session_test: Increase tracing info timeout

Default values for fetching tracing info are quite strict in the driver:
it will make 5 attempts to fetch the data, waiting 3ms between attempts.

For Scylla this is enough, but for Cassandra it is not. For this reason
our tests sometimes fail.

This was partially (for one test) fixed previously:
61ad878

This commit fixes rest of the tests in session_test that could be affected.
It also changes timeout parameters. Previous fixed used 50 attempts with
200ms wait, I changed it to 200 attempts with 50ms wait in order to not
slow down Scylla tests unnecessarily.

Author: Lorak-mmk

scylla/src/transport/session_test.rs

@@ -1054,7 +1054,11 @@ async fn assert_in_tracing_table(session: &Session, tracing_uuid: Uuid) {
     // Tracing info might not be immediately available
     // If rows are empty perform 8 retries with a 32ms wait in between
 
-    for _ in 0..8 {
+    // The reason why we enable so long waiting for TracingInfo is... Cassandra. (Yes, again.)
+    // In Cassandra Java Driver, the wait time for tracing info is 10 seconds, so here we do the same.
+    // However, as Scylla usually gets TracingInfo ready really fast (our default interval is hence 3ms),
+    // we stick to a not-so-much-terribly-long interval here.
+    for _ in 0..200 {
         let rows_num = session
             .query(traces_query.clone(), (tracing_uuid,))
             .await
@@ -1068,7 +1072,7 @@ async fn assert_in_tracing_table(session: &Session, tracing_uuid: Uuid) {
         }
 
         // Otherwise retry
-        tokio::time::sleep(std::time::Duration::from_millis(32)).await;
+        tokio::time::sleep(std::time::Duration::from_millis(50)).await;
     }
 
     // If all retries failed panic with an error

scylla/src/utils/test_utils.rs

@@ -89,8 +89,8 @@ pub fn create_new_session_builder() -> GenericSessionBuilder<impl SessionBuilder
     // However, as Scylla usually gets TracingInfo ready really fast (our default interval is hence 3ms),
     // we stick to a not-so-much-terribly-long interval here.
     session_builder
-        .tracing_info_fetch_attempts(NonZeroU32::new(50).unwrap())
-        .tracing_info_fetch_interval(Duration::from_millis(200))
+        .tracing_info_fetch_attempts(NonZeroU32::new(200).unwrap())
+        .tracing_info_fetch_interval(Duration::from_millis(50))
 }
 
 #[cfg(test)]