HazelcastEntryProcessorAdapter calss not found #186

haiderali22 · 2021-10-28T20:19:44Z

haiderali22
Oct 28, 2021

tokenBucket.tryConsumeAndReturnRemaining(1)
When above code is executed exception is thrown with stack trace

Servlet.service() for servlet [dispatcherServlet] in context with path [] threw exception [Request processing failed; nested exception is com.hazelcast.nio.serialization.HazelcastSerializationException: java.lang.ClassNotFoundException: io.github.bucket4j.grid.hazelcast.HazelcastEntryProcessorAdapter] with root cause 

java.lang.ClassNotFoundException: io.github.bucket4j.grid.hazelcast.HazelcastEntryProcessorAdapter
	at jdk.internal.loader.BuiltinClassLoader.loadClass(BuiltinClassLoader.java:581) ~[na:na]
	at jdk.internal.loader.ClassLoaders$AppClassLoader.loadClass(ClassLoaders.java:178) ~[na:na]
	at java.lang.ClassLoader.loadClass(ClassLoader.java:522) ~[na:na]
	at com.hazelcast.internal.nio.ClassLoaderUtil.tryLoadClass(ClassLoaderUtil.java:289) ~[hazelcast-4.2.jar:4.2]
	at com.hazelcast.internal.nio.ClassLoaderUtil.loadClass(ClassLoaderUtil.java:249) ~[hazelcast-4.2.jar:4.2]
	at com.hazelcast.internal.nio.IOUtil$ClassLoaderAwareObjectInputStream.resolveClass(IOUtil.java:910) ~[hazelcast-4.2.jar:4.2]
	at java.io.ObjectInputStream.readNonProxyDesc(ObjectInputStream.java:1995) ~[na:na]
	at java.io.ObjectInputStream.readClassDesc(ObjectInputStream.java:1862) ~[na:na]
	at java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:2169) ~[na:na]
	at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1679) ~[na:na]
	at java.io.ObjectInputStream.readObject(ObjectInputStream.java:493) ~[na:na]
	at java.io.ObjectInputStream.readObject(ObjectInputStream.java:451) ~[na:na]
	at com.hazelcast.internal.serialization.impl.defaultserializers.JavaDefaultSerializers$JavaSerializer.read(JavaDefaultSerializers.java:86) ~[hazelcast-4.2.jar:4.2]
	at com.hazelcast.internal.serialization.impl.defaultserializers.JavaDefaultSerializers$JavaSerializer.read(JavaDefaultSerializers.java:79) ~[hazelcast-4.2.jar:4.2]
	at com.hazelcast.internal.serialization.impl.StreamSerializerAdapter.read(StreamSerializerAdapter.java:44) ~[hazelcast-4.2.jar:4.2]
	at com.hazelcast.internal.serialization.impl.AbstractSerializationService.toObject(AbstractSerializationService.java:208) ~[hazelcast-4.2.jar:4.2]
	at com.hazelcast.client.impl.protocol.task.map.MapExecuteOnKeyMessageTask.prepareOperation(MapExecuteOnKeyMessageTask.java:42) ~[hazelcast-4.2.jar:4.2]
	at com.hazelcast.client.impl.protocol.task.AbstractPartitionMessageTask.processInternal(AbstractPartitionMessageTask.java:45) ~[hazelcast-4.2.jar:4.2]
	at com.hazelcast.client.impl.protocol.task.AbstractAsyncMessageTask.processMessage(AbstractAsyncMessageTask.java:71) ~[hazelcast-4.2.jar:4.2]
	at com.hazelcast.client.impl.protocol.task.AbstractMessageTask.initializeAndProcessMessage(AbstractMessageTask.java:153) ~[hazelcast-4.2.jar:4.2]
	at com.hazelcast.client.impl.protocol.task.AbstractMessageTask.run(AbstractMessageTask.java:116) ~[hazelcast-4.2.jar:4.2]
	at com.hazelcast.spi.impl.operationservice.impl.OperationRunnerImpl.run(OperationRunnerImpl.java:192) ~[hazelcast-4.2.jar:4.2]
	at com.hazelcast.spi.impl.operationexecutor.impl.OperationThread.process(OperationThread.java:207) ~[hazelcast-4.2.jar:4.2]
	at com.hazelcast.spi.impl.operationexecutor.impl.OperationThread.process(OperationThread.java:141) ~[hazelcast-4.2.jar:4.2]
	at com.hazelcast.spi.impl.operationexecutor.impl.OperationThread.executeRun(OperationThread.java:123) ~[hazelcast-4.2.jar:4.2]
	at com.hazelcast.internal.util.executor.HazelcastManagedThread.run(HazelcastManagedThread.java:102) ~[hazelcast-4.2.jar:4.2]

If i import this class in my file i.e.
import io.github.bucket4j.grid.hazelcast.HazelcastEntryProcessorAdapter;
its says The type io.github.bucket4j.grid.hazelcast.HazelcastEntryProcessorAdapter is not visible.

Answered by vladimir-bukhtoyarov

Oct 29, 2021

@haiderali22

I suppose that I have found the problem. When you are using the ADD https://repo.maven.apache.org/maven2/com/github/vladimir-bukhtoyarov/bucket4j-core/$BUCKET4J_VERSION/bucket4j-core-$BUCKET4J_VERSION.jar ${HZ_HOME}/lib it creates the files with wrong permissions -rw------- while jars that added by Hazelcast guys have -rw-r--r-- permissions, as result JVM can not use added jars as classpath entry.

