.set("spark.streaming.receiver.writeAheadLog.enable", "true") //
To ensure zero data loss, enable the Write Ahead Logs (introduced in Spark 1.2). This synchronously saves all the received Kafka data into write ahead logs on a distributed file system (e.g HDFS), so that all the data can be recovered on failure. See Deploying section in the streaming programming guide for more details on Write Ahead Logs.
Spark-Streaming Spark-Streaming，思维导图
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To ensure zero data loss, enable the Write Ahead Logs (in...
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