rhauch commented on a change in pull request #277:
URL: https://github.com/apache/kafka-site/pull/277#discussion_r466057952
##########
File path: 26/upgrade.html
##########
@@ -19,6 +19,48 @@
<script id="upgrade-template" type="text/x-handlebars-template">
+<h4><a id="upgrade_2_6_0" href="#upgrade_2_6_0">Upgrading to 2.6.0 from any
version 0.8.x through 2.5.x</a></h4>
+
+<p><b>If you are upgrading from a version prior to 2.1.x, please see the note
below about the change to the schema used to store consumer offsets.
+ Once you have changed the inter.broker.protocol.version to the latest
version, it will not be possible to downgrade to a version prior to 2.1.</b></p>
+
+<p><b>For a rolling upgrade:</b></p>
+
+<ol>
+ <li> Update server.properties on all brokers and add the following
properties. CURRENT_KAFKA_VERSION refers to the version you
+ are upgrading from. CURRENT_MESSAGE_FORMAT_VERSION refers to the
message format version currently in use. If you have previously
+ overridden the message format version, you should keep its current
value. Alternatively, if you are upgrading from a version prior
+ to 0.11.0.x, then CURRENT_MESSAGE_FORMAT_VERSION should be set to
match CURRENT_KAFKA_VERSION.
+ <ul>
+ <li>inter.broker.protocol.version=CURRENT_KAFKA_VERSION (e.g.,
<code>2.5</code>, <code>2.4</code>, etc.)</li>
Review comment:
Rather than listing a bunch of the older versions, I wrapped with
`<code>` and listed newer versions going backward as examples.
Also changed for 2.5. and 2.4 sections.
##########
File path: 26/upgrade.html
##########
@@ -19,6 +19,48 @@
<script id="upgrade-template" type="text/x-handlebars-template">
+<h4><a id="upgrade_2_6_0" href="#upgrade_2_6_0">Upgrading to 2.6.0 from any
version 0.8.x through 2.5.x</a></h4>
+
+<p><b>If you are upgrading from a version prior to 2.1.x, please see the note
below about the change to the schema used to store consumer offsets.
+ Once you have changed the inter.broker.protocol.version to the latest
version, it will not be possible to downgrade to a version prior to 2.1.</b></p>
+
+<p><b>For a rolling upgrade:</b></p>
+
+<ol>
+ <li> Update server.properties on all brokers and add the following
properties. CURRENT_KAFKA_VERSION refers to the version you
+ are upgrading from. CURRENT_MESSAGE_FORMAT_VERSION refers to the
message format version currently in use. If you have previously
+ overridden the message format version, you should keep its current
value. Alternatively, if you are upgrading from a version prior
+ to 0.11.0.x, then CURRENT_MESSAGE_FORMAT_VERSION should be set to
match CURRENT_KAFKA_VERSION.
+ <ul>
+ <li>inter.broker.protocol.version=CURRENT_KAFKA_VERSION (e.g.,
<code>2.5</code>, <code>2.4</code>, etc.)</li>
+ <li>log.message.format.version=CURRENT_MESSAGE_FORMAT_VERSION
(See <a href="#upgrade_10_performance_impact">potential performance impact
+ following the upgrade</a> for the details on what this
configuration does.)</li>
+ </ul>
+ If you are upgrading from version 0.11.0.x or above, and you have not
overridden the message format, then you only need to override
+ the inter-broker protocol version.
+ <ul>
+ <li>inter.broker.protocol.version=CURRENT_KAFKA_VERSION (e.g.,
<code>2.5</code>, <code>2.4</code>, etc.)</li>
Review comment:
Rather than listing a bunch of the older versions, I wrapped with
`<code>` and listed newer versions going backward as examples.
Also changed for 2.5. and 2.4 sections.
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