[infinispan-issues] [JBoss JIRA] (ISPN-4573) Unable to serialize List<LuceneWork>

Unable to serialize List<LuceneWork> ------------------------------------ Key: ISPN-4573 URL: https://issues.jboss.org/browse/ISPN-4573 Project: Infinispan Issue Type: Bug Security Level: Public(Everyone can see) Components: Embedded Querying Affects Versions: 7.0.0.Alpha5 Reporter: Radim Vansa Assignee: Sanne Grinovero Priority: Critical Fix For: 7.0.0.Beta2 When I try to fill distributed cache with indexing enabled concurrently from multiple threads, I get {code} org.hibernate.search.exception.SearchException: HSEARCH000083: Unable to serialize List<LuceneWork> at org.hibernate.search.indexes.serialization.impl.LuceneWorkSerializerImpl.toSerializedModel(LuceneWorkSerializerImpl.java:92) ... Caused by: java.lang.ArrayIndexOutOfBoundsException: 6 at java.util.ArrayList.add(ArrayList.java:412) at org.hibernate.search.indexes.serialization.avro.impl.AvroSerializer.addFieldWithStringData(AvroSerializer.java:258) at org.hibernate.search.indexes.serialization.impl.LuceneWorkSerializerImpl.buildDocument(LuceneWorkSerializerImpl.java:174) at org.hibernate.search.indexes.serialization.impl.LuceneWorkSerializerImpl.toSerializedModel(LuceneWorkSerializerImpl.java:80) {code} There are multiple different exceptions as cause, but the reason is one: {{AvroSerializer}} is not thead-safe. {{AvroSerializerProvider}} returns always the same instance, and so does {{InfinispanIndexManager}} (or rather {{DirectoryBasedIndexManager}}) return the same instance of {{LuceneWorkSerializerImpl}} wrapping the {{AvroSerializerProvider}}. This results in failed writes, corrupted data and another fun.