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From "Siying Dong (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HIVE-2309) Incorrect regular expression for extracting task id from filename
Date Tue, 26 Jul 2011 23:17:09 GMT

    [ https://issues.apache.org/jira/browse/HIVE-2309?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13071420#comment-13071420
] 

Siying Dong commented on HIVE-2309:
-----------------------------------

+1, will commit after tests pass

> Incorrect regular expression for extracting task id from filename
> -----------------------------------------------------------------
>
>                 Key: HIVE-2309
>                 URL: https://issues.apache.org/jira/browse/HIVE-2309
>             Project: Hive
>          Issue Type: Bug
>          Components: Query Processor
>    Affects Versions: 0.7.1
>            Reporter: Paul Yang
>            Assignee: Paul Yang
>            Priority: Minor
>         Attachments: HIVE-2309.1.patch, HIVE-2309.2.patch
>
>
> For producing the correct filenames for bucketed tables, there is a method in Utilities.java
that extracts out the task id from the filename and replaces it with the bucket number. There
is a bug in the regex that is used to extract this value for attempt numbers >= 10:
> {code}
> >>> re.match("^.*?([0-9]+)(_[0​-9])?(\\..*)?$", 'attempt_201107090429_6496​5_m_001210_10').group(1)
> '10'
> >>> re.match("^.*?([0-9]+)(_[0​-9])?(\\..*)?$", 'attempt_201107090429_6496​5_m_001210_9').group(1)
> '001210'
> {code}

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