HDFSThere is a file in the cluster and directorytext.txt, which of the following commands can find theDatNodeFestival point information?

• A.hdfs fsck /test.txt-files
• B.hdfs fsck /test.txt-blocks
• C.hdfs fsck /text.txt-locations
• D.hdfs fsck /test.txt-list-corruptfileblocks

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aboutRedisFeatures, the following description is correct?

• A.Support data persistence
• B.Rich data structures
• C.low latency
• D.supportSQLquery interface

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Spark StreamingAs a micro-batch stream processing engine, it converts the data of each time slice into aRDDmiddle A partition is calculated.

• A.False
• B.True

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existSparkmiddle,SparkSQLis an independent module that does not depend onSparkCorefinish independentlySQLSentence parsing, optimization operations such as transformation and execution.

• A.False
• B.True

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Hadoopin the systemYARNassigned toContainerThe memory size, which can be passed through the parameter yarn.app.mapreduce.am.resource.mb(yarn.nodemanager.resource.memory-mb) to set.
( )

• A.False
• B.True

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