Top Questions

1. Should I denormalize a Cassandra table with 1B rows according to the queries being used?
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2. What happens with Spark partitions when using Spark-Cassandra-Connector
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3. Spark-Cassandra: repartitionByCassandraReplica or converting dataset to JavaRDD and back do not maintain number of partitions?
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4. Spark Java - repartitionByCassandraReplica - recommended number of partition keys and partitionsPerHost
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5. Spark standalone application implementes PCA, then hangs for 10-12 minutes and only then removes RDD from memory
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