diff --git a/src/main/asciidoc/_chapters/architecture.adoc b/src/main/asciidoc/_chapters/architecture.adoc
index ebb06775aed..2ded8136c83 100644
--- a/src/main/asciidoc/_chapters/architecture.adoc
+++ b/src/main/asciidoc/_chapters/architecture.adoc
@@ -1216,6 +1216,22 @@ This will be the default for HBase 0.99 (link:https://issues.apache.org/jira/bro
 You must also enable HFile version 3 (which is the default HFile format starting in HBase 0.99.
 See link:https://issues.apache.org/jira/browse/HBASE-10855[HBASE-10855]). Distributed log replay is unsafe for rolling upgrades.
 
+[[wal.compression]]
+==== WAL Compression ====
+
+The content of the WAL can be compressed using LRU Dictionary compression.
+This can be used to speed up WAL replication to different datanodes.
+The dictionary can store up to 2^15^ elements; eviction starts after this number is exceeded.
+
+To enable WAL compression, set the `hbase.regionserver.wal.enablecompression` property to `true`.
+The default value for this property is `false`.
+By default, WAL tag compression is turned on when WAL compression is enabled.
+You can turn off WAL tag compression by setting the `hbase.regionserver.wal.tags.enablecompression` property to 'false'.
+
+A possible downside to WAL compression is that we lose more data from the last block in the WAL if it ill-terminated
+mid-write. If entries in this last block were added with new dictionary entries but we failed persist the amended
+dictionary because of an abrupt termination, a read of this last block may not be able to resolve last-written entries. 
+
 [[wal.disable]]
 ==== Disabling the WAL