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The following commit(s) were added to refs/heads/2.4 by this push:
new a696296 MINOR: Update upgrade guide for ZK (#8182)
a696296 is described below
commit a696296fe3201291dfb34e5af9d96f2d6a104366
Author: Bill Bejeck <[email protected]>
AuthorDate: Thu Feb 27 18:01:44 2020 -0500
MINOR: Update upgrade guide for ZK (#8182)
Adding the ZK upgrade information to the Notable Changes section for 2.4.1
Reviewers: Ron Dagostino <[email protected]>, Jim Galasyn
<[email protected]>
---
docs/upgrade.html | 11 +++++++++++
1 file changed, 11 insertions(+)
diff --git a/docs/upgrade.html b/docs/upgrade.html
index 4394784..6b3775c 100644
--- a/docs/upgrade.html
+++ b/docs/upgrade.html
@@ -82,6 +82,17 @@
</li>
</ol>
+<h5><a id="upgrade_241_notable" href="#upgrade_241_notable">Notable changes in
2.4.1</a></h5>
+<ul>
+ <li>
+ ZooKeeper has been upgraded to 3.5.7, and a ZooKeeper upgrade from
3.4.X to 3.5.7 can fail if there are no snapshot files in the 3.4 data
directory.
+ This usually happens in test upgrades where ZooKeeper 3.5.7 is trying
to load an existing 3.4 data dir in which no snapshot file has been created.
+ For more information, see <a
href="https://issues.apache.org/jira/browse/ZOOKEEPER-3056";>ZOOKEEPER-3056</a>.
+ A fix is given in <a
href="https://issues.apache.org/jira/browse/ZOOKEEPER-3056";>ZOOKEEPER-3056</a>,
which is to set the <code>snapshot.trust.empty=true</code>
+ config in <code>zookeeper.properties</code> before the upgrade.
+ </li>
+</ul>
+
<h5><a id="upgrade_240_notable" href="#upgrade_240_notable">Notable changes in
2.4.0</a></h5>
<ul>
<li>A new Admin API has been added for partition reassignments. Due to
changing the way Kafka propagates reassignment information,
