Hazelcast Spring Boot java.lang.ClassNotFoundException









up vote
-3
down vote

favorite












I am starting hazelcast instance in my spring boot application.



Hazelcast configuration



@Configuration
@EnableCaching
public class HazelcastConfig
@Bean
public Config hazelCastConfig()
final Config config = new Config();
config.setClassLoader(getClass().getClassLoader());
config.setInstanceName("cache");
return config;


@Bean
public HazelcastInstance hazelcastInstance()
return Hazelcast.newHazelcastInstance(hazelCastConfig());




And it fails time to time with class not found exception when I call my HTTP endpoint that queries data from hazelcast Map.



java.lang.ClassNotFoundException: com.someOrg.SomeClass
at org.springframework.boot.web.embedded.tomcat.TomcatEmbeddedWebappClassLoader.loadClass(TomcatEmbeddedWebappClassLoader.java:70) ~[spring-boot-2.0.5.RELEASE.jar!/:2.0.5.RELEASE]
at org.apache.catalina.loader.WebappClassLoaderBase.loadClass(WebappClassLoaderBase.java:1137) ~[tomcat-embed-core-8.5.34.jar!/:8.5.34]
at com.hazelcast.nio.ClassLoaderUtil.tryLoadClass(ClassLoaderUtil.java:173) ~[hazelcast-3.9.4.jar!/:3.9.4]
at com.hazelcast.nio.ClassLoaderUtil.loadClass(ClassLoaderUtil.java:147) ~[hazelcast-3.9.4.jar!/:3.9.4]
at com.hazelcast.nio.IOUtil$ClassLoaderAwareObjectInputStream.resolveClass(IOUtil.java:593) ~[hazelcast-3.9.4.jar!/:3.9.4]
at java.io.ObjectInputStream.readNonProxyDesc(ObjectInputStream.java:1826) ~[na:1.8.0_131]
at java.io.ObjectInputStream.readClassDesc(ObjectInputStream.java:1713) ~[na:1.8.0_131]
at java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:2000) ~[na:1.8.0_131]
at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1535) ~[na:1.8.0_131]
at java.io.ObjectInputStream.readObject(ObjectInputStream.java:422) ~[na:1.8.0_131]
at com.hazelcast.internal.serialization.impl.JavaDefaultSerializers$JavaSerializer.read(JavaDefaultSerializers.java:79) ~[hazelcast-3.9.4.jar!/:3.9.4]
at com.hazelcast.internal.serialization.impl.JavaDefaultSerializers$JavaSerializer.read(JavaDefaultSerializers.java:72) ~[hazelcast-3.9.4.jar!/:3.9.4]
at com.hazelcast.internal.serialization.impl.StreamSerializerAdapter.read(StreamSerializerAdapter.java:48) ~[hazelcast-3.9.4.jar!/:3.9.4]
at com.hazelcast.internal.serialization.impl.AbstractSerializationService.toObject(AbstractSerializationService.java:191) ~[hazelcast-3.9.4.jar!/:3.9.4]
at com.hazelcast.query.impl.CachedQueryEntry.getValue(CachedQueryEntry.java:75) ~[hazelcast-3.9.4.jar!/:3.9.4]
at com.hazelcast.query.impl.CachedQueryEntry.getTargetObject(CachedQueryEntry.java:108) ~[hazelcast-3.9.4.jar!/:3.9.4]
at com.hazelcast.query.impl.QueryableEntry.extractAttributeValue(QueryableEntry.java:81) ~[hazelcast-3.9.4.jar!/:3.9.4]
at com.hazelcast.query.impl.QueryableEntry.getAttributeValue(QueryableEntry.java:48) ~[hazelcast-3.9.4.jar!/:3.9.4]
at com.hazelcast.query.impl.predicates.AbstractPredicate.readAttributeValue(AbstractPredicate.java:132) ~[hazelcast-3.9.4.jar!/:3.9.4]
at com.hazelcast.query.impl.predicates.AbstractPredicate.apply(AbstractPredicate.java:57) ~[hazelcast-3.9.4.jar!/:3.9.4]
at com.hazelcast.query.PredicateBuilder.apply(PredicateBuilder.java:51) ~[hazelcast-3.9.4.jar!/:3.9.4]
at com.hazelcast.map.impl.query.PartitionScanRunner.run(PartitionScanRunner.java:97) ~[hazelcast-3.9.4.jar!/:3.9.4]
at com.hazelcast.map.impl.query.CallerRunsPartitionScanExecutor.execute(CallerRunsPartitionScanExecutor.java:42) ~[hazelcast-3.9.4.jar!/:3.9.4]
at com.hazelcast.map.impl.query.QueryRunner.runPartitionScanQueryOnGivenOwnedPartition(QueryRunner.java:172) ~[hazelcast-3.9.4.jar!/:3.9.4]
at com.hazelcast.map.impl.query.QueryPartitionOperation.run(QueryPartitionOperation.java:55) ~[hazelcast-3.9.4.jar!/:3.9.4]
at com.hazelcast.spi.impl.operationservice.impl.OperationRunnerImpl.run(OperationRunnerImpl.java:194) ~[hazelcast-3.9.4.jar!/:3.9.4]
at com.hazelcast.spi.impl.operationservice.impl.OperationRunnerImpl.run(OperationRunnerImpl.java:409) ~[hazelcast-3.9.4.jar!/:3.9.4]
at com.hazelcast.spi.impl.operationexecutor.impl.OperationThread.process(OperationThread.java:115) ~[hazelcast-3.9.4.jar!/:3.9.4]
at com.hazelcast.spi.impl.operationexecutor.impl.OperationThread.run(OperationThread.java:100) ~[hazelcast-3.9.4.jar!/:3.9.4]


