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The following commit(s) were added to refs/heads/29.0.0 by this push:
new cd0f61de634 [backport] docs update for rolling updates (#15780)
cd0f61de634 is described below
commit cd0f61de63424de3df91151a0934c43daf62224e
Author: 317brian <[email protected]>
AuthorDate: Mon Jan 29 11:24:03 2024 -0800
[backport] docs update for rolling updates (#15780)
---
docs/operations/rolling-updates.md | 12 ++++++------
1 file changed, 6 insertions(+), 6 deletions(-)
diff --git a/docs/operations/rolling-updates.md
b/docs/operations/rolling-updates.md
index 521d06d62ef..b9471bc6b8e 100644
--- a/docs/operations/rolling-updates.md
+++ b/docs/operations/rolling-updates.md
@@ -27,15 +27,15 @@ For rolling Apache Druid cluster updates with no downtime,
we recommend updating
following order:
1. Historical
-2. \*Overlord (if any)
-3. \*Middle Manager/Indexers (if any)
-4. Standalone Real-time (if any)
-5. Broker
+2. Middle Manager and Indexer (if any)
+3. Broker
+4. Router
+5. Overlord (Note that you can upgrade the Overlord before any MiddleManager
processes if you use [autoscaling-based
replacement](#autoscaling-based-replacement).)
6. Coordinator ( or merged Coordinator+Overlord )
-For information about the latest release, see [Druid
releases](https://github.com/apache/druid/releases).
+If you need to do a rolling downgrade, reverse the order and start with the
Coordinator processes.
-\* In 0.12.0, there are protocol changes between the Kafka supervisor and
Kafka Indexing task and also some changes to the metadata formats persisted on
disk. Therefore, to support rolling upgrade, all the Middle Managers will need
to be upgraded first before the Overlord. Note that this ordering is different
from the standard order of upgrade, also note that this ordering is only
necessary when using the Kafka Indexing Service. If one is not using Kafka
Indexing Service or can handle do [...]
+For information about the latest release, see [Druid
releases](https://github.com/apache/druid/releases).
## Historical
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