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[BAHIR-183]Using HDFS for saving message for mqtt source. #78
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yanlin-Lynn
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@lukasz-antoniak @lresende . Sorry to bother you, I have done some wrong operations in the old patch, and I have closed it. Please check it in this patch. Thansk. |
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Currently in spark-sql-streaming-mqtt, the received mqtt message is saved in a local file by driver, this will have the risks of losing data for cluster mode when application master failover occurs. So add a hdfs-based mqtt source to solve this problem.