[IOTDB-1541] Change sequence of wal and memtable in insert

• Type: Improvement
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Fix Version/s: master branch, 0.12.2
• Component/s: Core/Engine
• Labels: pull-request-available
• Assignee: Unassigned
• Reporter: Haiming Zhu
• Created: 02/Aug/21 02:25
• Updated: 25/Aug/21 08:20
• Resolved: 10/Aug/21 08:09

Description

When inserting data, IoTDB first inserts data into memtable and then writes wal. If writing wal occurs error, the data in memtable should rollback, but IoTDB doesn't implement this. This problem can be fixed by changing the sequence of wal and memtable in insert.

Issue Links

• links to: GitHub Pull Request #3660
• links to: GitHub Pull Request #3705