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From "Deepak Jaiswal (JIRA)" <>
Subject [jira] [Issue Comment Deleted] (HIVE-16132) DataSize stats don't seem correct in semijoin opt branch
Date Fri, 10 Mar 2017 02:28:37 GMT


Deepak Jaiswal updated HIVE-16132:
    Comment: was deleted

(was: Remove analyze for srcpart table in the test.)

> DataSize stats don't seem correct in semijoin opt branch
> --------------------------------------------------------
>                 Key: HIVE-16132
>                 URL:
>             Project: Hive
>          Issue Type: Bug
>          Components: HiveServer2
>            Reporter: Deepak Jaiswal
>            Assignee: Deepak Jaiswal
>         Attachments: HIVE-16132.1.patch, HIVE-16132.2.patch
> For the following operator tree snippet, the second Select is the start of a semijoin
optimization branch. Take a look at the Data size - it is the same as the data size for its
parent Select, even though the second select has only a single bigint column in its projection
(the parent has 2 columns). I would expect the size to be 533328 (16 bytes * 33333).
> Fixing this estimate may become important if we need to estimate the cost of generating
the min/max/bloomfilter.

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