runtime-api: do not cache None SessionInfo (#4726)

paritytech · Jan 15, 2022 · 4f5373a · 4f5373a
1 parent 5035047
commit 4f5373a
Showing 1 changed file with 4 additions and 1 deletion.
diff --git a/node/core/runtime-api/src/cache.rs b/node/core/runtime-api/src/cache.rs
@@ -305,7 +305,10 @@ impl RequestResultCache {
 	}
 
 	pub(crate) fn cache_session_info(&mut self, key: SessionIndex, value: Option<SessionInfo>) {
-		self.session_info.insert(key, ResidentSizeOf(value));
+		// only cache Some(SessionInfo)
+		if value.is_some() {
+			self.session_info.insert(key, ResidentSizeOf(value));
+		}
 	}
 
 	pub(crate) fn dmq_contents(