KairosDB

Links

• https://kairosdb.github.io/
• https://github.com/kairosdb/kairosdb

Information

• 3 possible variants:
  • KairosDB with H2 (slow, only for testing)
  • KairosDB with HBase (deprecated, does not support seconds(?))
  • KairosDB with Cassandra
• When using READ() only a timerange (not a timestamp) is supported
• Status can be seen with nodetool status
• Performance notes: https://code.google.com/p/kairosdb/wiki/GettingStarted#Configuring_Cassandra
• Hardware notes: https://wiki.apache.org/cassandra/CassandraHardware
• Cassandra Cluster setup hints:
  • http://docs.datastax.com/en/cassandra/1.2/cassandra/initialize/initializeSingleDS.html
  • https://www.digitalocean.com/community/tutorials/how-to-configure-a-multi-node-cluster-with-cassandra-on-a-ubuntu-vps

Implementation Notes

• Cassandra 22X did not work, error: “all host pools marked down. Retry burden pushed out to client”
• Cassandra 21X works with the same config
• When using e.g. SCAN(), a message is thrown: “******* Type=number”
  • See https://github.com/kairosdb/kairosdb-client/issues/43

Other Related Links

• http://de.slideshare.net/codyaray/scalable-distributed-stats-infrastructure
• https://prezi.com/ajkjic0jdws3/kairosdb-cassandra-schema/

back