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new c9cfaafac4f KAFKA-20331, KAFKA-20240: Update upgrade.md for new
KIP-1263 configs in 4.3 (#21822)
c9cfaafac4f is described below
commit c9cfaafac4f26f247ff4634867272c37496ae45f
Author: Sean Quah <[email protected]>
AuthorDate: Tue Apr 7 12:37:49 2026 +0100
KAFKA-20331, KAFKA-20240: Update upgrade.md for new KIP-1263 configs in 4.3
(#21822)
Reviewers: David Jacot <[email protected]>
---
docs/getting-started/upgrade.md | 2 ++
1 file changed, 2 insertions(+)
diff --git a/docs/getting-started/upgrade.md b/docs/getting-started/upgrade.md
index f4b5a634e02..15ee8b65dae 100644
--- a/docs/getting-started/upgrade.md
+++ b/docs/getting-started/upgrade.md
@@ -48,6 +48,8 @@ type: docs
* Support for cordoning log directories: For further details, please refer
to [KIP-1066](https://cwiki.apache.org/confluence/x/Lg_TEg).
* The `group.coordinator.rebalance.protocols` configuration is deprecated
and will be removed in Kafka 5.0. In Kafka 5.0, all protocols will always be
enabled and controlled solely by feature versions (`group.version`,
`streams.version`, `share.version`) via `kafka-features.sh`. For further
details, please refer to
[KIP-1237](https://cwiki.apache.org/confluence/x/jIqmFw).
* New group configs have been introduced: `share.delivery.count.limit`,
`share.partition.max.record.locks` and `share.renew.acknowledge.enable`, along
with equivalent broker configs for specifying minimum and maximum values. In
addition, the validation of group configs has been improved. For further
details, please refer to
[KIP-1240](https://cwiki.apache.org/confluence/x/tIHMFw).
+ * A new `group.coordinator.background.threads` config has been added to
control the size of the group coordinator's thread pool used to updating
regular expression subscriptions. Previously, the thread pool only had a single
thread. Now the thread pool has two threads by default and its size is
configurable. For further details, please refer to
[KIP-1263](https://cwiki.apache.org/confluence/x/DIE8G).
+ * New `group.consumer.assignment.interval.ms`,
`group.share.assignment.interval.ms` and `group.streams.assignment.interval.ms`
configs have been added to set the interval between assignment updates for
consumer, share and streams groups, along with broker configs for specifying
minimum and maximum values and group configs. These default to an interval of 1
second and previously had an effective value of 0. For further details, please
refer to [KIP-1263](https://cwiki.apache.org/conflue [...]
## Upgrading to 4.2.0
