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From "Sergey Shelukhin (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HIVE-15743) vectorized text parsing: speed up double parse
Date Mon, 06 Feb 2017 19:56:41 GMT

    [ https://issues.apache.org/jira/browse/HIVE-15743?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15854630#comment-15854630
] 

Sergey Shelukhin commented on HIVE-15743:
-----------------------------------------

+1 cc [~gopalv]

> vectorized text parsing: speed up double parse
> ----------------------------------------------
>
>                 Key: HIVE-15743
>                 URL: https://issues.apache.org/jira/browse/HIVE-15743
>             Project: Hive
>          Issue Type: Bug
>            Reporter: Sergey Shelukhin
>            Assignee: Teddy Choi
>         Attachments: HIVE-15743.1.patch, HIVE-15743.2.patch, HIVE-15743.3.patch, HIVE-15743.4.patch,
tpch-without.png
>
>
> {noformat}
> Double.parseDouble(
>                 new String(bytes, fieldStart, fieldLength, StandardCharsets.UTF_8));{noformat}
> This takes ~25% of the query time in some cases.



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