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From Flavio Pompermaier <pomperma...@okkam.it>
Subject Re: ClassReader could not be created
Date Wed, 20 May 2015 10:03:38 GMT
Now I'm able to run the job but I get another exception..this time it seems
that Flink it's not able to split my Parquet file:

Caused by: java.lang.ClassNotFoundException:
parquet.hadoop.ParquetInputSplit
at java.net.URLClassLoader$1.run(URLClassLoader.java:366)
at java.net.URLClassLoader$1.run(URLClassLoader.java:355)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(URLClassLoader.java:354)
at java.lang.ClassLoader.loadClass(ClassLoader.java:425)
at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:308)
at java.lang.ClassLoader.loadClass(ClassLoader.java:358)
at java.lang.Class.forName0(Native Method)
at java.lang.Class.forName(Class.java:190)
at
org.apache.flink.api.java.hadoop.mapreduce.wrapper.HadoopInputSplit.readObject(HadoopInputSplit.java:104)

I checked the jar and that class is present in my "fat" jar.
What should I do now?


On Wed, May 20, 2015 at 10:57 AM, Flavio Pompermaier <pompermaier@okkam.it>
wrote:

> Yes it could be that the jar classes and those on the cluster are not
> aligned for some days..Now I'll recompile both sides and if I still have
> the error I will change line 42 as you suggested.
> Tanks Max
>
> On Wed, May 20, 2015 at 10:53 AM, Maximilian Michels <mxm@apache.org>
> wrote:
>
>> Hi Flavio,
>>
>> It would be helpful, if we knew which class could not be found. In the
>> ClosureCleaner, can you change line 42 to include the class name in the
>> error message? Like in this example:
>>
>> private static ClassReader getClassReader(Class<?> cls) {
>>    String className = cls.getName().replaceFirst("^.*\\.", "") + ".class";
>>    try {
>>       return new ClassReader(cls.getResourceAsStream(className));
>>    } catch (IOException e) {
>>       throw new RuntimeException("Could not create ClassReader for class " + cls.getName()
+ ":" + e);
>>    }
>> }
>>
>> Could it be that you're running an old job on the latest snapshot
>> version? This could cause class-related problems...
>>
>> Cheers,
>> Max
>>
>> On Wed, May 20, 2015 at 9:41 AM, Flavio Pompermaier <pompermaier@okkam.it
>> > wrote:
>>
>>> Any insight about this..?
>>>
>>> On Tue, May 19, 2015 at 12:49 PM, Flavio Pompermaier <
>>> pompermaier@okkam.it> wrote:
>>>
>>>> Hi to all,
>>>>
>>>> I tried to run my job on a brand new Flink cluster (0.9-SNAPSHOT) from
>>>> the web client UI using the shading strategy of the quickstart example but
>>>> I get this exception:
>>>>
>>>> Caused by: java.lang.RuntimeException: Could not create ClassReader:
>>>> java.io.IOException: Class not found
>>>> at
>>>> org.apache.flink.api.java.ClosureCleaner.getClassReader(ClosureCleaner.java:42)
>>>> at
>>>> org.apache.flink.api.java.ClosureCleaner.cleanThis0(ClosureCleaner.java:67)
>>>> at
>>>> org.apache.flink.api.java.ClosureCleaner.clean(ClosureCleaner.java:54)
>>>>
>>>> It seems that it cannot find some kryo class..how do I fix this? this
>>>> is my shade plugin section of pom.xml:
>>>>
>>>>
>>>> <plugin>
>>>> <groupId>org.apache.maven.plugins</groupId>
>>>> <artifactId>maven-shade-plugin</artifactId>
>>>> <version>1.4</version>
>>>> <executions>
>>>> <execution>
>>>> <phase>package</phase>
>>>> <goals>
>>>> <goal>shade</goal>
>>>> </goals>
>>>> <configuration>
>>>> <artifactSet>
>>>> <excludes>
>>>> <!-- This list contains all dependencies of flink-dist Everything
>>>> else will be packaged into the fat-jar -->
>>>> <exclude>org.apache.flink:flink-shaded-*</exclude>
>>>> <exclude>org.apache.flink:flink-core</exclude>
>>>> <exclude>org.apache.flink:flink-java</exclude>
>>>> <exclude>org.apache.flink:flink-scala</exclude>
>>>> <exclude>org.apache.flink:flink-runtime</exclude>
>>>> <exclude>org.apache.flink:flink-optimizer</exclude>
>>>> <exclude>org.apache.flink:flink-clients</exclude>
>>>> <exclude>org.apache.flink:flink-spargel</exclude>
>>>> <exclude>org.apache.flink:flink-avro</exclude>
>>>> <exclude>org.apache.flink:flink-java-examples</exclude>
>>>> <exclude>org.apache.flink:flink-scala-examples</exclude>
>>>> <exclude>org.apache.flink:flink-streaming-examples</exclude>
>>>> <exclude>org.apache.flink:flink-streaming-core</exclude>
>>>>
>>>> <!-- Also exclude very big transitive dependencies of Flink WARNING:
