Add more detail about secondary indexing in the 2.8 release notes

Change-Id: I38a7a946d430e7a552178d235ef4ddf85dee8a87

1 files changed, 23 insertions, 0 deletions

diff --git a/ReleaseNotes/ReleaseNotes-2.8.txt b/ReleaseNotes/ReleaseNotes-2.8.txt
index 575bdce5d2..94299e1720 100644
--- a/ReleaseNotes/ReleaseNotes-2.8.txt
+++ b/ReleaseNotes/ReleaseNotes-2.8.txt
@@ -65,6 +65,29 @@ Buck].
 * Documentation is now built with Buck and link:http://asciidoctor.org[Asciidoctor].
 
 
+Indexing and Search
+~~~~~~~~~~~~~~~~~~~
+
+Gerrit can be configured to use a
+link:https://gerrit-documentation.storage.googleapis.com/Documentation/2.8/config-gerrit.html#index[
+secondary index] with Lucene or Solr.
+
+Existing search operations use the secondary index, when enabled, to increase
+performance and reduce resource usage.
+
+The following additional search operations are possible when secondary indexing
+is enabled:
+
+* New
+link:https://gerrit-documentation.storage.googleapis.com/Documentation/2.8/user-search.html#comment[
+`comment` search operator].
+
+* The link:https://gerrit-documentation.storage.googleapis.com/Documentation/2.8/user-search.html#file[
+`file` operator] can be used to find changes on the specified file.
+
+* Regular expressions are allowed in `file` searches.
+
+
 Configuration
 ~~~~~~~~~~~~~