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https://issues.apache.org/jira/browse/SOLR-3950?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13476854#comment-13476854
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Mark Harwood commented on SOLR-3950:
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BloomFilterPostingsFormat is designed to wrap another choice of PostingsFormat
and adds ".blm" files to the other files created by the choice of delegate.
However your code has instantiated a BloomFilterPostingsFormat without passing
a choice of delegate - presumably using the zero-arg constructor.
The comments in the code for this zero-arg constructor state:
// Used only by core Lucene at read-time via Service Provider instantiation -
// do not use at Write-time in application code.
> Attempting postings="BloomFilter" results in UnsupportedOperationException
> --------------------------------------------------------------------------
>
> Key: SOLR-3950
> URL: https://issues.apache.org/jira/browse/SOLR-3950
> Project: Solr
> Issue Type: Bug
> Affects Versions: 4.1
> Environment: Linux bigindy5 2.6.32-279.9.1.el6.centos.plus.x86_64 #1
> SMP Wed Sep 26 03:52:55 UTC 2012 x86_64 x86_64 x86_64 GNU/Linux
> [root@bigindy5 ~]# java -version
> java version "1.7.0_07"
> Java(TM) SE Runtime Environment (build 1.7.0_07-b10)
> Java HotSpot(TM) 64-Bit Server VM (build 23.3-b01, mixed mode)
> Reporter: Shawn Heisey
> Fix For: 4.1
>
>
> Tested on branch_4x, checked out after BlockPostingsFormat was made the
> default by LUCENE-4446.
> I used 'ant generate-maven-artifacts' to create the lucene-codecs jar, and
> copied it into my sharedLib directory. When I subsequently tried
> postings="BloomFilter" I got a the following exception in the log:
> {code}
> Oct 15, 2012 11:14:02 AM org.apache.solr.common.SolrException log
> SEVERE: java.lang.UnsupportedOperationException: Error -
> org.apache.lucene.codecs.bloom.BloomFilteringPostingsFormat has been
> constructed without a choice of PostingsFormat
> {code}
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