feat(mito): add CatchupRequest

feat: reopen region before replay if need

Cargo.toml

@@ -191,7 +191,6 @@ git = "https://github.com/GreptimeTeam/greptime-meter.git"
 rev = "abbd357c1e193cd270ea65ee7652334a150b628f"
 
 [profile.dev]
-debug = 1
 
 [profile.release]
 debug = 1

src/datanode/src/region_server.rs

@@ -303,7 +303,8 @@ impl RegionServerInner {
             | RegionRequest::Alter(_)
             | RegionRequest::Flush(_)
             | RegionRequest::Compact(_)
-            | RegionRequest::Truncate(_) => RegionChange::None,
+            | RegionRequest::Truncate(_)
+            | RegionRequest::Catchup(_) => RegionChange::None,
         };
 
         let engine = match &region_change {

src/metric-engine/src/engine.rs

@@ -128,6 +128,8 @@ impl RegionEngine for MetricEngine {
             RegionRequest::Flush(_) => todo!(),
             RegionRequest::Compact(_) => todo!(),
             RegionRequest::Truncate(_) => todo!(),
+            /// It always Ok(0), all data is latest.
+            RegionRequest::Catchup(_) => Ok(0),
         };
 
         result.map_err(BoxedError::new)

src/mito2/src/engine.rs

@@ -19,6 +19,8 @@ mod alter_test;
 #[cfg(test)]
 mod basic_test;
 #[cfg(test)]
+mod catchup_test;
+#[cfg(test)]
 mod close_test;
 #[cfg(test)]
 mod compaction_test;