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Support clarification and formatting fixes #771

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ccd8368
Possibly a typo. Operations/java-version.md says Java 21 is fully sup…
Jac2NL Dec 29, 2025
5dc9473
Formatting; include versions > 4.0
Jac2NL Dec 29, 2025
1264569
synced with 41 version
Jac2NL Dec 30, 2025
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38 changes: 26 additions & 12 deletions content/en/40/getting-started/compatibility.md
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Original file line number Diff line number Diff line change
Expand Up @@ -50,7 +50,7 @@ Java 17
</th>
<th>

Java 23
Java 21
</th> </tr>
<tr>
<td>
Expand All @@ -59,7 +59,7 @@ Clients
</td>
<td>

4.0.0
4.x
</td>
<td>

Expand All @@ -80,7 +80,7 @@ Streams
</td>
<td>

4.0.0
4.x
</td>
<td>

Expand All @@ -101,7 +101,7 @@ Connect
</td>
<td>

4.0.0
4.x
</td>
<td>

Expand All @@ -122,7 +122,7 @@ Server
</td>
<td>

4.0.0
4.x
</td>
<td>

Expand All @@ -149,11 +149,11 @@ KRaft Cluster Version
</th>
<th>

Compatibility 4.0 Server (dynamic voter)
Compatibility 4.x Server (dynamic voter)
</th>
<th>

Compatibility 4.0 Server (static voter)
Compatibility 4.x Server (static voter)
</th> </tr>
<tr>
<td>
Expand Down Expand Up @@ -262,18 +262,21 @@ before 3.2.x
<tr>
<td>

4.0.x
4.x
</td>
<td>

✅
</td>
<td>

✅
</td> </tr>
<tr>
<td>

</td> </tr> </table>

**Note: Can’t upgrade server from static voter to dynamic voter, see[KAFKA-16538](https://issues.apache.org/jira/browse/KAFKA-16538).**
**Note: Can’t upgrade server from static voter to dynamic voter, see [KAFKA-16538](https://issues.apache.org/jira/browse/KAFKA-16538).**

## Client/Broker Forward Compatibility

Expand All @@ -289,7 +292,7 @@ Module
</th>
<th>

Compatibility with Kafka 4.0
Compatibility with Kafka 4.x
</th>
<th>

Expand All @@ -314,7 +317,8 @@ Pre-0.10.x protocols are fully removed in Kafka 4.0 ([KIP-896](https://cwiki.apa
</td> </tr>
<tr>
<td>

</td>
<td>
Streams
</td>
<td>
Expand All @@ -327,6 +331,8 @@ Pre-0.10.x protocols are fully removed in Kafka 4.0 ([KIP-896](https://cwiki.apa
</td> </tr>
<tr>
<td>
</td>
<td>

Connect
</td>
Expand Down Expand Up @@ -357,6 +363,8 @@ More details in the [Consumer](/40/documentation.html#upgrade_400_notable_consum
</td> </tr>
<tr>
<td>
</td>
<td>

Streams
</td>
Expand All @@ -370,6 +378,8 @@ More details in the [Kafka Streams](/40/documentation.html#upgrade_400_notable_k
</td> </tr>
<tr>
<td>
</td>
<td>

Connect
</td>
Expand Down Expand Up @@ -400,6 +410,8 @@ Client
</td> </tr>
<tr>
<td>
</td>
<td>

Streams
</td>
Expand All @@ -413,6 +425,8 @@ Streams
</td> </tr>
<tr>
<td>
</td>
<td>

Connect
</td>
Expand Down
38 changes: 26 additions & 12 deletions content/en/41/getting-started/compatibility.md
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -50,7 +50,7 @@ Java 17
</th>
<th>

Java 23
Java 21
</th> </tr>
<tr>
<td>
Expand All @@ -59,7 +59,7 @@ Clients
</td>
<td>

4.0.0
4.x
</td>
<td>

Expand All @@ -80,7 +80,7 @@ Streams
</td>
<td>

4.0.0
4.x
</td>
<td>

Expand All @@ -101,7 +101,7 @@ Connect
</td>
<td>

4.0.0
4.x
</td>
<td>

Expand All @@ -122,7 +122,7 @@ Server
</td>
<td>

4.0.0
4.x
</td>
<td>

Expand All @@ -149,11 +149,11 @@ KRaft Cluster Version
</th>
<th>

Compatibility 4.0 Server (dynamic voter)
Compatibility 4.x Server (dynamic voter)
</th>
<th>

Compatibility 4.0 Server (static voter)
Compatibility 4.x Server (static voter)
</th> </tr>
<tr>
<td>
Expand Down Expand Up @@ -262,18 +262,21 @@ before 3.2.x
<tr>
<td>

4.0.x
4.x
</td>
<td>

✅
</td>
<td>

✅
</td> </tr>
<tr>
<td>

</td> </tr> </table>

**Note: Can’t upgrade server from static voter to dynamic voter, see[KAFKA-16538](https://issues.apache.org/jira/browse/KAFKA-16538).**
**Note: Can’t upgrade server from static voter to dynamic voter, see [KAFKA-16538](https://issues.apache.org/jira/browse/KAFKA-16538).**

## Client/Broker Forward Compatibility

Expand All @@ -289,7 +292,7 @@ Module
</th>
<th>

Compatibility with Kafka 4.0
Compatibility with Kafka 4.x
</th>
<th>

Expand All @@ -314,7 +317,8 @@ Pre-0.10.x protocols are fully removed in Kafka 4.0 ([KIP-896](https://cwiki.apa
</td> </tr>
<tr>
<td>

</td>
<td>
Streams
</td>
<td>
Expand All @@ -327,6 +331,8 @@ Pre-0.10.x protocols are fully removed in Kafka 4.0 ([KIP-896](https://cwiki.apa
</td> </tr>
<tr>
<td>
</td>
<td>

Connect
</td>
Expand Down Expand Up @@ -357,6 +363,8 @@ More details in the [Consumer](/40/documentation.html#upgrade_400_notable_consum
</td> </tr>
<tr>
<td>
</td>
<td>

Streams
</td>
Expand All @@ -370,6 +378,8 @@ More details in the [Kafka Streams](/40/documentation.html#upgrade_400_notable_k
</td> </tr>
<tr>
<td>
</td>
<td>

Connect
</td>
Expand Down Expand Up @@ -400,6 +410,8 @@ Client
</td> </tr>
<tr>
<td>
</td>
<td>

Streams
</td>
Expand All @@ -413,6 +425,8 @@ Streams
</td> </tr>
<tr>
<td>
</td>
<td>

Connect
</td>
Expand Down