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From Tom Burton-West <>
Subject Details on setting block parameters for Lucene41PostingsFormat
Date Fri, 09 Jan 2015 21:15:07 GMT
Hello all,

We have over 3 billion unique terms in our indexes and with Solr 3.x we set
the TermIndexInterval to about 8 times its default value in order to index
without OOMs.  (

We are now working with Solr 4 and running into memory issues and are
wondering if we need to do something analogous for Solr 4.

The javadoc for IndexWriterConfig (
indicates that the lucene 4.1 postings format has some parameters which may
be set:
"..To configure its parameters (the minimum and maximum size for a block),
you would instead use Lucene41PostingsFormat.Lucene41PostingsFormat(int,

Is there documentation or discussion somewhere about how to determine
appropriate parameters or some detail about what setting the maxBlockSize
and minBlockSize does?

Tom Burton-West

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