BUG-5280: Add use-tell-based-protocol config knob

The configuration knob was not documented in the corresponding configuration
file. Add it with a short explanation.

Change-Id: Ie0e866c9cf98a39568051705bbf0b10b9feaf582
Signed-off-by: Robert Varga <rovarga@cisco.com>

diff --git a/opendaylight/md-sal/sal-clustering-config/src/main/resources/initial/datastore.cfg b/opendaylight/md-sal/sal-clustering-config/src/main/resources/initial/datastore.cfg
index 42c46bf9016363d9a5f32b9fcc6d726ddf1d7228..6d4d3b404ef9427086fcad04993358799bf234be 100644 (file)
--- a/opendaylight/md-sal/sal-clustering-config/src/main/resources/initial/datastore.cfg
+++ b/opendaylight/md-sal/sal-clustering-config/src/main/resources/initial/datastore.cfg
@@ -80,3 +80,7 @@ operational.persistent=false
 
 # The maximum size (in bytes) for snapshot chunks to be sent during sync
 #shard-snapshot-chunk-size=20480000
+
+# Enable tell-based protocol between frontend (applications) and backend (shards). Using this protocol
+# should avoid AskTimeoutExceptions seen under heavy load. Defaults to false (use ask-based protocol).
+#use-tell-based-protocol=true