I am trying to run a Java flink streaming job (basic word count with Kafka)
locally. But I am stuck with the following error. Any ideas on the cause of
the error?
Job execution switched to status RUNNING.
10/29/2015 11:15:54 Custom Source -> Flat Map -> Map(1/8) switched to
SCHEDULED
10/29/2015 11:15:54 Custom Source -> Flat Map -> Map(1/8) switched to
DEPLOYING
10/29/2015 11:15:54 Custom Source -> Flat Map -> Map(2/8) switched to
SCHEDULED
10/29/2015 11:15:54 Custom Source -> Flat Map -> Map(2/8) switched to
DEPLOYING
10/29/2015 11:15:54 Custom Source -> Flat Map -> Map(3/8) switched to
SCHEDULED
10/29/2015 11:15:54 Custom Source -> Flat Map -> Map(3/8) switched to
DEPLOYING
10/29/2015 11:15:54 Custom Source -> Flat Map -> Map(4/8) switched to
SCHEDULED
10/29/2015 11:15:54 Custom Source -> Flat Map -> Map(4/8) switched to
DEPLOYING
10/29/2015 11:15:54 Custom Source -> Flat Map -> Map(5/8) switched to
SCHEDULED
10/29/2015 11:15:54 Custom Source -> Flat Map -> Map(5/8) switched to
DEPLOYING
10/29/2015 11:15:54 Custom Source -> Flat Map -> Map(6/8) switched to
SCHEDULED
10/29/2015 11:15:54 Custom Source -> Flat Map -> Map(6/8) switched to
DEPLOYING
10/29/2015 11:15:54 Custom Source -> Flat Map -> Map(7/8) switched to
SCHEDULED
10/29/2015 11:15:54 Custom Source -> Flat Map -> Map(7/8) switched to
DEPLOYING
10/29/2015 11:15:54 Custom Source -> Flat Map -> Map(8/8) switched to
SCHEDULED
10/29/2015 11:15:54 Custom Source -> Flat Map -> Map(8/8) switched to
DEPLOYING
10/29/2015 11:15:54 Grouped Aggregation -> (Map -> Stream Sink, Stream
Sink)(1/8) switched to SCHEDULED
10/29/2015 11:15:54 Grouped Aggregation -> (Map -> Stream Sink, Stream
Sink)(1/8) switched to DEPLOYING
10/29/2015 11:15:54 Grouped Aggregation -> (Map -> Stream Sink, Stream
Sink)(2/8) switched to SCHEDULED
10/29/2015 11:15:54 Grouped Aggregation -> (Map -> Stream Sink, Stream
Sink)(2/8) switched to DEPLOYING
10/29/2015 11:15:54 Grouped Aggregation -> (Map -> Stream Sink, Stream
Sink)(3/8) switched to SCHEDULED
10/29/2015 11:15:54 Grouped Aggregation -> (Map -> Stream Sink, Stream
Sink)(3/8) switched to DEPLOYING
10/29/2015 11:15:54 Grouped Aggregation -> (Map -> Stream Sink, Stream
Sink)(4/8) switched to SCHEDULED
10/29/2015 11:15:54 Grouped Aggregation -> (Map -> Stream Sink, Stream
Sink)(4/8) switched to DEPLOYING
10/29/2015 11:15:54 Grouped Aggregation -> (Map -> Stream Sink, Stream
Sink)(5/8) switched to SCHEDULED
10/29/2015 11:15:54 Grouped Aggregation -> (Map -> Stream Sink, Stream
Sink)(5/8) switched to DEPLOYING
10/29/2015 11:15:54 Grouped Aggregation -> (Map -> Stream Sink, Stream
Sink)(6/8) switched to SCHEDULED
10/29/2015 11:15:54 Grouped Aggregation -> (Map -> Stream Sink, Stream
Sink)(6/8) switched to DEPLOYING
10/29/2015 11:15:54 Grouped Aggregation -> (Map -> Stream Sink, Stream
Sink)(7/8) switched to SCHEDULED
10/29/2015 11:15:54 Grouped Aggregation -> (Map -> Stream Sink, Stream
Sink)(7/8) switched to DEPLOYING
10/29/2015 11:15:54 Grouped Aggregation -> (Map -> Stream Sink, Stream
Sink)(8/8) switched to SCHEDULED
10/29/2015 11:15:54 Grouped Aggregation -> (Map -> Stream Sink, Stream
Sink)(8/8) switched to DEPLOYING
10/29/2015 11:15:54 Custom Source -> Flat Map -> Map(5/8) switched to
FAILED
java.lang.Exception: Could not load the task's invokable class.
at
org.apache.flink.runtime.taskmanager.Task.loadAndInstantiateInvokable(Task.java:696)
at org.apache.flink.runtime.taskmanager.Task.run(Task.java:450)
at java.lang.Thread.run(Thread.java:745)
Caused by: java.lang.ClassCastException: class
org.apache.flink.streaming.runtime.tasks.SourceStreamTask
at java.lang.Class.asSubclass(Class.java:3404)
at
org.apache.flink.runtime.taskmanager.Task.loadAndInstantiateInvokable(Task.java:693)
... 2 more
10/29/2015 11:15:54 Custom Source -> Flat Map -> Map(2/8) switched to
FAILED
java.lang.Exception: Could not load the task's invokable class.
at
org.apache.flink.runtime.taskmanager.Task.loadAndInstantiateInvokable(Task.java:696)
at org.apache.flink.runtime.taskmanager.Task.run(Task.java:450)
at java.lang.Thread.run(Thread.java:745)
Caused by: java.lang.ClassCastException: class
org.apache.flink.streaming.runtime.tasks.SourceStreamTask
at java.lang.Class.asSubclass(Class.java:3404)
at
org.apache.flink.runtime.taskmanager.Task.loadAndInstantiateInvokable(Task.java:693)
... 2 more
10/29/2015 11:15:54 Job execution switched to status FAILING.
10/29/2015 11:15:54 Grouped Aggregation -> (Map -> Stream Sink, Stream
Sink)(1/8) switched to FAILED
java.lang.Exception: Could not load the task's invokable class.
at
org.apache.flink.runtime.taskmanager.Task.loadAndInstantiateInvokable(Task.java:696)
at org.apache.flink.runtime.taskmanager.Task.run(Task.java:450)
at java.lang.Thread.run(Thread.java:745)
Caused by: java.lang.ClassCastException: class
org.apache.flink.streaming.runtime.tasks.OneInputStreamTask
at java.lang.Class.asSubclass(Class.java:3404)
at
org.apache.flink.runtime.taskmanager.Task.loadAndInstantiateInvokable(Task.java:693)
... 2 more
--
View this message in context:
http://apache-flink-user-mailing-list-archive.2336050.n4.nabble.com/Could-not-load-the-task-s-invokable-class-tp3336.html
Sent from the Apache Flink User Mailing List archive. mailing list archive at
Nabble.com.
