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https://issues.apache.org/jira/browse/HIVE-519?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12713947#action_12713947
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Johan Oskarsson commented on HIVE-519:
--------------------------------------

127.0.0.1 - - [26/May/2009:00:00:00 +0000] "GET /someurl/?track=Blabla(Main) 
HTTP/1.1" 200 5864 - "Mozilla/5.0 (Windows; U; Windows NT 6.0; en-US) 
AppleWebKit/525.19 (KHTML, like Gecko) Chrome/1.0.154.65 Safari/525.19"

Example of a line that takes 15 seconds to process on my machine, it does 
eventually complete though. If I remove the (Main) part of the url it takes 29 
milliseconds to finish.

> Regex processing gets stuck when querying weblogs
> -------------------------------------------------
>
>                 Key: HIVE-519
>                 URL: https://issues.apache.org/jira/browse/HIVE-519
>             Project: Hadoop Hive
>          Issue Type: Bug
>          Components: Serializers/Deserializers
>    Affects Versions: 0.4.0
>            Reporter: Johan Oskarsson
>            Priority: Critical
>             Fix For: 0.4.0
>
>         Attachments: hive-stdout
>
>
> When running a simple query on a table similar to the apachelog table here: 
> http://wiki.apache.org/hadoop/Hive/UserGuide the regular expression matcher 
> gets stuck in an infinite loop.

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