[improvement](info) Add F/L commitSeq and commitTs for get_lag

fe/fe-core/src/main/java/org/apache/doris/binlog/BinlogLagInfo.java

@@ -0,0 +1,63 @@
+// Licensed to the Apache Software Foundation (ASF) under one
+// or more contributor license agreements.  See the NOTICE file
+// distributed with this work for additional information
+// regarding copyright ownership.  The ASF licenses this file
+// to you under the Apache License, Version 2.0 (the
+// "License"); you may not use this file except in compliance
+// with the License.  You may obtain a copy of the License at
+//
+//   http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing,
+// software distributed under the License is distributed on an
+// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+// KIND, either express or implied.  See the License for the
+// specific language governing permissions and limitations
+// under the License.
+
+package org.apache.doris.binlog;
+
+public class BinlogLagInfo {
+    private long lag;
+    private long firstCommitSeq;
+    private long lastCommitSeq;
+    private long firstCommitTs;
+    private long lastCommitTs;
+
+    public BinlogLagInfo(long lag, long firstCommitSeq, long lastCommitSeq, long firstCommitTs, long lastCommitTs) {
+        this.lag = lag;
+        this.firstCommitSeq = firstCommitSeq;
+        this.lastCommitSeq = lastCommitSeq;
+        this.firstCommitTs = firstCommitTs;
+        this.lastCommitTs = lastCommitTs;
+    }
+
+    public BinlogLagInfo() {
+        lag = 0;
+        firstCommitSeq = 0;
+        lastCommitSeq = 0;
+        firstCommitTs = 0;
+        lastCommitTs = 0;
+    }
+
+    public long getLag() {
+        return lag;
+    }
+
+    public long getFirstCommitSeq() {
+        return firstCommitSeq;
+    }
+
+    public long getLastCommitSeq() {
+        return lastCommitSeq;
+    }
+
+    public long getFirstCommitTs() {
+        return firstCommitTs;
+    }
+
+    public long getLastCommitTs() {
+        return lastCommitTs;
+    }
+
+}

fe/fe-core/src/main/java/org/apache/doris/binlog/BinlogManager.java

@@ -492,7 +492,7 @@ public Pair<TStatus, TBinlog> getBinlog(long dbId, long tableId, long prevCommit
     }
 
     // get binlog by dbId, return first binlog.version > version
-    public Pair<TStatus, Long> getBinlogLag(long dbId, long tableId, long prevCommitSeq) {
+    public Pair<TStatus, BinlogLagInfo> getBinlogLag(long dbId, long tableId, long prevCommitSeq) {
         TStatus status = new TStatus(TStatusCode.OK);
         lock.readLock().lock();
         try {
@@ -502,7 +502,6 @@ public Pair<TStatus, Long> getBinlogLag(long dbId, long tableId, long prevCommit
                 LOG.warn("dbBinlog not found. dbId: {}", dbId);
                 return Pair.of(status, null);
             }
-
             return dbBinlog.getBinlogLag(tableId, prevCommitSeq);
         } finally {
             lock.readLock().unlock();

fe/fe-core/src/main/java/org/apache/doris/binlog/BinlogUtils.java

@@ -50,12 +50,15 @@ public static Pair<TStatus, TBinlog> getBinlog(TreeSet<TBinlog> binlogs, long pr
         }
     }
 
-    public static Pair<TStatus, Long> getBinlogLag(TreeSet<TBinlog> binlogs, long prevCommitSeq) {
+    public static Pair<TStatus, BinlogLagInfo> getBinlogLag(TreeSet<TBinlog> binlogs, long prevCommitSeq) {
         TStatus status = new TStatus(TStatusCode.OK);
         TBinlog firstBinlog = binlogs.first();
+        TBinlog lastBinlog = binlogs.last();
 
         if (firstBinlog.getCommitSeq() > prevCommitSeq) {
-            return Pair.of(status, Long.valueOf(binlogs.size()));
+            BinlogLagInfo lagInfo = new BinlogLagInfo(binlogs.size(), firstBinlog.getCommitSeq(),
+                    firstBinlog.getTimestamp(), lastBinlog.getCommitSeq(), lastBinlog.getTimestamp());
+            return Pair.of(status, lagInfo);
         }
 