Tried with config.setClassLoader(getClass().getClassLoader()); in hazelcast configuration class and without it - it fails after some time with the same ClassNotFoundException issue.



Why hazelcast fails with this issue and how to fix it ?










share|improve this question





















  • How do you use com.someOrg.SomeClass? Is it an entry, EntryProcessor, Listener, etc. class?
    – Alparslan Avci
    12 hours ago










  • It is simple POJO: Collection<SomeClass> o = map.values(getPredicate());
    – Daryl
    12 hours ago











  • when you say it fails time to time, do you imply every time you query or occasionally? What else changes on server side? That error simply means that the class definition does not exist on Hazelcast's class path. So the most important thing for you to figure out is the reason why com.someOrg.SomeClass is not on class path.
    – wildnez
    12 hours ago










  • I have a docker image and when I deploy it and call HTTP API - I can reproduce 2 options here: 1. it can work all the time until redeploy; 2. it can fail all the time until redeploy. It is simple Spring Boot app without any additional logic with class loading, etc. (hazelcast cluster with 1 member only)
    – Daryl
    11 hours ago











  • But need to mention, the issue is rarely reproduced. Almost always it works well.
    – Daryl
    11 hours ago














up vote
-3
down vote

favorite












I am starting hazelcast instance in my spring boot application.



Hazelcast configuration



@Configuration
@EnableCaching
public class HazelcastConfig
@Bean
public Config hazelCastConfig()
final Config config = new Config();
config.setClassLoader(getClass().getClassLoader());
config.setInstanceName("cache");
return config;


@Bean
public HazelcastInstance hazelcastInstance()
return Hazelcast.newHazelcastInstance(hazelCastConfig());




And it fails time to time with class not found exception when I call my HTTP endpoint that queries data from hazelcast Map.



