#33: Updated defaults to kafka 0.9

[mkwhitacre]

If we know the offset monitor isn't going to work with the default should we add some warning/logging/error out to this effect so consumers know as well?

[noslowerdna]

Maybe also bump default offset monitor version to latest (0.2.1)

[noslowerdna]

In README might link to http://kafka.apache.org/documentation.html#upgrade_9, as it's critical to temporarily set inter.broker.protocol.version=0.8.2.X for a rolling upgrade.

[mkwhitacre]

Changing the default seems like a major version bump.

[bbaugher]

We already did a major version bump when we remove a lot of the default attributes (https://github.com/cerner/cerner_kafka/commit/5674e21e519d65c26b566d108f8f446ec1f115a1).

[bbaugher]

If we know the offset monitor isn't going to work with the default should we add some warning/logging/error out to this effect so consumers know as well?

Are you referring to the switch to offset storage in kafka? It looks like by default its still zookeeper (doc look for offsets.storage).

[bbaugher]

Addressed all comments with this, https://github.com/cerner/cerner_kafka/commit/c0955cc46b0384d0bdf0c3b3f0f17404edf7a51b

[bbaugher]

Added upgrade guide to call out what we changed and was non-passive or what they should look out for, https://github.com/cerner/cerner_kafka/commit/f507c8014874a46acb4f1a15cc2daba9244c0d62

[mkwhitacre]

+1

[noslowerdna]

+1

[bbaugher]

Merging with enough +1s