What are the languages supported by apache spark and which is the most popular one?

1700

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Is there any benefit of learning mapreduce if spark is better than mapreduce?

1809

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How can apache spark be used alongside hadoop?

1807

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Define partitions in apache spark.

2176

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Is there an api for implementing graphs in spark?

2032

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Explain accumulators in apache spark.

2072

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What file systems does spark support?

1781

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What is a dstream in apache spark?

2029

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Explain the concept of resilient distributed dataset (rdd).

2048

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What do you understand by schemardd in apache spark rdd?

2275

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What are roles in cqlsh?

76

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what is gossip protocol?

87

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What are snapshots and how do you create one in cassandra?

58

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What is the use of coordinator node in read?

89

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Explain the different logging levels in cassandra.

87

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