FusionInsight Managerinterface, when receivedKafkaInsufficient disk capacity alarm, and the alarm's When the cause has been ruled out for the hard disk hardware failure, the system administrator needs to consider expanding the capacity to solve this problem.

Fusioninsight HDmedium, applicablestreamingSubmit by command lineexample.jarmiddle om.huawei.example.wordcounttask, task name iswcTest, is the following execution command correct?

existSpark, assuminglinesIs anDStreamobject,filterStatements can be filtered out80%data for the following two The correct statement is:
X: lines.filter(...).groupByKey(...)
Y: lines.groupByKey(...).filter(...)

writingMapReduceWhich two interfaces are usually required to be implemented by developers?

when aMapRcdueWhen the application is executed, which of the following actions ismapoccurs before the stage of?