Apache Cassandra Interview Questions part 1

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Apache CassandraFollowing are the list of frequently asked questions in Apache Cassandra. You know , Apache Cassandra gaining popularity in fast pace so I tried to list down few basic questions in Apache Cassandra for interview.

Q. How to stop Cassandra on windows?

Ans: On Windows installations, you can find the JVM process and kill it using the Task Manager.

Q. How to stop cassandra on Unix (linux or mac)?

Ans:
when installed as service:

service cassandra stop

if not installed as services, do following

user=`whoami`
pgrep -u $user -f cassandra | xargs kill -9

Q. By default what is name of Cassandra Cluster?

Ans. by default name is “Test Cluster” , preferable to change this in production. You can view this default name, when run cqlsh on command prompt, something similar as follows:

$ bin/cqlsh
Connected to Test Cluster at 127.0.0.1:9042.
[cqlsh 5.0.1 | Cassandra 3.0.0 | CQL spec 3.3.1 | Native protocol v4]
Use HELP for help.
cqlsh>

or

cqlsh> DESCRIBE CLUSTER;
Cluster: Test Cluster
Partitioner: Murmur3Partitioner
...

Q. How to connect from one node to another via cqlsh?

$ bin/cqlsh 10.0.8.10 9042

Q. How to see complete list of the command-line options supported by cqlsh?

Ans: type the command

cqlsh -help.

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