[IOTDB-722] [Distributed] Support mode consistencies

• Type: Improvement
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Labels: cluster consistencyCheck pull-request-available
• Assignee: Houliang Qi
• Reporter: Tian Jiang
• Created: 28/May/20 04:02
• Updated: 22/Jun/20 02:40
• Resolved: 22/Jun/20 02:39

Description

We only support mid-consistency now, which is that we will first try to synchronize with the leader to reach strong consistency, but if there is a time-out, we will give up and just use current data which results in a weak consistency.

So there are two other consistencies to support: Strong consistency, if there is a time-out, instead of using local data, directly report an error to the user. Weak consistency, do not synchronize with the leader and simply use the local data.

Issue Links

• is a child of: IOTDB-68 IoTDB supports distributed version
• links to: GitHub Pull Request #1371
• links to: GitHub Pull Request #1380