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https://issues.apache.org/jira/browse/FLINK-2837?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15024351#comment-15024351
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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_r45726840
--- Diff:
flink-contrib/flink-storm/src/main/java/org/apache/flink/storm/wrappers/BoltWrapper.java
---
@@ -75,11 +78,13 @@
*
* @param bolt
* The Storm {@link IRichBolt bolt} to be used.
+ * @param componentId
+ * @param streamId
* @throws IllegalArgumentException
* If the number of declared output attributes is not with
range [0;25].
*/
- public BoltWrapper(final IRichBolt bolt) throws
IllegalArgumentException {
- this(bolt, null, (Collection<String>) null);
+ public BoltWrapper(final IRichBolt bolt, String componentId, String
streamId) throws IllegalArgumentException {
+ this(bolt, componentId, streamId, null, (Collection<String>)
null);
--- End diff --
This makes the interface quite hard to use and should not be necessary. The
`TopologyContext` created in `open()` contains this information.
> 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.
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