Hi Chesnay, no, we haven't changed our Hadoop version. The only changes were 
the update the 1.11.2 runtime dependencies listed earlier, as well as compiling 
with the flink-clients in some of our modules since we were relying  on the 
transitive dependency. Our 1.9.2 jobs are still able to run just fine, which is 
interesting.

// ah

From: Chesnay Schepler <ches...@apache.org>
Sent: Thursday, October 15, 2020 7:34 AM
To: Hailu, Andreas [Engineering] <andreas.ha...@ny.email.gs.com>; 
user@flink.apache.org
Subject: Re: Runtime Dependency Issues Upgrading to Flink 1.11.2 from 1.9.2

I'm not aware of any Flink module bundling this class. Note that this class is 
also bundled in jersey-core (which is also on your classpath), so it appears 
that there is a conflict between this jar and your shaded one.
Have you changed the Hadoop version you are using or how you provide them to 
Flink?

On 10/14/2020 6:56 PM, Hailu, Andreas wrote:
Hi team! We're trying to upgrade our applications from 1.9.2 to 1.11.2. After 
re-compiling and updating our runtime dependencies to use 1.11.2, we see this 
LinkageError:

Caused by: java.lang.LinkageError: ClassCastException: attempting to 
castjar:file:/local/data/scratch/hailua_p2epdlsuat/flink-ingest-refiner-sandbox-SNAPSHOT-fat-shaded.jar!/javax/ws/rs/ext/RuntimeDelegate.class<file://local/data/scratch/hailua_p2epdlsuat/flink-ingest-refiner-sandbox-SNAPSHOT-fat-shaded.jar!/javax/ws/rs/ext/RuntimeDelegate.class>
 to 
jar:file:/local/data/scratch/hailua_p2epdlsuat/flink-ingest-refiner-sandbox-SNAPSHOT-fat-shaded.jar!/javax/ws/rs/ext/RuntimeDelegate.class
        at 
javax.ws.rs.ext.RuntimeDelegate.findDelegate(RuntimeDelegate.java:146) 
~[flink-ingest-refiner-sandbox-SNAPSHOT-fat-shaded.jar:?]
        at 
javax.ws.rs.ext.RuntimeDelegate.getInstance(RuntimeDelegate.java:120) 
~[flink-ingest-refiner-sandbox-SNAPSHOT-fat-shaded.jar:?]
        at javax.ws.rs.core.MediaType.valueOf(MediaType.java:179) 
~[flink-ingest-refiner-sandbox-SNAPSHOT-fat-shaded.jar:?]
        at com.sun.jersey.core.header.MediaTypes.<clinit>(MediaTypes.java:64) 
~[jersey-core-1.9.jar:1.9]
        at 
com.sun.jersey.core.spi.factory.MessageBodyFactory.initReaders(MessageBodyFactory.java:182)
 ~[jersey-core-1.9.jar:1.9]
        at 
com.sun.jersey.core.spi.factory.MessageBodyFactory.initReaders(MessageBodyFactory.java:175)
 ~[jersey-core-1.9.jar:1.9]
        at 
com.sun.jersey.core.spi.factory.MessageBodyFactory.init(MessageBodyFactory.java:162)
 ~[jersey-core-1.9.jar:1.9]
        at com.sun.jersey.api.client.Client.init(Client.java:342) 
~[flink-ingest-refiner-sandbox-SNAPSHOT-fat-shaded.jar:?]
        at com.sun.jersey.api.client.Client.access$000(Client.java:118) 
~[flink-ingest-refiner-sandbox-SNAPSHOT-fat-shaded.jar:?]
        at com.sun.jersey.api.client.Client$1.f(Client.java:191) 
~[flink-ingest-refiner-sandbox-SNAPSHOT-fat-shaded.jar:?]
        at com.sun.jersey.api.client.Client$1.f(Client.java:187) 
~[flink-ingest-refiner-sandbox-SNAPSHOT-fat-shaded.jar:?]
        at com.sun.jersey.spi.inject.Errors.processWithErrors(Errors.java:193) 
~[jersey-core-1.9.jar:1.9]
        at com.sun.jersey.api.client.Client.<init>(Client.java:187) 
~[flink-ingest-refiner-sandbox-SNAPSHOT-fat-shaded.jar:?]
        at com.sun.jersey.api.client.Client.<init>(Client.java:170) 
~[flink-ingest-refiner-sandbox-SNAPSHOT-fat-shaded.jar:?]
        at 
org.apache.hadoop.yarn.client.api.impl.TimelineClientImpl.serviceInit(TimelineClientImpl.java:285)
 ~[hadoop-yarn-common-2.7.3.2.6.3.0-235.jar:?]
        at 
org.apache.hadoop.service.AbstractService.init(AbstractService.java:163) 
~[hadoop-common-2.7.3.2.6.3.0-235.jar:?]
        at 
org.apache.hadoop.yarn.client.api.impl.YarnClientImpl.getTimelineDelegationToken(YarnClientImpl.java:355)
 ~[hadoop-yarn-client-2.7.3.2.6.3.0-235.jar:?]
        at 
org.apache.hadoop.yarn.client.api.impl.YarnClientImpl.addTimelineDelegationToken(YarnClientImpl.java:331)
 ~[hadoop-yarn-client-2.7.3.2.6.3.0-235.jar:?]
        at 
org.apache.hadoop.yarn.client.api.impl.YarnClientImpl.submitApplication(YarnClientImpl.java:250)
 ~[hadoop-yarn-client-2.7.3.2.6.3.0-235.jar:?]
        at 
org.apache.flink.yarn.YarnClusterDescriptor.startAppMaster(YarnClusterDescriptor.java:1002)
 ~[flink-dist_2.11-1.11.2.jar:1.11.2]
        at 
org.apache.flink.yarn.YarnClusterDescriptor.deployInternal(YarnClusterDescriptor.java:524)
 ~[flink-dist_2.11-1.11.2.jar:1.11.2]
        at 
org.apache.flink.yarn.YarnClusterDescriptor.deployJobCluster(YarnClusterDescriptor.java:424)
 ~[flink-dist_2.11-1.11.2.jar:1.11.2]
        at 
org.apache.flink.client.deployment.executors.AbstractJobClusterExecutor.execute(AbstractJobClusterExecutor.java:70)
 ~[flink-dist_2.11-1.11.2.jar:1.11.2]
        at 
org.apache.flink.api.java.ExecutionEnvironment.executeAsync(ExecutionEnvironment.java:973)
 ~[flink-dist_2.11-1.11.2.jar:1.11.2]
        at 
org.apache.flink.client.program.ContextEnvironment.executeAsync(ContextEnvironment.java:124)
 ~[flink-dist_2.11-1.11.2.jar:1.11.2]
        at 
org.apache.flink.client.program.ContextEnvironment.execute(ContextEnvironment.java:72)
 ~[flink-dist_2.11-1.11.2.jar:1.11.2]

