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From Kay Kay <kaykay.uni...@gmail.com>
Subject Re: [jira] Resolved: (HBASE-2107) Upgrading Lucene 2.2 to Lucene 3.0.0
Date Mon, 11 Jan 2010 22:54:51 GMT
Thanks stack for helping committing this.

Out of curiosity - this lucene tool ( buildtableIndex) seems totally 
tangential to hbase , albeit an useful tool for sure. Can this be in a 
separate contrib to lessen the dependencies on the core hbase tree ?  
Thoughts ?


On 1/11/10 2:30 PM, stack (JIRA) wrote:
>       [ https://issues.apache.org/jira/browse/HBASE-2107?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
>
> stack resolved HBASE-2107.
> --------------------------
>
>         Resolution: Fixed
>      Fix Version/s: 0.21.0
>
> Committed.
>
>    
>> Upgrading Lucene 2.2 to Lucene 3.0.0
>> -------------------------------------
>>
>>                  Key: HBASE-2107
>>                  URL: https://issues.apache.org/jira/browse/HBASE-2107
>>              Project: Hadoop HBase
>>           Issue Type: Improvement
>>             Reporter: Kay Kay
>>              Fix For: 0.21.0
>>
>>          Attachments: HBASE-2107.patch, HBASE-2107.patch, HBASE-2107.patch
>>
>>
>> HBase has an utility to export columns as Lucene indices. (o.a.h.hbase.mapreduce.BuildTableIndex
) .
>> This patch increases the version in libraries.properties and addresses some deprecations
towards moving it.
>> Rationale for upgradation:
>> ====================
>> A lot has been happening in the Lucene since 2.2, with improved performance and focus
on NRT (Near Real Time search) happening recently.  Hence - we need to keep up with the same
and make the utility publish indices for the new version.
>> Caveats:
>> =======
>> Index created by Lucene 3.0 is *not backward-compatible* with Lucene 2.2 code.  In
other words - as part of this upgradation - indices need to be created all over again and
the library interacting with the index ( readers / searchers ) need to be upgraded to the
new version as well.
>>      
>    


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