Streaming bucketing end-to-end test NoClassDefFoundError

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Running 'Streaming bucketing end-to-end test'
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TEST_DATA_DIR: /home/travis/build/apache/flink/flink-end-to-end-tests/test-scripts/temp-test-directory-05739414867
Flink dist directory: /home/travis/build/apache/flink/flink-dist/target/flink-1.11-SNAPSHOT-bin/flink-1.11-SNAPSHOT
Setting up SSL with: internal JDK dynamic
Using SAN dns:travis-job-b9e26d64-0a62-42c7-9802-6c49defb4ad7,ip:10.20.0.145,ip:172.17.0.1
Certificate was added to keystore
Certificate was added to keystore
Certificate reply was installed in keystore
MAC verified OK
Setting up SSL with: rest JDK dynamic
Using SAN dns:travis-job-b9e26d64-0a62-42c7-9802-6c49defb4ad7,ip:10.20.0.145,ip:172.17.0.1
Certificate was added to keystore
Certificate was added to keystore
Certificate reply was installed in keystore
MAC verified OK
Mutual ssl auth: false
Starting cluster.
Starting standalonesession daemon on host travis-job-b9e26d64-0a62-42c7-9802-6c49defb4ad7.
Starting taskexecutor daemon on host travis-job-b9e26d64-0a62-42c7-9802-6c49defb4ad7.
Waiting for Dispatcher REST endpoint to come up...
Waiting for Dispatcher REST endpoint to come up...
Waiting for Dispatcher REST endpoint to come up...
Waiting for Dispatcher REST endpoint to come up...
Waiting for Dispatcher REST endpoint to come up...
Dispatcher REST endpoint is up.
[INFO] 1 instance(s) of taskexecutor are already running on travis-job-b9e26d64-0a62-42c7-9802-6c49defb4ad7.
Starting taskexecutor daemon on host travis-job-b9e26d64-0a62-42c7-9802-6c49defb4ad7.
[INFO] 2 instance(s) of taskexecutor are already running on travis-job-b9e26d64-0a62-42c7-9802-6c49defb4ad7.
Starting taskexecutor daemon on host travis-job-b9e26d64-0a62-42c7-9802-6c49defb4ad7.
[INFO] 3 instance(s) of taskexecutor are already running on travis-job-b9e26d64-0a62-42c7-9802-6c49defb4ad7.
Starting taskexecutor daemon on host travis-job-b9e26d64-0a62-42c7-9802-6c49defb4ad7.
Number of running task managers 1 is not yet 4.
Number of running task managers 2 is not yet 4.
Number of running task managers has reached 4.
java.lang.NoClassDefFoundError: org/apache/hadoop/conf/Configuration
	at java.lang.Class.getDeclaredMethods0(Native Method)
	at java.lang.Class.privateGetDeclaredMethods(Class.java:2701)
	at java.lang.Class.getDeclaredMethod(Class.java:2128)
	at org.apache.flink.api.java.ClosureCleaner.usesCustomSerialization(ClosureCleaner.java:164)
	at org.apache.flink.api.java.ClosureCleaner.clean(ClosureCleaner.java:89)
	at org.apache.flink.api.java.ClosureCleaner.clean(ClosureCleaner.java:71)
	at org.apache.flink.streaming.api.environment.StreamExecutionEnvironment.clean(StreamExecutionEnvironment.java:1820)
	at org.apache.flink.streaming.api.datastream.DataStream.clean(DataStream.java:188)
	at org.apache.flink.streaming.api.datastream.DataStream.addSink(DataStream.java:1328)
	at org.apache.flink.streaming.tests.BucketingSinkTestProgram.main(BucketingSinkTestProgram.java:84)
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.lang.reflect.Method.invoke(Method.java:498)
	at org.apache.flink.client.program.PackagedProgram.callMainMethod(PackagedProgram.java:321)
	at org.apache.flink.client.program.PackagedProgram.invokeInteractiveModeForExecution(PackagedProgram.java:205)
	at org.apache.flink.client.ClientUtils.executeProgram(ClientUtils.java:138)
	at org.apache.flink.client.cli.CliFrontend.executeProgram(CliFrontend.java:664)
	at org.apache.flink.client.cli.CliFrontend.run(CliFrontend.java:213)
	at org.apache.flink.client.cli.CliFrontend.parseParameters(CliFrontend.java:895)
	at org.apache.flink.client.cli.CliFrontend.lambda$main$10(CliFrontend.java:968)
	at org.apache.flink.runtime.security.contexts.NoOpSecurityContext.runSecured(NoOpSecurityContext.java:30)
	at org.apache.flink.client.cli.CliFrontend.main(CliFrontend.java:968)
Caused by: java.lang.ClassNotFoundException: org.apache.hadoop.conf.Configuration
	at java.net.URLClassLoader.findClass(URLClassLoader.java:382)
	at java.lang.ClassLoader.loadClass(ClassLoader.java:419)
	at org.apache.flink.util.ChildFirstClassLoader.loadClass(ChildFirstClassLoader.java:60)
	at java.lang.ClassLoader.loadClass(ClassLoader.java:352)
	... 23 more
Job () is running.
Waiting for job () to have at least 5 completed checkpoints ...
No output has been received in the last 10m0s, this potentially indicates a stalled build or something wrong with the build itself.
Check the details on how to adjust your build configuration on: https://docs.travis-ci.com/user/common-build-problems/#build-times-out-because-no-output-was-received
The build has been terminated