[jira] [Created] (IOTDB-695) Accelerate the count timeseries query

[Jialin Qiao (Jira)]

Jialin Qiao created IOTDB-695:
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             Summary: Accelerate the count timeseries query
                 Key: IOTDB-695
                 URL: https://issues.apache.org/jira/browse/IOTDB-695
             Project: Apache IoTDB
          Issue Type: Improvement
          Components: Core/Engine
            Reporter: Jialin Qiao


For count timeseries, we get all timeseries and then calculate the count. Which 
occupy much memory and not efficient. It's better to count while traversing the 
MTree.



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