming batch which has more than zero records or there are no incoming batches. If the next incoming batch has zero records, we are cleaning up the "previous" batch.