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https://issues.apache.org/jira/browse/IGNITE-7963?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16475747#comment-16475747
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Igor Seliverstov commented on IGNITE-7963:
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[~ilyak], I think something like "Note: the data may be never sent and the
future may be never completed until whether flush() or close() method is called
on the datastreamer" is better.
> Futures from DataStreamer.addData() fail to complete if DataStreamer.flush()
> is never called
> --------------------------------------------------------------------------------------------
>
> Key: IGNITE-7963
> URL: https://issues.apache.org/jira/browse/IGNITE-7963
> Project: Ignite
> Issue Type: Improvement
> Components: cache
> Affects Versions: 2.3
> Reporter: Ilya Kasnacheev
> Assignee: Ilya Kasnacheev
> Priority: Minor
> Labels: usability
>
> DataStreamer.addData() will return futures for operation.
> Thus the naive use of DataStreamer will look like this:
> {code}
> for (Data d : data)
> futs.add(dataStreamer.addData(d));
> for (IgniteFuture f : futs)
> f.get();
> dataStreamer.close();
> {code}
> However, this does not work. Unless flush is called (manual or otherwisE),
> futures are not being processed. This code will likely hang on f.get().
> The solution, IMHO, is to introduce dataStreamer-flushing clause in f.get().
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