Thanks Ismael. KIP is updated to use 0.9.0.0 and add link to the JIRA.
On Thu, Jan 14, 2016 at 8:46 AM, Ismael Juma <ism...@juma.me.uk> wrote: > On Thu, Jan 14, 2016 at 1:24 AM, Allen Wang <allenxw...@gmail.com> wrote: > > > Updated KIP regarding how broker JSON version will be handled and new > > procedure of upgrade. > > > Thanks Allen. In the following text, I think we should replace 0.9.0 with > 0.9.0.0: > > "Due to a bug introduced in 0.9.0 in ZkUtils.getBrokerInfo(), old clients > will throw an exception when it sees the broker JSON version is not 1 or 2. > Therefore, *a minor release 0.9.0.1 is required* to fix the problem first > so that old clients can parse future version of broker JSON in ZooKeeper. > That means 0.9.0 clients must be upgraded to 0.9.0.1 before 0.9.1 upgrade > can start. In addition, since ZkUtils.getBrokerInfo() is also used by > broker, version specific code has to be used when registering broker with > ZooKeeper" > > Also, I posted a PR for supporting version > 2 in 0.9.0.1 and trunk: > > https://github.com/apache/kafka/pull/773 > > Ismael >
