[IOTDB-1224] The query is pushed down to the DataGroup node.

• Type: Improvement
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 0.12.0
• Component/s: Core/Cluster
• Labels: pull-request-available
• Assignee: Chao Wang
• Reporter: Chao Wang
• Created: 12/Mar/21 06:37
• Updated: 25/Aug/21 08:17
• Resolved: 12/Mar/21 07:16

Description

Currently, in the aggregation query, the coordinator queries data from the data group in which the sequence is located, and then collects statistics. This increases the number of RPC times. We can push the statistics down to the data group for processing.