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MINOR: Tweak upgrade note on KIP-62 to include request.timeout.ms 

Author: Jason Gustafson <jason@confluent.io>

Reviewers: Ismael Juma <ismael@juma.me.uk>

Closes #1960 from hachikuji/add-note-on-request-timeout
This commit is contained in:
Jason Gustafson 2016-10-04 10:38:49 -07:00
parent 1a396c9cf2
commit d8d2f3aac4
1 changed files with 7 additions and 1 deletions
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docs/upgrade.html
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@ -64,7 +64,13 @@ Note: Because new protocols are introduced, it is important to upgrade your Kafk
<li> Kafka clusters can now be uniquely identified by a cluster id. It will be automatically generated when a broker is upgraded to 0.10.1.0. The cluster id is available via the kafka.server:type=KafkaServer,name=ClusterId metric and it is part of the Metadata response. Serializers, client interceptors and metric reporters can receive the cluster id by implementing the ClusterResourceListener interface. </li>
<li> The BrokerState "RunningAsController" (value 4) has been removed. Due to a bug, a broker would only be in this state briefly before transitioning out of it and hence the impact of the removal should be minimal. The recommended way to detect if a given broker is the controller is via the kafka.controller:type=KafkaController,name=ActiveControllerCount metric. </li>
<li> The new Java Consumer now allows users to search offsets by timestamp on partitions. </li>
<li> The new Java Consumer now supports heartbeating from a background thread. There is a new configuration <code>max.poll.interval.ms</code> which controls the maximum time between poll invocations before the consumer will proactively leave the group (5 minutes by default). The default value of <code>session.timeout.ms</code> has been adjusted down to 10 seconds, and the default value of <code>max.poll.records</code> has been changed to 500.</li>
<li> The new Java Consumer now supports heartbeating from a background thread. There is a new configuration
<code>max.poll.interval.ms</code> which controls the maximum time between poll invocations before the consumer
will proactively leave the group (5 minutes by default). The value of the configuration
<code>request.timeout.ms</code> must always be larger than <code>max.poll.interval.ms</code> because this is the maximum
time that a JoinGroup request can block on the server while the consumer is rebalancing, so we have changed its default
value to just above 5 minutes. Finally, the default value of <code>session.timeout.ms</code> has been adjusted down to
10 seconds, and the default value of <code>max.poll.records</code> has been changed to 500.</li>
<li> When using an Authorizer and a user doesn't have <b>Describe</b> authorization on a topic, the broker will no
longer return TOPIC_AUTHORIZATION_FAILED errors to requests since this leaks topic names. Instead, the UNKNOWN_TOPIC_OR_PARTITION
error code will be returned. This may cause unexpected timeouts or delays when using the producer and consumer since