Let’s see the query. My bet is that you are _searching_ against the field and have indexed=false.
Searching against a docValues=true indexed=false field results in the equivalent of a “table scan” in the RDBMS world. You may use the docValues efficiently for _function queries_ to mimic some search behavior. Best, Erick > On Sep 29, 2020, at 6:59 AM, raj.yadav <rajkum...@cse.ism.ac.in> wrote: > > In our index, we have few fields defined as `ExternalFileField` field type. > We decided to use docValues for such fields. Here is the field type > definition > > OLD => (ExternalFileField) > <fieldType name="ext_file_field" indexed="false" stored="true" keyField="id" > defVal="0.0" class="solr.ExternalFileField"/> > > NEW => (docValues) > <fieldType name="doc_value_field" class="solr.FloatPointField" > indexed="false" stored="false" docValues="true" > useDocValuesAsStored="false"/> > > After this modification we started getting the following `timeout warning` > messages: > > ```The request took too long to iterate over doc values. Timeout: timeoutAt: > 1626463774823735 (System.nanoTime(): 1626463774836490),​ > DocValues=org.apache.lucene.codecs.lucene80.Lucene80DocValuesProducer$8@4efddff > ``` > > Our system configuration: > Each Solr Instance: 8 vcpus, 64 GiB memory > JAVA Memory: 30GB > Collection: 4 shards (each shard has approximately 12 million docs and index > size of 12 GB) and each Solr instance has one replica of the shard. > > GC_TUNE="-XX:NewRatio=3 \ > -XX:SurvivorRatio=4 \ > -XX:PermSize=64m \ > -XX:MaxPermSize=64m \ > -XX:TargetSurvivorRatio=80 \ > -XX:MaxTenuringThreshold=9 \ > -XX:+UseConcMarkSweepGC \ > -XX:+UseParNewGC \ > -XX:+CMSClassUnloadingEnabled \ > -XX:ConcGCThreads=4 -XX:ParallelGCThreads=4 \ > -XX:+CMSScavengeBeforeRemark \ > -XX:PretenureSizeThreshold=64m \ > -XX:+UseCMSInitiatingOccupancyOnly \ > -XX:CMSInitiatingOccupancyFraction=50 \ > -XX:CMSMaxAbortablePrecleanTime=6000 \ > -XX:+CMSParallelRemarkEnabled \ > -XX:+ParallelRefProcEnabled" > > 1. What this warning message means? > 2. How to resolve it? > > > > > -- > Sent from: https://lucene.472066.n3.nabble.com/Solr-User-f472068.html
