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 <script id="upgrade-template" type="text/x-handlebars-template">
 
+<h4><a id="upgrade_3_0_2" href="#upgrade_3_0_2">Upgrading to 3.0.2 from any version 0.8.x through 2.8.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>2.6</code>, <code>2.5</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>2.6</code>, <code>2.5</code>, etc.)</li>
+        </ul>
+    </li>
+    <li> Upgrade the brokers one at a time: shut down the broker, update the code, and restart it. Once you have done so, the
+        brokers will be running the latest version and you can verify that the cluster's behavior and performance meets expectations.
+        It is still possible to downgrade at this point if there are any problems.
+    </li>
+    <li> Once the cluster's behavior and performance has been verified, bump the protocol version by editing
+        <code>inter.broker.protocol.version</code> and setting it to <code>3.0</code>.
+    </li>
+    <li> Restart the brokers one by one for the new protocol version to take effect. Once the brokers begin using the latest
+        protocol version, it will no longer be possible to downgrade the cluster to an older version.
+    </li>
+    <li> If you have overridden the message format version as instructed above, then you need to do one more rolling restart to
+        upgrade it to its latest version. Once all (or most) consumers have been upgraded to 0.11.0 or later,
+        change log.message.format.version to 3.0 on each broker and restart them one by one. Note that the older Scala clients,
+        which are no longer maintained, do not support the message format introduced in 0.11, so to avoid conversion costs
+        (or to take advantage of <a href="#upgrade_11_exactly_once_semantics">exactly once semantics</a>),
+        the newer Java clients must be used.
+    </li>
+</ol>
+
+<h5><a id="upgrade_302_notable" href="#upgrade_302_notable">Notable changes in 3.0.2</a></h5>
+<ul>
+    <li>A notable exception to producer idempotence being enabled by default in 3.0.1 is Connect.
+        In 3.0.2 Connect by default disables idempotent behavior for all of its
+        producers in order to uniformly support using a wide range of Kafka broker versions.
+        Users can change this behavior to enable idempotence for some or all producers
+        via Connect worker and/or connector configuration. Connect may enable idempotent producers
+        by default in a future major release.</li>
+    <li>The example connectors, <code>FileStreamSourceConnector</code> and <code>FileStreamSinkConnector</code>, have been
+        removed from the default classpath. To use them in Kafka Connect standalone or distributed mode they need to be
+        explicitly added, for example <code>CLASSPATH=./lib/connect-file-3.2.0.jar ./bin/connect-distributed.sh</code>.</li>
+</ul>
+
 <h5><a id="upgrade_301_notable" href="#upgrade_301_notable">Notable changes in 3.0.1</a></h5>
 <ul>
     <li>Idempotence for the producer is enabled by default if no conflicting configurations are set. When producing to brokers older than 2.8.0,