I'll note that the flink-ingest-refiner jar is our shaded JAR application that 
we use to submit jobs.
Looking into what dependencies have changed, on 1.9.2 our runtime dependencies 
from the available artifacts (sourced from one of the many mirrors)  are:

1.       flink-dist_2.11-1.9.2.jar

2.       flink-table-blink_2.11-1.9.2.jar

3.       flink-table_2.11-1.9.2.jar

4.       log4j-1.2.17.jar

5.       slf4j-log4j12-1.7.15.jar

Whereas 1.11.2's dependencies are:

1.       flink-dist_2.11-1.11.2.jar

2.       flink-table-blink_2.11-1.11.2.jar

3.       flink-table_2.11-1.11.2.jar

4.       log4j-1.2-api-2.12.1.jar

5.       log4j-api-2.12.1.jar

6.       log4j-core-2.12.1.jar

7.       log4j-slf4j-impl-2.12.1.jar

RuntimeDelegate comes from the javax.ws.rs:javax.ws.rs-api module, which we use 
internally for some of our REST implementations. I've been trying a few things 
here to no avail such as declaring our dependency on rs-api as compileOnly. 
Curious to hear your thoughts. Was there a version change in one of the above 
listed 1.11.2 modules?

____________

Andreas Hailu
Data Lake Engineering | Goldman Sachs & Co.


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