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Posted to notifications@iotdb.apache.org by "Wei Shao (Jira)" <ji...@apache.org> on 2020/04/30 10:03:00 UTC

[jira] [Created] (IOTDB-632) Performance improve for Linear Fill

Wei Shao created IOTDB-632:
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             Summary: Performance improve for Linear Fill
                 Key: IOTDB-632
                 URL: https://issues.apache.org/jira/browse/IOTDB-632
             Project: Apache IoTDB
          Issue Type: Improvement
          Components: Core/Engine
            Reporter: Wei Shao
            Assignee: Wei Shao
             Fix For: 0.10.0-SNAPSHOT


Consider the Linear Fill function within range [T-before_range, T+after_range]. 
In current implementation, the query executor will search from the beginning of the timeseries if before_range is infinite value, which is time consuming.

The new implementation should be able to accelerate Linear Fill by searching the result within [T-before_range, T] in an inverse order.

 



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