[
https://issues.apache.org/jira/browse/FLINK-4224?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Aljoscha Krettek closed FLINK-4224.
-----------------------------------
Resolution: Not A Problem
> Exception after successful execution os job submitted through the web
> interface.
> --------------------------------------------------------------------------------
>
> Key: FLINK-4224
> URL: https://issues.apache.org/jira/browse/FLINK-4224
> Project: Flink
> Issue Type: Bug
> Affects Versions: 1.1.0
> Reporter: Kostas Kloudas
> Assignee: Aljoscha Krettek
>
> When submitting the job below through the web interface to a local flink
> cluster:
> {code}
> public static void main(String[] args) throws Exception {
> StreamExecutionEnvironment env =
> SreamExecutionEnvironment.getExecutionEnvironment();
> TextInputFormat inputFormat =
> new TextInputFormat(new
> Path("file:///YOUR_TEXT_FILE"));
> DataStream<Tuple2<String, Integer>> input = env.
>
> readFile(inputFormat,inputFormat.getFilePath().toString()).
> flatMap(new Tokenizer()).
> keyBy(0).
> sum(1);
> input.print();
> env.execute("WebClient Testing Example.");
> }
>
> public static final class Tokenizer implements
> FlatMapFunction<String, Tuple2<String, Integer>> {
> private static final long serialVersionUID = 1L;
> @Override
> public void flatMap(String value, Collector<Tuple2<String,
> Integer>> out)
> throws Exception {
> // normalize and split the line
> String[] tokens = value.toLowerCase().split("\\W+");
> // emit the pairs
> for (String token : tokens) {
> if (token.length() > 0) {
> out.collect(new Tuple2<>(token, 1));
> }
> }
> }
> }
> {code}
> The job succeeds, but at the logs there is a NPE:
> {code} 2016-07-16 16:56:18,197 WARN
> org.apache.flink.runtime.webmonitor.RuntimeMonitorHandler -
> Error while handling request java.lang.RuntimeException:
> Couldn't deserialize ExecutionConfig.
> ...
> Caused by: java.lang.NullPointerException at
> org.apache.flink.util.SerializedValue.deserializeValue(SerializedValue.java:55)
> at
> org.apache.flink.runtime.webmonitor.handlers.JobConfigHandler.handleRequest(JobConfigHandler.java:50)
> {code}
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