>>>> You have to remove these excludes if your code relies on other versions
>>>> of
>>>> these dependencies. -->
>>>> <exclude>org.scala-lang:scala-library</exclude>
>>>> <exclude>org.scala-lang:scala-compiler</exclude>
>>>> <exclude>org.scala-lang:scala-reflect</exclude>
>>>> <exclude>com.amazonaws:aws-java-sdk</exclude>
>>>> <exclude>com.typesafe.akka:akka-actor_*</exclude>
>>>> <exclude>com.typesafe.akka:akka-remote_*</exclude>
>>>> <exclude>com.typesafe.akka:akka-slf4j_*</exclude>
>>>> <exclude>io.netty:netty-all</exclude>
>>>> <exclude>io.netty:netty</exclude>
>>>> <exclude>org.eclipse.jetty:jetty-server</exclude>
>>>> <exclude>org.eclipse.jetty:jetty-continuation</exclude>
>>>> <exclude>org.eclipse.jetty:jetty-http</exclude>
>>>> <exclude>org.eclipse.jetty:jetty-io</exclude>
>>>> <exclude>org.eclipse.jetty:jetty-util</exclude>
>>>> <exclude>org.eclipse.jetty:jetty-security</exclude>
>>>> <exclude>org.eclipse.jetty:jetty-servlet</exclude>
>>>> <exclude>commons-fileupload:commons-fileupload</exclude>
>>>> <exclude>org.apache.avro:avro</exclude>
>>>> <exclude>commons-collections:commons-collections</exclude>
>>>> <exclude>org.codehaus.jackson:jackson-core-asl</exclude>
>>>> <exclude>org.codehaus.jackson:jackson-mapper-asl</exclude>
>>>> <exclude>com.thoughtworks.paranamer:paranamer</exclude>
>>>> <exclude>org.xerial.snappy:snappy-java</exclude>
>>>> <exclude>org.apache.commons:commons-compress</exclude>
>>>> <exclude>org.tukaani:xz</exclude>
>>>> <exclude>com.esotericsoftware.kryo:kryo</exclude>
>>>> <exclude>com.esotericsoftware.minlog:minlog</exclude>
>>>> <exclude>org.objenesis:objenesis</exclude>
>>>> <exclude>com.twitter:chill_*</exclude>
>>>> <exclude>com.twitter:chill-java</exclude>
>>>> <exclude>com.twitter:chill-avro_*</exclude>
>>>> <exclude>com.twitter:chill-bijection_*</exclude>
>>>> <exclude>com.twitter:bijection-core_*</exclude>
>>>> <exclude>com.twitter:bijection-avro_*</exclude>
>>>> <exclude>com.twitter:chill-protobuf</exclude>
>>>> <exclude>com.google.protobuf:protobuf-java</exclude>
>>>> <exclude>com.twitter:chill-thrift</exclude>
>>>> <exclude>org.apache.thrift:libthrift</exclude>
>>>> <exclude>commons-lang:commons-lang</exclude>
>>>> <exclude>junit:junit</exclude>
>>>> <exclude>de.javakaffee:kryo-serializers</exclude>
>>>> <exclude>joda-time:joda-time</exclude>
>>>> <exclude>org.apache.commons:commons-lang3</exclude>
>>>> <exclude>org.slf4j:slf4j-api</exclude>
>>>> <exclude>org.slf4j:slf4j-log4j12</exclude>
>>>> <exclude>log4j:log4j</exclude>
>>>> <exclude>org.apache.commons:commons-math</exclude>
>>>> <exclude>org.apache.sling:org.apache.sling.commons.json</exclude>
>>>> <exclude>commons-logging:commons-logging</exclude>
>>>> <exclude>org.apache.httpcomponents:httpclient</exclude>
>>>> <exclude>org.apache.httpcomponents:httpcore</exclude>
>>>> <exclude>commons-codec:commons-codec</exclude>
>>>> <exclude>com.fasterxml.jackson.core:jackson-core</exclude>
>>>> <exclude>com.fasterxml.jackson.core:jackson-databind</exclude>
>>>> <exclude>com.fasterxml.jackson.core:jackson-annotations</exclude>
>>>> <exclude>org.codehaus.jettison:jettison</exclude>
>>>> <exclude>stax:stax-api</exclude>
>>>> <exclude>com.typesafe:config</exclude>
>>>> <exclude>org.uncommons.maths:uncommons-maths</exclude>
>>>> <exclude>com.github.scopt:scopt_*</exclude>
>>>> <exclude>org.mortbay.jetty:servlet-api</exclude>
>>>> <exclude>commons-io:commons-io</exclude>
>>>> <exclude>commons-cli:commons-cli</exclude>
>>>> </excludes>
>>>> </artifactSet>
>>>> <filters>
>>>> <filter>
>>>> <artifact>org.apache.flink:*</artifact>
>>>> <excludes>
>>>> <exclude>org/apache/flink/shaded/**</exclude>
>>>> <exclude>web-docs/**</exclude>
>>>> </excludes>
>>>> </filter>
>>>> </filters>
>>>> <createDependencyReducedPom>false</createDependencyReducedPom>
>>>> <finalName>XXXX</finalName>
>>>> <transformers>
>>>> <!-- add Main-Class to manifest file -->
>>>> <transformer
>>>>
>>>> implementation="org.apache.maven.plugins.shade.resource.ManifestResourceTransformer">
>>>> <manifestEntries>
>>>> <Main-Class>XXX</Main-Class>
>>>> </manifestEntries>
>>>> </transformer>
>>>> </transformers>
>>>> </configuration>
>>>> </execution>
>>>> </executions>
>>>> </plugin>
>>>>
>>>
>>>
>>
>
>

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