[kafka] branch 2.1 updated: MINOR: Add a note about Zstandard compression in the upgrade docs

[li...@apache.org]

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lindong pushed a commit to branch 2.1
in repository https://gitbox.apache.org/repos/asf/kafka.git


The following commit(s) were added to refs/heads/2.1 by this push:
     new 600d4db  MINOR: Add a note about Zstandard compression in the upgrade docs
600d4db is described below

commit 600d4dbda56454c92e52f4ab6cda87d8d73dbc7c
Author: Jason Gustafson <ja...@confluent.io>
AuthorDate: Thu Oct 18 11:13:38 2018 -0700

    MINOR: Add a note about Zstandard compression in the upgrade docs
    
    Author: Jason Gustafson <ja...@confluent.io>
    
    Reviewers: Dong Lin <li...@gmail.com>
    
    Closes #5817 from hachikuji/add-zstandard-upgrade-notes
---
 docs/upgrade.html | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/docs/upgrade.html b/docs/upgrade.html
index e3e20f9..f879ae3 100644
--- a/docs/upgrade.html
+++ b/docs/upgrade.html
@@ -50,6 +50,10 @@
         and insight by viewing the metrics captured from the <code>AdminClient</code>. For more information
         see <a href="https://cwiki.apache.org/confluence/display/KAFKA/KIP-324%3A+Add+method+to+get+metrics%28%29+in+AdminClient">KIP-324</a>
     </li>
+    <li>Kafka now supports Zstandard compression from <a href="https://cwiki.apache.org/confluence/display/KAFKA/KIP-110%3A+Add+Codec+for+ZStandard+Compression">KIP-110</a>.
+        You must upgrade the broker as well as clients to make use of it. Consumers prior to 2.1.0 will not be able to read from topics which use
+        Zstandard compression, so you should not enable it for a topic until all downstream consumers are upgraded. See the KIP for more detail.
+    </li>
 </ul>
 
 <h4><a id="upgrade_2_0_0" href="#upgrade_2_0_0">Upgrading from 0.8.x, 0.9.x, 0.10.0.x, 0.10.1.x, 0.10.2.x, 0.11.0.x, 1.0.x, or 1.1.x to 2.0.0</a></h4>