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Posted to issues@ignite.apache.org by "Ilya Kasnacheev (JIRA)" <ji...@apache.org> on 2018/03/15 10:25:00 UTC
[jira] [Created] (IGNITE-7963) Futures from DataStreamer.addData()
fail to complete if DataStreamer.flush() is never called
Ilya Kasnacheev created IGNITE-7963:
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Summary: 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: Task
Components: cache
Affects Versions: 2.3
Reporter: Ilya Kasnacheev
Assignee: Ilya Kasnacheev
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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