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Posted to common-dev@hadoop.apache.org by "Milind Bhandarkar (JIRA)" <ji...@apache.org> on 2007/01/25 21:24:49 UTC

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

    [ https://issues.apache.org/jira/browse/HADOOP-602?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#action_12467524 ] 

Milind Bhandarkar commented on HADOOP-602:
------------------------------------------

+1 on the original proposal.
We should copy lucene's priority queue implementation to Hadoop, and remove lucene-core.jar from lib.


> 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: Andrzej Bialecki 
>
> 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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