[CASSANDRA-4273] Write auxiliary info to the system's error stream and not to the std output.

• Type: Improvement
• Status: Resolved
• Priority: Low
• Resolution: Invalid
• Component/s: Legacy/CQL, Legacy/Tools
• Labels: cassandra-cli

Environment

Ubuntu 10.04 LTS with Sun Java 1.6.0.26
Using Cassandra without JNA

• Assignee: Unassigned
• Reporter: Pantelis Sopasakis
• Created: 23/May/12 08:06
• Updated: 16/Apr/19 09:32
• Resolved: 23/May/12 14:45

Description

When executing a Cassandra script from the terminal then all output is written to the standard output stream of the system. For example if we create a file called my_script with the following commands:

use MyKeyspace;
show schema;

and we execute it as:

cassandra-cli < my_script > my.scm

then the output file my.scm will also contain lines like:

Connected to: "Test Cluster" on 127.0.0.1/9160
Welcome to Cassandra CLI version 1.2.0-SNAPSHOT

Type 'help;' or '?' for help.
Type 'quit;' or 'exit;' to quit.

or

Authenticated to keyspace: MyKeyspace

Would be good to write such information to the system error stream so that one would be able to do:

cassandra-cli < my_script > my.scm 2> /dev/null