Alfredo Gimenez

Cassandra sink: columns with uppercase characters fail

4

The Cassandra json writer doesn't put escaped quotes around column names, so they're always made lowercase, thus failing on columns with uppercase characters. See docs here: https://www.datastax.com/dev/blog/whats-new-in-cassandra-2-2-json-support The example from...

Use rdpmc() user-space function for reading Libpfm samples

2

Reading samples without invoking kernel-space code should be much faster. Thanks @deater for the info!