java.lang.ClassNotFoundException: com.someOrg.SomeClass
at org.springframework.boot.web.embedded.tomcat.TomcatEmbeddedWebappClassLoader.loadClass(TomcatEmbeddedWebappClassLoader.java:70) ~[spring-boot-2.0.5.RELEASE.jar!/:2.0.5.RELEASE]
at org.apache.catalina.loader.WebappClassLoaderBase.loadClass(WebappClassLoaderBase.java:1137) ~[tomcat-embed-core-8.5.34.jar!/:8.5.34]
at com.hazelcast.nio.ClassLoaderUtil.tryLoadClass(ClassLoaderUtil.java:173) ~[hazelcast-3.9.4.jar!/:3.9.4]
at com.hazelcast.nio.ClassLoaderUtil.loadClass(ClassLoaderUtil.java:147) ~[hazelcast-3.9.4.jar!/:3.9.4]
at com.hazelcast.nio.IOUtil$ClassLoaderAwareObjectInputStream.resolveClass(IOUtil.java:593) ~[hazelcast-3.9.4.jar!/:3.9.4]
at java.io.ObjectInputStream.readNonProxyDesc(ObjectInputStream.java:1826) ~[na:1.8.0_131]
at java.io.ObjectInputStream.readClassDesc(ObjectInputStream.java:1713) ~[na:1.8.0_131]
at java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:2000) ~[na:1.8.0_131]
at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1535) ~[na:1.8.0_131]
at java.io.ObjectInputStream.readObject(ObjectInputStream.java:422) ~[na:1.8.0_131]
at com.hazelcast.internal.serialization.impl.JavaDefaultSerializers$JavaSerializer.read(JavaDefaultSerializers.java:79) ~[hazelcast-3.9.4.jar!/:3.9.4]
at com.hazelcast.internal.serialization.impl.JavaDefaultSerializers$JavaSerializer.read(JavaDefaultSerializers.java:72) ~[hazelcast-3.9.4.jar!/:3.9.4]
at com.hazelcast.internal.serialization.impl.StreamSerializerAdapter.read(StreamSerializerAdapter.java:48) ~[hazelcast-3.9.4.jar!/:3.9.4]
at com.hazelcast.internal.serialization.impl.AbstractSerializationService.toObject(AbstractSerializationService.java:191) ~[hazelcast-3.9.4.jar!/:3.9.4]
at com.hazelcast.query.impl.CachedQueryEntry.getValue(CachedQueryEntry.java:75) ~[hazelcast-3.9.4.jar!/:3.9.4]
at com.hazelcast.query.impl.CachedQueryEntry.getTargetObject(CachedQueryEntry.java:108) ~[hazelcast-3.9.4.jar!/:3.9.4]
at com.hazelcast.query.impl.QueryableEntry.extractAttributeValue(QueryableEntry.java:81) ~[hazelcast-3.9.4.jar!/:3.9.4]
at com.hazelcast.query.impl.QueryableEntry.getAttributeValue(QueryableEntry.java:48) ~[hazelcast-3.9.4.jar!/:3.9.4]
at com.hazelcast.query.impl.predicates.AbstractPredicate.readAttributeValue(AbstractPredicate.java:132) ~[hazelcast-3.9.4.jar!/:3.9.4]
at com.hazelcast.query.impl.predicates.AbstractPredicate.apply(AbstractPredicate.java:57) ~[hazelcast-3.9.4.jar!/:3.9.4]
at com.hazelcast.query.PredicateBuilder.apply(PredicateBuilder.java:51) ~[hazelcast-3.9.4.jar!/:3.9.4]
at com.hazelcast.map.impl.query.PartitionScanRunner.run(PartitionScanRunner.java:97) ~[hazelcast-3.9.4.jar!/:3.9.4]
at com.hazelcast.map.impl.query.CallerRunsPartitionScanExecutor.execute(CallerRunsPartitionScanExecutor.java:42) ~[hazelcast-3.9.4.jar!/:3.9.4]
at com.hazelcast.map.impl.query.QueryRunner.runPartitionScanQueryOnGivenOwnedPartition(QueryRunner.java:172) ~[hazelcast-3.9.4.jar!/:3.9.4]
at com.hazelcast.map.impl.query.QueryPartitionOperation.run(QueryPartitionOperation.java:55) ~[hazelcast-3.9.4.jar!/:3.9.4]
at com.hazelcast.spi.impl.operationservice.impl.OperationRunnerImpl.run(OperationRunnerImpl.java:194) ~[hazelcast-3.9.4.jar!/:3.9.4]
at com.hazelcast.spi.impl.operationservice.impl.OperationRunnerImpl.run(OperationRunnerImpl.java:409) ~[hazelcast-3.9.4.jar!/:3.9.4]
at com.hazelcast.spi.impl.operationexecutor.impl.OperationThread.process(OperationThread.java:115) ~[hazelcast-3.9.4.jar!/:3.9.4]
at com.hazelcast.spi.impl.operationexecutor.impl.OperationThread.run(OperationThread.java:100) ~[hazelcast-3.9.4.jar!/:3.9.4]


Tried with config.setClassLoader(getClass().getClassLoader()); in hazelcast configuration class and without it - it fails after some time with the same ClassNotFoundException issue.