So you need to fix the permissions for added files

FROM hazelcast/hazelcast:4.2
USER root

ENV BUCKET4J_VERSION 6.3.0
ENV JCACHE_VERSION 1.1.1
ENV HZ_VERSION 4.2

# Adding custom hazelcast.xml
ADD hazelcast.xml ${HZ_HOME}
ENV JAVA_OPTS -Dhazelcast.config=${HZ_HOME}/hazelcast.xml

# D…

View full answer

vladimir-bukhtoyarov · 2021-10-28T20:34:21Z

vladimir-bukhtoyarov
Oct 28, 2021
Maintainer

@haiderali22 Hello,

If i import this class in my file i.e.
import io.github.bucket4j.grid.hazelcast.HazelcastEntryProcessorAdapter;
its says The type io.github.bucket4j.grid.hazelcast.HazelcastEntryProcessorAdapter is not visible.

It is class with package visibility https://github.com/vladimir-bukhtoyarov/bucket4j/blob/6.3/bucket4j-hazelcast-all/bucket4j-hazelcast/src/main/java/io/github/bucket4j/grid/hazelcast/HazelcastEntryProcessorAdapter.java#L32

When above code is executed exception is thrown with stack trace

You need to place bucket4j related jars on all nodes of the Hazelcast cluster, this exception usually is thrown when remote node does not contain Bucket4j classes.

1 reply

haiderali22 Oct 29, 2021
Author

I created a docker file with following configuration

FROM hazelcast/hazelcast:4.2

ENV BUCKET4J_VERSION 6.3.0
ENV JCACHE_VERSION 1.1.1
ENV HZ_VERSION 4.2

# Adding custom hazelcast.xml
ADD hazelcast.xml ${HZ_HOME}
ENV JAVA_OPTS -Dhazelcast.config=${HZ_HOME}/hazelcast.xml

# Download  bucket4j jars from maven repo.
ADD https://repo.maven.apache.org/maven2/com/github/vladimir-bukhtoyarov/bucket4j-core/$BUCKET4J_VERSION/bucket4j-core-$BUCKET4J_VERSION.jar ${HZ_HOME}/lib
ADD https://repo.maven.apache.org/maven2/com/github/vladimir-bukhtoyarov/bucket4j-jcache/$BUCKET4J_VERSION/bucket4j-jcache-$BUCKET4J_VERSION.jar ${HZ_HOME}/lib
ADD https://repo.maven.apache.org/maven2/com/github/vladimir-bukhtoyarov/bucket4j-hazelcast/$BUCKET4J_VERSION/bucket4j-hazelcast-$BUCKET4J_VERSION.jar ${HZ_HOME}/lib

and hazzelecast xml as

<?xml version="1.0" encoding="UTF-8"?>
<hazelcast xmlns="http://www.hazelcast.com/schema/config"
           xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
           xsi:schemaLocation="http://www.hazelcast.com/schema/config
           http://www.hazelcast.com/schema/config/hazelcast-config-4.2.xsd">
    <map name="buckets">
		<time-to-live-seconds>120</time-to-live-seconds>
		<eviction eviction-policy="NONE" max-size-policy="PER_NODE" size="20000000"/> 
	</map>
	<cache name="buckets">
	</cache>
</hazelcast>

I can also see in my docker bucket4j-core, bucket4j-jcache and bucket4j-hazelcast in lib folder of docker container. I cannot understand why class not found exception is occurring.

vladimir-bukhtoyarov · 2021-10-29T11:39:12Z

vladimir-bukhtoyarov
Oct 29, 2021
Maintainer

@haiderali22

I suppose that I have found the problem. When you are using the ADD https://repo.maven.apache.org/maven2/com/github/vladimir-bukhtoyarov/bucket4j-core/$BUCKET4J_VERSION/bucket4j-core-$BUCKET4J_VERSION.jar ${HZ_HOME}/lib it creates the files with wrong permissions -rw------- while jars that added by Hazelcast guys have -rw-r--r-- permissions, as result JVM can not use added jars as classpath entry.

So you need to fix the permissions for added files

FROM hazelcast/hazelcast:4.2
USER root

ENV BUCKET4J_VERSION 6.3.0
ENV JCACHE_VERSION 1.1.1
ENV HZ_VERSION 4.2

# Adding custom hazelcast.xml
ADD hazelcast.xml ${HZ_HOME}
ENV JAVA_OPTS -Dhazelcast.config=${HZ_HOME}/hazelcast.xml

# Download  bucket4j jars from maven repo.
ADD https://repo.maven.apache.org/maven2/com/github/vladimir-bukhtoyarov/bucket4j-core/$BUCKET4J_VERSION/bucket4j-core-$BUCKET4J_VERSION.jar ${HZ_HOME}
ADD https://repo.maven.apache.org/maven2/com/github/vladimir-bukhtoyarov/bucket4j-jcache/$BUCKET4J_VERSION/bucket4j-jcache-$BUCKET4J_VERSION.jar ${HZ_HOME}
ADD https://repo.maven.apache.org/maven2/com/github/vladimir-bukhtoyarov/bucket4j-hazelcast/$BUCKET4J_VERSION/bucket4j-hazelcast-$BUCKET4J_VERSION.jar ${HZ_HOME}
RUN chmod a+r ${HZ_HOME}/bucket4j-*.jar

This is commit 3f9a0f4 that shows that all things work correctly

1 reply

haiderali22 Oct 29, 2021
Author

Thankyou so much

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HazelcastEntryProcessorAdapter calss not found #186

haiderali22 Oct 28, 2021

Replies: 2 comments · 2 replies

vladimir-bukhtoyarov Oct 28, 2021 Maintainer

haiderali22 Oct 29, 2021 Author

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Oct 28, 2021

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