Solr 4.7.2 mergeFactor

[Summer Shire]

Hi All,

I am using solr 4.7.2 is there a bug wrt merging the segments down ? 

I recently added the following to my solrConfig.xml

  <indexConfig>
    <useCompoundFile>false</useCompoundFile>
    <ramBufferSizeMB>100</ramBufferSizeMB>
    <maxBufferedDocs>1000</maxBufferedDocs>
    <mergeFactor>5</mergeFactor>
  </indexConfig>


But I do not see any merging of the segments happening. I saw some other people 
have 
the same issue but there wasn’t much info. except one suggesting to use 
<mergePolicy class="org.apache.lucene.index.TieredMergePolicy">
      <int name="maxMergeAtOnce">5</int>
      <int name="segmentsPerTier">5</int>
    </mergePolicy>
<mergeScheduler class="org.apache.lucene.index.ConcurrentMergeScheduler”/>

instead of mergeFactor.

Thanks,
Summer