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ASF GitHub Bot commented on FLINK-1870: --------------------------------------- Github user mjsax commented on the pull request: https://github.com/apache/flink/pull/1483#issuecomment-171944496 With embedded mode, I mean to use a spout/bolt within a regular Flink streaming program. For this, you could even have a "plain/raw" input stream (eg, `DataStream<String>`) or a POJO. Both can be translated into StormTuple (which is only used for input tuples). Output tuples are of type `Values` and also translated back to `TupleX` type. Extending the tuples with an additional field would work, too. But I did not like this, because is increases the data that need to be shipped over the network. For embedded mode, we would need to think of a nice "work around" for "plain/raw" and POJO input streams -- but this should not be a problem. As there are no globally unique task-ids anyway in embedded mode, it might be even ok not to support this feature... I personally do not see it as a big (very dangerous) problem in exposing "input channel index" to the operators. But if you are strictly against it, I will go with the "additional field" approach to provide this information. > Reintroduce Indexed reader functionality to streaming > ----------------------------------------------------- > > Key: FLINK-1870 > URL: https://issues.apache.org/jira/browse/FLINK-1870 > Project: Flink > Issue Type: Task > Components: Streaming > Reporter: Gyula Fora > Assignee: Matthias J. Sax > Priority: Minor > > The Indexed record reader classes (IndexedReaderIterator, > IndexedMutableReader) were introduced to allow the streaming operators to > access the index of the last read channel from the input gate. This was a > necessary step toward future input sorting operators. > Unfortunately this untested feature was patched away by the following commit: > https://github.com/apache/flink/commit/5232c56b13b7e13e2cf10dbe818c221f5557426d > At some point we need to reimplement these features with proper tests. -- This message was sent by Atlassian JIRA (v6.3.4#6332)