SteveYurongSu commented on issue #1329:
URL: https://github.com/apache/streampipes/issues/1329#issuecomment-1445164795

   I have done some experiments these days and found that the reason why the 
API returns a response indicating the whole measurement does not exist when no 
data between startDate and endDate:
   
   **The InfluxDB client always returns a response with no metadata when 
querying a timeline with no data between startDate and endDate (even if the 
timeline exists).** 
   
   So, there seems to be some difficulty in achieving the expected behavior. In 
fact, I have some immature solutions in my mind. But in my solutions, at least 
one query call of Influxdb needs to be added in 
`DataExplorerQueryV4#executeQuery`, which may also cause additional problems... 
   
   I'm not sure what to do next now.  @bossenti What do you think? 😂😂


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