Why hazelcast fails with this issue and how to fix it ?










share|improve this question





















  • How do you use com.someOrg.SomeClass? Is it an entry, EntryProcessor, Listener, etc. class?
    – Alparslan Avci
    12 hours ago










  • It is simple POJO: Collection<SomeClass> o = map.values(getPredicate());
    – Daryl
    12 hours ago











  • when you say it fails time to time, do you imply every time you query or occasionally? What else changes on server side? That error simply means that the class definition does not exist on Hazelcast's class path. So the most important thing for you to figure out is the reason why com.someOrg.SomeClass is not on class path.
    – wildnez
    12 hours ago










  • I have a docker image and when I deploy it and call HTTP API - I can reproduce 2 options here: 1. it can work all the time until redeploy; 2. it can fail all the time until redeploy. It is simple Spring Boot app without any additional logic with class loading, etc. (hazelcast cluster with 1 member only)
    – Daryl
    11 hours ago











  • But need to mention, the issue is rarely reproduced. Almost always it works well.
    – Daryl
    11 hours ago












up vote
-3
down vote

favorite









up vote
-3
down vote

favorite











I am starting hazelcast instance in my spring boot application.



Hazelcast configuration



@Configuration
@EnableCaching
public class HazelcastConfig
@Bean
public Config hazelCastConfig()
final Config config = new Config();
config.setClassLoader(getClass().getClassLoader());
config.setInstanceName("cache");
return config;


@Bean
public HazelcastInstance hazelcastInstance()
return Hazelcast.newHazelcastInstance(hazelCastConfig());




And it fails time to time with class not found exception when I call my HTTP endpoint that queries data from hazelcast Map.



