Github user tdas commented on the pull request:
https://github.com/apache/spark/pull/2735#issuecomment-62442543
@comcmipi Yes, in the current version, if you quit the streaming
application (aka driver) quits, then the data received by receivers but not yet
processed gets lost. Thats why we have add an experimental feature (already
added to master, to be released with Spark 1.2) where the received data will be
stored to a log file in HDFS, so that no data is lost.
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