[IOTDB-526] [Distributed] Support metadata queries

• Type: Improvement
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Fix Version/s: master branch
• Labels: distributed meta-query pull-request-available
• Assignee: Yuyuan KANG
• Reporter: Tian Jiang
• Created: 28/Feb/20 01:42
• Updated: 20/Jun/22 15:37
• Resolved: 22/Jul/20 12:48

Description

Metadata queries, like "getNodeList", "getPathNextChildern", "getTimeseriesSchema" are currently unsupported. The point is that the paths being queried may contain wildcards or they may be prefix paths, which makes it a little hard to figure out which data groups to send the query.

The simplest way may be performing a broadcast and merge the results, which is clearly less efficient. I am hoping you can give a more brilliant idea to resolve this.

Issue Links

• is a child of: IOTDB-68 IoTDB supports distributed version
• links to: GitHub Pull Request #1051
• links to: GitHub Pull Request #1277