java.lang.ClassNotFoundException: com.someOrg.SomeClass
at org.springframework.boot.web.embedded.tomcat.TomcatEmbeddedWebappClassLoader.loadClass(TomcatEmbeddedWebappClassLoader.java:70) ~[spring-boot-2.0.5.RELEASE.jar!/:2.0.5.RELEASE]
at org.apache.catalina.loader.WebappClassLoaderBase.loadClass(WebappClassLoaderBase.java:1137) ~[tomcat-embed-core-8.5.34.jar!/:8.5.34]
at com.hazelcast.nio.ClassLoaderUtil.tryLoadClass(ClassLoaderUtil.java:173) ~[hazelcast-3.9.4.jar!/:3.9.4]
at com.hazelcast.nio.ClassLoaderUtil.loadClass(ClassLoaderUtil.java:147) ~[hazelcast-3.9.4.jar!/:3.9.4]
at com.hazelcast.nio.IOUtil$ClassLoaderAwareObjectInputStream.resolveClass(IOUtil.java:593) ~[hazelcast-3.9.4.jar!/:3.9.4]
at java.io.ObjectInputStream.readNonProxyDesc(ObjectInputStream.java:1826) ~[na:1.8.0_131]
at java.io.ObjectInputStream.readClassDesc(ObjectInputStream.java:1713) ~[na:1.8.0_131]
at java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:2000) ~[na:1.8.0_131]
at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1535) ~[na:1.8.0_131]
at java.io.ObjectInputStream.readObject(ObjectInputStream.java:422) ~[na:1.8.0_131]
at com.hazelcast.internal.serialization.impl.JavaDefaultSerializers$JavaSerializer.read(JavaDefaultSerializers.java:79) ~[hazelcast-3.9.4.jar!/:3.9.4]
at com.hazelcast.internal.serialization.impl.JavaDefaultSerializers$JavaSerializer.read(JavaDefaultSerializers.java:72) ~[hazelcast-3.9.4.jar!/:3.9.4]
at com.hazelcast.internal.serialization.impl.StreamSerializerAdapter.read(StreamSerializerAdapter.java:48) ~[hazelcast-3.9.4.jar!/:3.9.4]
at com.hazelcast.internal.serialization.impl.AbstractSerializationService.toObject(AbstractSerializationService.java:191) ~[hazelcast-3.9.4.jar!/:3.9.4]
at com.hazelcast.query.impl.CachedQueryEntry.getValue(CachedQueryEntry.java:75) ~[hazelcast-3.9.4.jar!/:3.9.4]
at com.hazelcast.query.impl.CachedQueryEntry.getTargetObject(CachedQueryEntry.java:108) ~[hazelcast-3.9.4.jar!/:3.9.4]
at com.hazelcast.query.impl.QueryableEntry.extractAttributeValue(QueryableEntry.java:81) ~[hazelcast-3.9.4.jar!/:3.9.4]
at com.hazelcast.query.impl.QueryableEntry.getAttributeValue(QueryableEntry.java:48) ~[hazelcast-3.9.4.jar!/:3.9.4]
at com.hazelcast.query.impl.predicates.AbstractPredicate.readAttributeValue(AbstractPredicate.java:132) ~[hazelcast-3.9.4.jar!/:3.9.4]
at com.hazelcast.query.impl.predicates.AbstractPredicate.apply(AbstractPredicate.java:57) ~[hazelcast-3.9.4.jar!/:3.9.4]
at com.hazelcast.query.PredicateBuilder.apply(PredicateBuilder.java:51) ~[hazelcast-3.9.4.jar!/:3.9.4]
at com.hazelcast.map.impl.query.PartitionScanRunner.run(PartitionScanRunner.java:97) ~[hazelcast-3.9.4.jar!/:3.9.4]
at com.hazelcast.map.impl.query.CallerRunsPartitionScanExecutor.execute(CallerRunsPartitionScanExecutor.java:42) ~[hazelcast-3.9.4.jar!/:3.9.4]
at com.hazelcast.map.impl.query.QueryRunner.runPartitionScanQueryOnGivenOwnedPartition(QueryRunner.java:172) ~[hazelcast-3.9.4.jar!/:3.9.4]
at com.hazelcast.map.impl.query.QueryPartitionOperation.run(QueryPartitionOperation.java:55) ~[hazelcast-3.9.4.jar!/:3.9.4]
at com.hazelcast.spi.impl.operationservice.impl.OperationRunnerImpl.run(OperationRunnerImpl.java:194) ~[hazelcast-3.9.4.jar!/:3.9.4]
at com.hazelcast.spi.impl.operationservice.impl.OperationRunnerImpl.run(OperationRunnerImpl.java:409) ~[hazelcast-3.9.4.jar!/:3.9.4]
at com.hazelcast.spi.impl.operationexecutor.impl.OperationThread.process(OperationThread.java:115) ~[hazelcast-3.9.4.jar!/:3.9.4]
at com.hazelcast.spi.impl.operationexecutor.impl.OperationThread.run(OperationThread.java:100) ~[hazelcast-3.9.4.jar!/:3.9.4]


Tried with config.setClassLoader(getClass().getClassLoader()); in hazelcast configuration class and without it - it fails after some time with the same ClassNotFoundException issue.



Why hazelcast fails with this issue and how to fix it ?










share|improve this question













I am starting hazelcast instance in my spring boot application.



Hazelcast configuration



@Configuration
@EnableCaching
public class HazelcastConfig
@Bean
public Config hazelCastConfig()
final Config config = new Config();
config.setClassLoader(getClass().getClassLoader());
config.setInstanceName("cache");
return config;


@Bean
public HazelcastInstance hazelcastInstance()
return Hazelcast.newHazelcastInstance(hazelCastConfig());




And it fails time to time with class not found exception when I call my HTTP endpoint that queries data from hazelcast Map.



