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Posted to issues@spark.apache.org by "Reynold Xin (JIRA)" <ji...@apache.org> on 2016/11/03 09:02:00 UTC

[jira] [Updated] (SPARK-17254) Filter operator should have “stop if false” semantics for sorted data

     [ https://issues.apache.org/jira/browse/SPARK-17254?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Reynold Xin updated SPARK-17254:
--------------------------------
    Issue Type: Sub-task  (was: Improvement)
        Parent: SPARK-18245

> Filter operator should have “stop if false” semantics for sorted data
> ---------------------------------------------------------------------
>
>                 Key: SPARK-17254
>                 URL: https://issues.apache.org/jira/browse/SPARK-17254
>             Project: Spark
>          Issue Type: Sub-task
>          Components: SQL
>            Reporter: Tejas Patil
>         Attachments: stop-after-physical-plan.pdf
>
>
> From https://issues.apache.org/jira/secure/attachment/12778890/BucketedTables.pdf:
> Filter on sorted data
> If the data is sorted by a key, filters on the key could stop as soon as the data is out of range. For example, WHERE ticker_id < “F” should stop as soon as the first row starting with “F” is seen. This can be done adding a Filter operator that has “stop if false” semantics. This is generally useful.



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