Thanks Hoss, Just opened SOLR-6560 and attached a patch which removes the offending section from the example solrconfig.xml file.
We suspect that with the much more efficient block and FST based Solr 4 default postings format that the need to mess with the parameters in order to reduce memory usage has gone away. Haven't really tested yet. If there is still a use case for configuring the Solr default PostingsFormat and the ability to set the parameters currently exists, than maybe someone who understands this could put an example in the solrconfig.xml file and documentation. On the other hand if the use case still exists and Solr doesn't have the ability to configure the parameters, maybe another issue should be opened. Looks like all that would be needed is a mechanism to pass a couple of ints to the Lucene postings format: " For example, Lucene41PostingsFormat <http://lucene.apache.org/core/4_10_0/core/org/apache/lucene/codecs/lucene41/Lucene41PostingsFormat.html>implements the term index instead based upon how terms share prefixes. To configure its parameters (the minimum and maximum size for a block), you would instead use Lucene41PostingsFormat.Lucene41PostingsFormat(int, int) <http://lucene.apache.org/core/4_10_0/core/org/apache/lucene/codecs/lucene41/Lucene41PostingsFormat.html#Lucene41PostingsFormat(int,%20int)>. which can also be configured on a per-field basis:" Tom On Thu, Sep 18, 2014 at 1:42 PM, Chris Hostetter <hossman_luc...@fucit.org> wrote: > > : I think the documentation and example files for Solr 4.x need to be > : updated. If someone will let me know I'll be happy to fix the example > : and perhaps someone with edit rights could fix the reference guide. > > I think you're correct - can you open a Jira with suggested improvements > for the configs? (i see you commented on the ref guide page which is > helpful - but the jira issue wil also help serve sa a reminder to audit > *all* the pages for refrences to these options, ie: in config snippets, > etc...) > > : According to the JavaDocs for IndexWriterConfig, the Lucene level > : implementations of these do not apply to the default PostingsFormat > : implementation. > : > http://lucene.apache.org/core/4_10_0/core/org/apache/lucene/index/IndexWriterConfig.html#setReaderTermsIndexDivisor%28int%29 > : > : Despite this statement in the Lucene JavaDocs, in the > : example/solrconfig.xml there is the following: > > Yeah ... I'm not sure what (if anything?) we should say about these in the > example configs -- the *setting* is valid and supported by > IndexWriterConfig no matter what posting format you use, so it's not an > error to configure this, but it can be ignored in many cases. > > : Can someone please confirm that these two parameter settings > : termIndexInterval and termsIndexDivisor, do not apply to the default > : PostingsFormat for Solr 4.10? > > I was taking your word for it :) > > > -Hoss > http://www.lucidworks.com/ >