java.lang.ClassNotFoundException: com.someOrg.SomeClass
at org.springframework.boot.web.embedded.tomcat.TomcatEmbeddedWebappClassLoader.loadClass(TomcatEmbeddedWebappClassLoader.java:70) ~[spring-boot-2.0.5.RELEASE.jar!/:2.0.5.RELEASE]
at org.apache.catalina.loader.WebappClassLoaderBase.loadClass(WebappClassLoaderBase.java:1137) ~[tomcat-embed-core-8.5.34.jar!/:8.5.34]
at com.hazelcast.nio.ClassLoaderUtil.tryLoadClass(ClassLoaderUtil.java:173) ~[hazelcast-3.9.4.jar!/:3.9.4]
at com.hazelcast.nio.ClassLoaderUtil.loadClass(ClassLoaderUtil.java:147) ~[hazelcast-3.9.4.jar!/:3.9.4]
at com.hazelcast.nio.IOUtil$ClassLoaderAwareObjectInputStream.resolveClass(IOUtil.java:593) ~[hazelcast-3.9.4.jar!/:3.9.4]
at java.io.ObjectInputStream.readNonProxyDesc(ObjectInputStream.java:1826) ~[na:1.8.0_131]
at java.io.ObjectInputStream.readClassDesc(ObjectInputStream.java:1713) ~[na:1.8.0_131]
at java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:2000) ~[na:1.8.0_131]
at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1535) ~[na:1.8.0_131]
at java.io.ObjectInputStream.readObject(ObjectInputStream.java:422) ~[na:1.8.0_131]
at com.hazelcast.internal.serialization.impl.JavaDefaultSerializers$JavaSerializer.read(JavaDefaultSerializers.java:79) ~[hazelcast-3.9.4.jar!/:3.9.4]
at com.hazelcast.internal.serialization.impl.JavaDefaultSerializers$JavaSerializer.read(JavaDefaultSerializers.java:72) ~[hazelcast-3.9.4.jar!/:3.9.4]
at com.hazelcast.internal.serialization.impl.StreamSerializerAdapter.read(StreamSerializerAdapter.java:48) ~[hazelcast-3.9.4.jar!/:3.9.4]
at com.hazelcast.internal.serialization.impl.AbstractSerializationService.toObject(AbstractSerializationService.java:191) ~[hazelcast-3.9.4.jar!/:3.9.4]
at com.hazelcast.query.impl.CachedQueryEntry.getValue(CachedQueryEntry.java:75) ~[hazelcast-3.9.4.jar!/:3.9.4]
at com.hazelcast.query.impl.CachedQueryEntry.getTargetObject(CachedQueryEntry.java:108) ~[hazelcast-3.9.4.jar!/:3.9.4]
at com.hazelcast.query.impl.QueryableEntry.extractAttributeValue(QueryableEntry.java:81) ~[hazelcast-3.9.4.jar!/:3.9.4]
at com.hazelcast.query.impl.QueryableEntry.getAttributeValue(QueryableEntry.java:48) ~[hazelcast-3.9.4.jar!/:3.9.4]
at com.hazelcast.query.impl.predicates.AbstractPredicate.readAttributeValue(AbstractPredicate.java:132) ~[hazelcast-3.9.4.jar!/:3.9.4]
at com.hazelcast.query.impl.predicates.AbstractPredicate.apply(AbstractPredicate.java:57) ~[hazelcast-3.9.4.jar!/:3.9.4]
at com.hazelcast.query.PredicateBuilder.apply(PredicateBuilder.java:51) ~[hazelcast-3.9.4.jar!/:3.9.4]
at com.hazelcast.map.impl.query.PartitionScanRunner.run(PartitionScanRunner.java:97) ~[hazelcast-3.9.4.jar!/:3.9.4]
at com.hazelcast.map.impl.query.CallerRunsPartitionScanExecutor.execute(CallerRunsPartitionScanExecutor.java:42) ~[hazelcast-3.9.4.jar!/:3.9.4]
at com.hazelcast.map.impl.query.QueryRunner.runPartitionScanQueryOnGivenOwnedPartition(QueryRunner.java:172) ~[hazelcast-3.9.4.jar!/:3.9.4]
at com.hazelcast.map.impl.query.QueryPartitionOperation.run(QueryPartitionOperation.java:55) ~[hazelcast-3.9.4.jar!/:3.9.4]
at com.hazelcast.spi.impl.operationservice.impl.OperationRunnerImpl.run(OperationRunnerImpl.java:194) ~[hazelcast-3.9.4.jar!/:3.9.4]
at com.hazelcast.spi.impl.operationservice.impl.OperationRunnerImpl.run(OperationRunnerImpl.java:409) ~[hazelcast-3.9.4.jar!/:3.9.4]
at com.hazelcast.spi.impl.operationexecutor.impl.OperationThread.process(OperationThread.java:115) ~[hazelcast-3.9.4.jar!/:3.9.4]
at com.hazelcast.spi.impl.operationexecutor.impl.OperationThread.run(OperationThread.java:100) ~[hazelcast-3.9.4.jar!/:3.9.4]


Tried with config.setClassLoader(getClass().getClassLoader()); in hazelcast configuration class and without it - it fails after some time with the same ClassNotFoundException issue.



