[IOTDB-899] Remove the lock in leaf node to save memory footprint

• Type: Improvement
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 0.11.0
• Component/s: Core/Engine
• Labels: pull-request-available
• Assignee: Yuan Tian
• Reporter: Yuan Tian
• Created: 21/Sep/20 03:18
• Updated: 22/Sep/20 03:40
• Resolved: 21/Sep/20 06:55

Description

The ReadWriteLock in java costs 120B, in  the current version, each MNode has one lock, so when the number of measurements surges(e.g. reaches 400,000,000), just the lock will take about 5GB memory.

Issue Links

• links to: GitHub Pull Request #1745