[jira] Commented: (HADOOP-602) Remove Lucene dependency

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[jira] Commented: (HADOOP-602) Remove Lucene dependency

JIRA jira@apache.org

    [ https://issues.apache.org/jira/browse/HADOOP-602?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#action_12467704 ]

Hadoop QA commented on HADOOP-602:

+1, because http://issues.apache.org/jira/secure/attachment/12349642/lucene-dep.patch applied and successfully tested against trunk revision r500023.

> Remove Lucene dependency
> ------------------------
>                 Key: HADOOP-602
>                 URL: https://issues.apache.org/jira/browse/HADOOP-602
>             Project: Hadoop
>          Issue Type: Improvement
>    Affects Versions: 0.8.0
>            Reporter: Andrzej Bialecki
>         Assigned To: Milind Bhandarkar
>             Fix For: 0.11.0
>         Attachments: lucene-dep.patch
> Hadoop uses just a single class from Lucene, namely the PriorityQueue. I propose to remove this dependency by copying this class into org.apache.hadoop.util.PriorityQueue and removing lucene-core.jar from dependencies.
> Removing this dependency makes it easier to run map-reduce applications that use different versions of Lucene.

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