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Posted to dev@hive.apache.org by "Johan Oskarsson (JIRA)" <ji...@apache.org> on 2009/05/27 12:38:45 UTC

[jira] Updated: (HIVE-519) Regex processing gets stuck when querying weblogs

     [ https://issues.apache.org/jira/browse/HIVE-519?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Johan Oskarsson updated HIVE-519:
---------------------------------

    Attachment: hive-stdout

Attaching a thread dump from one of the map tasks.

Example query that triggers this behaviour:
select remote_ip, count(1) from weblogs  where insertdate='2009-05-26' group by remote_ip limit 10;

> 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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