如何使用Apache FLUME将数据写入HA Hadoop QJM？

How flume will identify active namenode so that data will be written to HDFS? Without High Availability Hadoop we will have namenode ip configured in flume.conf so that the data will be easily directed to HDFS. Whereas in our case, Flume should identify active and standby namenodes and thereby data should be directed to active one. How flume will identify active namenode so that