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ASF GitHub Bot commented on FLINK-2837: --------------------------------------- Github user mjsax commented on a diff in the pull request: https://github.com/apache/flink/pull/1398#discussion_r46035298 --- Diff: flink-contrib/flink-storm/src/main/java/org/apache/flink/storm/wrappers/WrapperSetupHelper.java --- @@ -224,7 +224,7 @@ static synchronized TopologyContext createTopologyContext( * OUTPUT: A map from all component IDs to there output streams and output fields. * * @return A unique task ID if the currently processed Spout or Bolt ({@code componentId}) is equal to the current - * Flink operator ({@link operatorName}) -- {@code null} otherwise. + * Flink operator ({@param operatorName}) -- {@code null} otherwise. --- End diff -- I guess `@link` is wrong, but does `@param` work? Maybe `@code` would be correct? But I am not sure. > FlinkTopologyBuilder cannot handle multiple input streams > --------------------------------------------------------- > > Key: FLINK-2837 > URL: https://issues.apache.org/jira/browse/FLINK-2837 > Project: Flink > Issue Type: Bug > Components: Storm Compatibility > Reporter: Matthias J. Sax > Assignee: Maximilian Michels > > FlinkTopologyBuilder cannot handle multiple input streams correctly. Instead > of union the incoming streams, it replicates the consuming bolt and each > (logical) instance processes one of the input streams. > For example: > {noformat} > final FlinkTopologyBuilder builder = new FlinkTopologyBuilder(); > builder.setSpout(spoutId1, new FiniteRandomSpout(0, 10)); > builder.setSpout(spoutId2, new FiniteRandomSpout(1, 8)); > builder.setSpout(spoutId3, new FiniteRandomSpout(2, 13)); > builder.setBolt(boltId, new MergerBolt()) > .shuffleGrouping(spoutId1) > .shuffleGrouping(spoutId2) > .shuffleGrouping(spoutId3); > builder.setBolt("sink", new BoltPrintSink(new SimpleOutputFormatter())) > .shuffleGrouping(boltId); > {noformat} > will only print the data from a single source instead of all sources. -- This message was sent by Atlassian JIRA (v6.3.4#6332)