Release Notes - Hadoop Chukwa - Version 0.4

Overall status

This is the second public release of Chukwa, a log analysis framework on top of Hadoop. Chukwa has been tested at scale and used in some production settings, and is reasonably robust and well behaved. For instructions on setting up Chukwa, see the administration guide and the rest of the Chukwa documentation.

The collection components of Chukwa -- adaptors, agents, and collectors have been fairly aggressively tested, and can be counted on to perform properly and recover from failures.

The demux pipeline has been cleaned up somewhat, and is now documented. See the programming guide for a discussion of how to customize demux for your purposes.

HICC, the visualization component, is still "beta" quality. It's been used succesfully at multiple sites, but it's still brittle. Work is ongoing. Documentation is still sparse, and error reporting isn't always sufficiently clear.

Chukwa has not been extensively audited for security vulnerabilities. Do not run it except in trusted environments. Never run Chukwa as root: By default, the ExecAdaptor allows arbitrary remote execution.

Important changes since last release


Known Limitations