[jira] [Assigned] (SAMZA-1277) Add a static merge() operator that takes all streams to merge as input

["Prateek Maheshwari (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/SAMZA-1277?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Prateek Maheshwari reassigned SAMZA-1277:
-----------------------------------------

    Assignee: Prateek Maheshwari

> Add a static merge() operator that takes all streams to merge as input
> ----------------------------------------------------------------------
>
>                 Key: SAMZA-1277
>                 URL: https://issues.apache.org/jira/browse/SAMZA-1277
>             Project: Samza
>          Issue Type: Bug
>            Reporter: Jake Maes
>            Assignee: Prateek Maheshwari
>             Fix For: 0.13.0
>
>
> The current design forces users to do stuff like this (I can provide more than a few examples already)
> {noFormat}
> List<MessageStream<GenericRecord>> xTrackingMonitoringEvents = new ArrayList<>();
> // ... populate the list
>  MessageStream<GenericRecord>  initialInputStream =
>         xTrackingMonitoringEvents.remove(xTrackingMonitoringEvents.size() - 1);
>     Collection<MessageStream<? extends GenericRecord>> otherStreams =
>         (Collection<MessageStream<? extends GenericRecord>>) (Object) xTrackingMonitoringEvents;
>     initialInputStream
>         .merge(otherStreams)
> // .do other stuff
> {noFormat}
> ^ eww. Removing one item from the array so it can be used as the initial message stream seems to cause pain.
> Lets see if we can come up with a cleaner way to do merge()



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