Rajeswari Natarajan created SOLR-17747:
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Summary: Not able to optimize solr 9.8.1 HNSW index
Key: SOLR-17747
URL: https://issues.apache.org/jira/browse/SOLR-17747
Project: Solr
Issue Type: Bug
Reporter: Rajeswari Natarajan
After building the Solr HNSW index on 9.8.0, I tried to optimize it to a
single segment. However the optimization doesn't happen and no errors
found in solr log.
Schema:
<fieldType name="knn_vector_float_256" class="solr.DenseVectorField"
vectorDimension="256" similarityFunction="dot_product" vectorEncoding=
"FLOAT32" hnswMaxConnections="16" hnswBeamWidth="200"/> <fieldType name=
"knn_vector_byte_256" class="solr.DenseVectorField" vectorDimension="256"
similarityFunction="dot_product" vectorEncoding="BYTE" hnswMaxConnections=
"16" hnswBeamWidth="200"/> <field name="item_vector_float" type=
"knn_vector_float_256" indexed="true" stored="false"/>
<field name="item_vector_byte" type="knn_vector_byte_256" indexed="true"
stored="false"/>
Solrconfig for merge:
<mergePolicyFactory class=
"${mergePolicyFactory:org.apache.solr.index.TieredMergePolicyFactory}">
<int name="maxMergeAtOnce">25</int> <int name="segmentsPerTier">25</int> <
int name="maxMergedSegmentMB">100000</int> </mergePolicyFactory>
This is also tested in 9.8.1 , found the same issue . Please check mailing
list also , this is raised there
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