Hi, I am using solr 8.1 in production. We have about 30%-50% of deleted documents in some old segments that were merged a year ago.
These segments size is about 5GB. I was wondering why these segments have a high % of deleted docs and found out that they are NOT being candidates for merging because the default TieredMergePolicy maxMergedSegmentMB is 5G. So I have modified the TieredMergePolicyFactory config as below to lower the delete docs % <mergePolicyFactory class="org.apache.solr.index.TieredMergePolicyFactory"> <int name="maxMergeAtOnce">10</int> <int name="segmentsPerTier">10</int> <double name="maxMergedSegmentMB">12000</double> <double name="deletesPctAllowed">20</double> </mergePolicyFactory> Do you see any issues with increasing the max merged segment to 12GB and lowered the deletedPctAllowed to 20%? Thanks, Moulay
