[IOTDB-1482] Count Timeseries and Device with Template

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Fix Version/s: master branch, 0.12.2-SNAPSHOT
• Component/s: Core/Server
• Labels: pull-request-available
• Assignee: Unassigned
• Reporter: Yukun Zhou
• Created: 12/Jul/21 06:06
• Updated: 13/Jul/21 06:56
• Resolved: 13/Jul/21 06:56

Description

Bug Description

Apache IoTDB v0.12 cannot count timeseries and device correctly after introducing template.

Bug Reproduction

When we create a template t1(s1, s2) and then set it to device root.sg1.d1, we expect value 2 produced by count timeseries and value 1 produced by count device. However, the actual result is 0 timeseries and 0 device.

Bug Fix Solution

If a MNode is using template, it should be considered as device and the schema in its template will be considered as timeseries. However, the current code only consider a MeasurementMNode as timeseries and a MNode with MeasurementMNode child as device. Therefore, the method getAllTimeseriesCount and getAllTimeseriesCount in MTree.java should be modified and the judging criteria will be extended with template usage.

Issue Links

• links to: GitHub Pull Request #3540
• links to: GitHub Pull Request #3544