[jira] [Created] (FLINK-7430) ContinuousFileReaderOperator swallows exceptions

["Peter Ertl (JIRA)" <ji...@apache.org>]

Peter Ertl created FLINK-7430:
---------------------------------

             Summary: ContinuousFileReaderOperator swallows exceptions
                 Key: FLINK-7430
                 URL: https://issues.apache.org/jira/browse/FLINK-7430
             Project: Flink
          Issue Type: Bug
          Components: DataStream API
    Affects Versions: 1.3.2
            Reporter: Peter Ertl


The class ContinuousFileReaderOperator is swallowing exception as the following example demonstrated:

package org.apache.flink.streaming.examples;

import java.io.File;
import java.io.IOException;

import org.apache.flink.api.common.io.OutputFormat;
import org.apache.flink.configuration.Configuration;
import org.apache.flink.streaming.api.environment.StreamExecutionEnvironment;

public class FormatExceptionSwallowed {
	public static void main(String[] args) throws Exception {
		final StreamExecutionEnvironment env = StreamExecutionEnvironment.getExecutionEnvironment();
		File bla = File.createTempFile("foo", "baz");
		env.readTextFile(bla.getCanonicalPath())
			.writeUsingOutputFormat(new OutputFormat<String>() {
				@Override
				public void configure(final Configuration parameters) {
				}
				@Override
				public void open(final int taskNumber, final int numTasks) throws IOException {
				}
				@Override
				public void writeRecord(final String record) throws IOException {
					throw new IllegalArgumentException("bla");
				}
				@Override
				public void close() throws IOException {
				}
			});
		env.execute("go");
		
		// JOB TERMINATES WITH NO EXCEPTION / ERROR whatsoever ... 
	}
}




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