[SOLR-14304] CDCR is failing for dynamic field as single valued are sent to target collection with multiple values

• Type: Bug
• Status: Resolved
• Priority: Critical
• Resolution: Won't Fix
• Affects Version/s: 8.1.1
• Component/s: CDCR, SolrCloud

Environment

Server OS : AWS Linux 

Java :

openjdk version "1.8.0_232"
OpenJDK Runtime Environment (build 1.8.0_232-b09)
OpenJDK 64-Bit Server VM (build 25.232-b09, mixed mode)

 

Solr Cloud with external zookeeper having 1 collection "search1"  with 2 shards with no extra replicas.

• Assignee: Unassigned
• Reporter: Jayesh Shende
• Created: 04/Mar/20 17:26
• Updated: 28/Oct/20 20:37
• Resolved: 28/Oct/20 20:37

Description

During Uni-Directional CDCR, after syncing data directories from source to target collection's replicas and then starting Target and Source cluster, when I start the CDCR replication using /cdcr?action=START on Source collection,

On Source collection, I am getting following error on Solr admin logging section:

BaseCloudSolrClient

Request to collection [search1] failed due to (400) org.apache.solr.client.solrj.impl.HttpSolrClient$RemoteSolrException: Error from server at http://IP:PORT/solr/search1_shard1_replica_n1: ERROR: [doc=A_someID_s] multiple values encountered for non multiValued field StartDate_dt: [2012-04-12T00:00:01.000Z,​ 2012-04-12T00:00:01.000Z|#8203; 2012-04-12T00:00:01.000Z],​ retry=0 commError=false errorCode=400

 

and following warning:

CdcrReplicator

Failed to forward update request to target: search1

 

Also on Target Collection getting following ERROR :

ERROR false

x:search1_shard1_replica_n1

RequestHandlerBase

org.apache.solr.common.SolrException: ERROR: [doc=A_someID_s] multiple values encountered for non multiValued field StartDate_dt: [2012-04-12T00:00:01.000Z,​ 2012-04-12T00:00:01.000Z|#8203; 2012-04-12T00:00:01.000Z]

 

The field I am using is :

 

<dynamicField name="*_dt" type="date" indexed="true" stored="true" multiValued="false" omitNorms="true"/>

<fieldType name="date" class="solr.TrieDateField" precisionStep="0" positionIncrementGap="0"/>

 

 Other CDCR monitoring actions and STAR, STOP and BOOTSTRAP are working fine.