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Posted to dev@iotdb.apache.org by "Jialin Qiao (Jira)" <ji...@apache.org> on 2020/02/15 07:57:00 UTC

[jira] [Closed] (IOTDB-454) Vectorize the TimeGenerator

     [ https://issues.apache.org/jira/browse/IOTDB-454?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Jialin Qiao closed IOTDB-454.
-----------------------------
    Resolution: Duplicate

> Vectorize the TimeGenerator
> ---------------------------
>
>                 Key: IOTDB-454
>                 URL: https://issues.apache.org/jira/browse/IOTDB-454
>             Project: Apache IoTDB
>          Issue Type: Improvement
>            Reporter: Jialin Qiao
>            Priority: Minor
>
> For all query types with value filter, such as where s1=1 or s2=1, we will construct a TimeGenerator to get the timestamp in the result.
> In the above case, the generator tree is OrNode(LeafNode(s1=1), LeafNode(s2=1)).
> In the engine, each leafnode corresponds to a SeriesRawDataPointReader. It's possible to use SeriesRawDataBatchReader in each leafnode and internal nodes to speed up the time generator.
>  
> It could also be optimized in the TsFile module.



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