[IOTDB-1193] Remove redundant sync meta leader in CManager for cluster module

• Type: Improvement
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 0.12.0
• Component/s: Core/Cluster
• Labels: pull-request-available
• Assignee: Unassigned
• Reporter: Xinyu Tan
• Created: 09/Mar/21 10:46
• Updated: 12/Mar/21 06:29
• Resolved: 12/Mar/21 06:29

Description

Currently, the coordinator will sync meta leader many times when parsing sql if this sql involved many timeseries, which cost a lot of network overhead.

Actually, we can just sync meta leader once for one query when parsing meta leader.

Issue Links

• links to: GitHub Pull Request #2787