Top "Cassandra" questions

get Year from java.util.Date

I have a date column in a Cassandra column family. When I retrieve data from this CF using datastax java …

java cassandra deprecated datastax java.util.date

"no viable alternative at input" error when querying cassndra table

I have a table in Cassandra like this: CREATE TABLE vroc.sensor_data ( dpnode text, year int, month int, day …

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JUnit Testing Cassandra with embedded server

What is the best approach to write unit tests for code that persists data to nosql data store, in our …

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Check a rows TTL in cassandra?

I have a table/column family which I am inserting rows that expire after a certain amount of time. Is …

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Why was Cassandra written in Java?

Question about Cassandra Why the hell on earth would anybody write a database ENGINE in Java ? I can understand why …

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Does an UPDATE become an implied INSERT

For Cassandra, do UPDATEs become an implied INSERT if the selected row does not exist? That is, if I say …

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COPY cassandra table from csv file

I'm setting up a demo landscape for Cassandra, Apache Spark and Flume on my Mac (Mac OS X Yosemite with …

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How to rename table in Cassandra CQL3

I'm trying to rename table created via CQLSH. E.g. rename table "AAA" to "BBB". Can't find any command to …

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Efficient way to store a JSON string in a Cassandra column?

Cassandra newbie question. I'm collecting some data from a social networking site using REST calls. So I end up with …

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How to switch Keyspace in Cassandra using CQL?

I used USE billKeyspace; to enter a keyspace and start using it. Now I want to exit this keyspace and …

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