Just to update that the messages of type "The operator name DataSource () exceeded the 80 characters length limit and was truncated" occur for other operations than print statements.

I am still new with Flink and am specifically interested in print/logging statements. Using Wordcounter in batch with input and output works well. But cannot see print entries anywhere...

So I took a different approach and submitted the following simpler job using logging instead of printing to console:

public class SimpleExample {
        private static final Logger LOG = LoggerFactory.getLogger(ParallelMLExample.class);
        public static void main(String[] args) throws Exception {
                final ExecutionEnvironment env;
                env = ExecutionEnvironment.getExecutionEnvironment();
                DataSet<Integer> amounts = env.fromElements(1, 29, 40, 50);
                LOG.info("########## BEFORE UPDATEMODEL ##########");
                List<Integer> collect = amounts.filter(a -> a > 30).reduce((integer, t1) -> integer + t1).collect();
                LOG.info("########## AFTER UPDATEMODEL ##########");
                LOG.info(collect.get(0).toString());
        }
}

The logs only show the first statement (BEFORE) - why?! I am failing to understand how to use either print or logging reliably...

jobmanager_1   | Starting Job Manager
jobmanager_1   | config file: 
jobmanager_1   | jobmanager.rpc.address: jobmanager
jobmanager_1   | jobmanager.rpc.port: 6123
jobmanager_1   | jobmanager.heap.mb: 1024
jobmanager_1   | taskmanager.heap.mb: 1024
jobmanager_1   | taskmanager.numberOfTaskSlots: 1
jobmanager_1   | taskmanager.memory.preallocate: false
jobmanager_1   | parallelism.default: 1
jobmanager_1   | web.port: 8081
jobmanager_1   | blob.server.port: 6124
jobmanager_1   | query.server.port: 6125
jobmanager_1   | Starting jobmanager as a console application on host b66ca9ea48e2.
taskmanager_1  | Starting Task Manager
taskmanager_1  | config file: 
taskmanager_1  | jobmanager.rpc.address: jobmanager
taskmanager_1  | jobmanager.rpc.port: 6123
taskmanager_1  | jobmanager.heap.mb: 1024
taskmanager_1  | taskmanager.heap.mb: 1024
taskmanager_1  | taskmanager.numberOfTaskSlots: 4
taskmanager_1  | taskmanager.memory.preallocate: false
taskmanager_1  | parallelism.default: 1
taskmanager_1  | web.port: 8081
taskmanager_1  | blob.server.port: 6124
taskmanager_1  | query.server.port: 6125
taskmanager_1  | Starting taskmanager as a console application on host 5f6223cd3e71.
jobmanager_1   | Slf4jLogger started
taskmanager_1  | Slf4jLogger started
jobmanager_1   | ########## BEFORE UPDATEMODEL ##########
taskmanager_1  | The operator name DataSource (at main(SimpleExample.java:30) (org.apache.flink.api.java.io.CollectionInputFormat)) exceeded the 80 characters length limit and was truncated.

Any advice?


On 04/22/2018 10:33 AM, JP de Vooght wrote:

Thank you Ted!

I still get the message below...

taskmanager_1  | The operator name DataSource (at
getDefaultTextLineDataSet(WordCountData.java:70 (org.apache.flink.api.java.io.CollectionInputFormat)) exceeded the 80 characters length limit and was truncated.

The corresponding line 70 in Wordcount.java is

System.out.println("Executing WordCount example with default input data set.");

I got the docker image from https://github.com/docker-flink/docker-flink and still get this message even with all defaults.


On 04/22/2018 12:39 AM, Ted Yu wrote:
bq. To enable Queryable State, please move the flink-queryable-state-runtime jar from the opt to the lib folder.

Have you noticed the above and taken corresponding action ?

Thanks

On Sat, Apr 21, 2018 at 3:15 PM, JP de Vooght <jp@vooght.de> wrote:
Hello,

When I submit a WordCount job from the examples, without any parameter,
to a standalone cluster running on Docker, I cannot see the
System.out.println() message. Instead I notice the
org.apache.flink.metrics.MetricGroup entry below (last)

jobmanager_1   | Starting Job Manager
jobmanager_1   | config file:
jobmanager_1   | jobmanager.rpc.address: jobmanager
jobmanager_1   | jobmanager.rpc.port: 6123
jobmanager_1   | jobmanager.heap.mb: 1024
jobmanager_1   | taskmanager.heap.mb: 1024
jobmanager_1   | taskmanager.numberOfTaskSlots: 1
jobmanager_1   | taskmanager.memory.preallocate: false
jobmanager_1   | parallelism.default: 1
jobmanager_1   | web.port: 8081
jobmanager_1   | blob.server.port: 6124
jobmanager_1   | query.server.port: 6125
jobmanager_1   | Starting jobmanager as a console application on host
400baa8ff371.
taskmanager_1  | Starting Task Manager
taskmanager_1  | config file:
taskmanager_1  | jobmanager.rpc.address: jobmanager
taskmanager_1  | jobmanager.rpc.port: 6123
taskmanager_1  | jobmanager.heap.mb: 1024
taskmanager_1  | taskmanager.heap.mb: 1024
taskmanager_1  | taskmanager.numberOfTaskSlots: 4
taskmanager_1  | taskmanager.memory.preallocate: false
taskmanager_1  | parallelism.default: 1
taskmanager_1  | web.port: 8081
taskmanager_1  | blob.server.port: 6124
taskmanager_1  | query.server.port: 6125
taskmanager_1  | Starting taskmanager as a console application on host
531ef6c27264.
jobmanager_1   | Slf4jLogger started
taskmanager_1  | Slf4jLogger started
taskmanager_1  | Could not load Queryable State Client Proxy. Probable
reason: flink-queryable-state-runtime is not in the classpath. To enable
Queryable State, please move the flink-queryable-state-runtime jar from
the opt to the lib folder.
taskmanager_1  | Could not load Queryable State Server. Probable reason:
flink-queryable-state-runtime is not in the classpath. To enable
Queryable State, please move the flink-queryable-state-runtime jar from
the opt to the lib folder.
taskmanager_1  | The operator name DataSource (at
getDefaultTextLineDataSet(WordCountData.java:70)
(org.apache.flink.api.java.io.CollectionInputFormat)) exceeded the 80
characters length limit and was truncated.

I am not sure why this happens. I am using the latest Docker image with
1.4.2 and the corresponding JAR from the 1.4.2 release of the examples.

TIA

JP