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Posted to notifications@iotdb.apache.org by "Jialin Qiao (Jira)" <ji...@apache.org> on 2022/10/24 03:10:00 UTC

[jira] [Created] (IOTDB-4725) Support loading data in order by each timeseries

Jialin Qiao created IOTDB-4725:
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             Summary: Support loading data in order by each timeseries
                 Key: IOTDB-4725
                 URL: https://issues.apache.org/jira/browse/IOTDB-4725
             Project: Apache IoTDB
          Issue Type: New Feature
            Reporter: Jialin Qiao


In some cases, users would like to load some history data from other database into IoTDB.

The write mode is 

insert timeseries1 from t_min to t_max

insert timeseries2 from t_min to t_max

insert timeseries3 from t_min to t_max

 

If we use the seq/unseq check in device granularity, there may produce many unseq data.

 

In this case, we could use an empty IoTDB for historical data loading.

 

Add a parameter chronological_in_series, for each time point, we put it in sequence space without unseq check, but check in TVList if it is in order. When a TVList is newly created, we compare its last time in last_cache.

 

 

 



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