Spotlight InfoWorld Technology of the Year DataStax Enterprise has been named a 2019 InfoWorld Technology of the Year Read Now Overview In Cassandra 0.6, we created a ColumnFamilyInputFormat, allowing you to read data stored in Cassandra from a Hadoop mapreduce job. However, you had to write the output from these jobs to a local file or HDFS, or manually connect to Cassandra in your reducer to sto
Deprecation warning This post covers the obsolete Cassandra 0.7. Modern Cassandra manipulates indexes using CQL. Overview In Cassandra, indexes on column values are called "secondary indexes," to distinguish them from the index on the row key that all ColumnFamilies have. Secondary indexes allow querying by value and can be built in the background automatically without blocking reads or writes. Th
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