Why hazelcast fails with this issue and how to fix it ?







java spring-boot hazelcast






share|improve this question













share|improve this question











share|improve this question




share|improve this question










asked 12 hours ago









Daryl

351415




351415











  • How do you use com.someOrg.SomeClass? Is it an entry, EntryProcessor, Listener, etc. class?
    – Alparslan Avci
    12 hours ago










  • It is simple POJO: Collection<SomeClass> o = map.values(getPredicate());
    – Daryl
    12 hours ago











  • when you say it fails time to time, do you imply every time you query or occasionally? What else changes on server side? That error simply means that the class definition does not exist on Hazelcast's class path. So the most important thing for you to figure out is the reason why com.someOrg.SomeClass is not on class path.
    – wildnez
    12 hours ago










  • I have a docker image and when I deploy it and call HTTP API - I can reproduce 2 options here: 1. it can work all the time until redeploy; 2. it can fail all the time until redeploy. It is simple Spring Boot app without any additional logic with class loading, etc. (hazelcast cluster with 1 member only)
    – Daryl
    11 hours ago











  • But need to mention, the issue is rarely reproduced. Almost always it works well.
    – Daryl
    11 hours ago
















  • How do you use com.someOrg.SomeClass? Is it an entry, EntryProcessor, Listener, etc. class?
    – Alparslan Avci
    12 hours ago










  • It is simple POJO: Collection<SomeClass> o = map.values(getPredicate());
    – Daryl
    12 hours ago











  • when you say it fails time to time, do you imply every time you query or occasionally? What else changes on server side? That error simply means that the class definition does not exist on Hazelcast's class path. So the most important thing for you to figure out is the reason why com.someOrg.SomeClass is not on class path.
    – wildnez
    12 hours ago










  • I have a docker image and when I deploy it and call HTTP API - I can reproduce 2 options here: 1. it can work all the time until redeploy; 2. it can fail all the time until redeploy. It is simple Spring Boot app without any additional logic with class loading, etc. (hazelcast cluster with 1 member only)
    – Daryl
    11 hours ago











  • But need to mention, the issue is rarely reproduced. Almost always it works well.
    – Daryl
    11 hours ago















How do you use com.someOrg.SomeClass? Is it an entry, EntryProcessor, Listener, etc. class?
– Alparslan Avci
12 hours ago




How do you use com.someOrg.SomeClass? Is it an entry, EntryProcessor, Listener, etc. class?
– Alparslan Avci
12 hours ago












It is simple POJO: Collection<SomeClass> o = map.values(getPredicate());
– Daryl
12 hours ago





It is simple POJO: Collection<SomeClass> o = map.values(getPredicate());
– Daryl
12 hours ago













when you say it fails time to time, do you imply every time you query or occasionally? What else changes on server side? That error simply means that the class definition does not exist on Hazelcast's class path. So the most important thing for you to figure out is the reason why com.someOrg.SomeClass is not on class path.
– wildnez
12 hours ago




when you say it fails time to time, do you imply every time you query or occasionally? What else changes on server side? That error simply means that the class definition does not exist on Hazelcast's class path. So the most important thing for you to figure out is the reason why com.someOrg.SomeClass is not on class path.
– wildnez
12 hours ago












I have a docker image and when I deploy it and call HTTP API - I can reproduce 2 options here: 1. it can work all the time until redeploy; 2. it can fail all the time until redeploy. It is simple Spring Boot app without any additional logic with class loading, etc. (hazelcast cluster with 1 member only)
– Daryl
11 hours ago





I have a docker image and when I deploy it and call HTTP API - I can reproduce 2 options here: 1. it can work all the time until redeploy; 2. it can fail all the time until redeploy. It is simple Spring Boot app without any additional logic with class loading, etc. (hazelcast cluster with 1 member only)
– Daryl
11 hours ago













But need to mention, the issue is rarely reproduced. Almost always it works well.
– Daryl
11 hours ago




But need to mention, the issue is rarely reproduced. Almost always it works well.
– Daryl
11 hours ago

















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