3477016 - Solr collection cannot be loaded with tokenizer related UnsupportedOperationException

Solr pod is up and running but solr collection cannot be served, below error can be observed in solr log, meanwhile the error cannot be resolved with pod restart.

Error waiting for SolrCore to be loaded on startup => java.util.concurrent.ExecutionException: org.apache.solr.common.SolrException: Could not load conf for core master_electronics_Product_default_shard1_replica_n1: null

java.util.concurrent.ExecutionException: org.apache.solr.common.SolrException: Could not load conf for core master_electronics_Product_default_shard1_replica_n1: null
    at java.util.concurrent.FutureTask.report(FutureTask.java:122) ~[?:?]
    at java.util.concurrent.FutureTask.get(FutureTask.java:191) ~[?:?]
    at org.apache.solr.core.CoreContainer.lambda$load$13(CoreContainer.java:1044) ~[?:?]
    at com.codahale.metrics.InstrumentedExecutorService$InstrumentedRunnable.run(InstrumentedExecutorService.java:212) ~[metrics-core-4.2.17.jar:4.2.17]
    at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:539) ~[?:?]
    at java.util.concurrent.FutureTask.run(FutureTask.java:264) ~[?:?]
    at org.apache.solr.common.util.ExecutorUtil$MDCAwareThreadPoolExecutor.lambda$execute$0(ExecutorUtil.java:289) ~[?:?]
    at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1136) ~[?:?]
    at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:635) ~[?:?]
    at java.lang.Thread.run(Thread.java:840) [?:?]
Caused by: org.apache.solr.common.SolrException: Could not load conf for core master_electronics_Product_default_shard1_replica_n1: null
    at org.apache.solr.core.ConfigSetService.loadConfigSet(ConfigSetService.java:263) ~[?:?]
    at org.apache.solr.core.CoreContainer.isSharedFs(CoreContainer.java:1712) ~[?:?]
    at org.apache.solr.cloud.CloudUtil.checkSharedFSFailoverReplaced(CloudUtil.java:60) ~[?:?]
    at org.apache.solr.cloud.ZkController.throwErrorIfReplicaReplaced(ZkController.java:2545) ~[?:?]
    at org.apache.solr.core.CoreContainer.lambda$load$12(CoreContainer.java:1012) ~[?:?]
    at com.codahale.metrics.InstrumentedExecutorService$InstrumentedCallable.call(InstrumentedExecutorService.java:234) ~[metrics-core-4.2.17.jar:4.2.17]
    ... 5 more
Caused by: java.lang.UnsupportedOperationException
    at org.apache.lucene.util.fst.Outputs.merge(Outputs.java:95) ~[?:?]
    at org.apache.lucene.util.fst.FSTCompiler.add(FSTCompiler.java:564) ~[?:?]
    at org.apache.lucene.analysis.ja.dict.UserDictionary.<init>(UserDictionary.java:148) ~[?:?]
    at org.apache.lucene.analysis.ja.dict.UserDictionary.open(UserDictionary.java:76) ~[?:?]
    at org.apache.lucene.analysis.ja.JapaneseTokenizerFactory.inform(JapaneseTokenizerFactory.java:155) ~[?:?]
    at org.apache.solr.core.SolrResourceLoader.informAware(SolrResourceLoader.java:765) ~[?:?]
    at org.apache.solr.core.SolrResourceLoader.inform(SolrResourceLoader.java:752) ~[?:?]
    at org.apache.solr.schema.IndexSchema.<init>(IndexSchema.java:189) ~[?:?]
    at org.apache.solr.schema.IndexSchemaFactory.create(IndexSchemaFactory.java:108) ~[?:?]
    at org.apache.solr.core.ConfigSetService.createIndexSchema(ConfigSetService.java:342) ~[?:?]
    at org.apache.solr.core.ConfigSetService.lambda$loadConfigSet$0(ConfigSetService.java:253) ~[?:?]
    at org.apache.solr.core.ConfigSet.<init>(ConfigSet.java:49) ~[?:?]
    at org.apache.solr.core.ConfigSetService.loadConfigSet(ConfigSetService.java:249) ~[?:?]
    at org.apache.solr.core.CoreContainer.isSharedFs(CoreContainer.java:1712) ~[?:?]
    at org.apache.solr.cloud.CloudUtil.checkSharedFSFailoverReplaced(CloudUtil.java:60) ~[?:?]
    at org.apache.solr.cloud.ZkController.throwErrorIfReplicaReplaced(ZkController.java:2545) ~[?:?]
    at org.apache.solr.core.CoreContainer.lambda$load$12(CoreContainer.java:1012) ~[?:?]
    at com.codahale.metrics.InstrumentedExecutorService$InstrumentedCallable.call(InstrumentedExecutorService.java:234) ~[metrics-core-4.2.17.jar:4.2.17]
    ... 5 more

Image/data in this KBA is from SAP internal systems, sample data, or demo systems. Any resemblance to real data is purely coincidental.

UnsupportedOperationException, UserDictionary, solr collection load, startup. , KBA , CEC-SCC-COM-SRC-SER , Search and Navigation , Problem