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high availability - Any command to get active namenode for nameservice in hadoop?

The command: hdfs haadmin -getServiceState machine-98 Works only if you know the machine name. Is there any ... of the active namenode? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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high bits of long multiplication in Java?

Is there any way to get the high half of the multiplication of two longs in Java? I.e. the part that vanishes due ... in Java, and if so, how? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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