         // find first binlog whose commitSeq > commitSeq
@@ -64,11 +67,20 @@ public static Pair<TStatus, Long> getBinlogLag(TreeSet<TBinlog> binlogs, long pr
         TBinlog binlog = binlogs.higher(guard);
 
         // all prevCommitSeq <= commitSeq
-        if (binlog == null) {
-            return Pair.of(status, 0L);
-        } else {
-            return Pair.of(status, Long.valueOf(binlogs.tailSet(binlog).size()));
+        long lag = 0;
+        long lastCommitSeq = 0;
+        long lastCommitTs = 0;
+        long firstCommitSeq = 0;
+        long firstCommitTs = 0;
+        if (binlog != null) {
+            lag = binlogs.tailSet(binlog).size();
+            firstCommitSeq = binlog.getCommitSeq();
+            firstCommitTs = binlog.getTimestamp();
+            lastCommitSeq = lastBinlog.getCommitSeq();
+            lastCommitTs = lastBinlog.getTimestamp();
         }
+        return Pair.of(status, new BinlogLagInfo(lag, firstCommitSeq, lastCommitSeq,
+                firstCommitTs, lastCommitTs));
     }
 
     public static TBinlog newDummyBinlog(long dbId, long tableId) {

fe/fe-core/src/main/java/org/apache/doris/binlog/DBBinlog.java

@@ -261,7 +261,7 @@ public List<Long> getDroppedIndexes() {
         }
     }
 
-    public Pair<TStatus, Long> getBinlogLag(long tableId, long prevCommitSeq) {
+    public Pair<TStatus, BinlogLagInfo> getBinlogLag(long tableId, long prevCommitSeq) {
         TStatus status = new TStatus(TStatusCode.OK);
         lock.readLock().lock();
         try {
@@ -723,4 +723,5 @@ private void recordDroppedOrRecoveredResources(TBinlogType binlogType, long comm
             }
         }
     }
+
 }

fe/fe-core/src/main/java/org/apache/doris/binlog/TableBinlog.java

@@ -115,7 +115,7 @@ public Pair<TStatus, TBinlog> getBinlog(long prevCommitSeq) {
         }
     }
 
-    public Pair<TStatus, Long> getBinlogLag(long prevCommitSeq) {
+    public Pair<TStatus, BinlogLagInfo> getBinlogLag(long prevCommitSeq) {
         lock.readLock().lock();
         try {
             return BinlogUtils.getBinlogLag(binlogs, prevCommitSeq);
@@ -353,4 +353,5 @@ public void getBinlogInfo(Database db, BaseProcResult result) {
             lock.readLock().unlock();
         }
     }
+
 }

fe/fe-core/src/main/java/org/apache/doris/service/FrontendServiceImpl.java

@@ -29,6 +29,7 @@
 import org.apache.doris.analysis.TableRef;
 import org.apache.doris.analysis.UserIdentity;
 import org.apache.doris.backup.Snapshot;
+import org.apache.doris.binlog.BinlogLagInfo;
 import org.apache.doris.catalog.AutoIncrementGenerator;
 import org.apache.doris.catalog.Column;
 import org.apache.doris.catalog.Database;
@@ -3291,16 +3292,19 @@ private TGetBinlogLagResult getBinlogLagImpl(TGetBinlogRequest request, String c
         result.setStatus(new TStatus(TStatusCode.OK));
         long prevCommitSeq = request.getPrevCommitSeq();
 
-        Pair<TStatus, Long> statusLagPair = env.getBinlogManager().getBinlogLag(dbId, tableId, prevCommitSeq);
-        TStatus status = statusLagPair.first;
+        Pair<TStatus, BinlogLagInfo> binlogLagInfo = env.getBinlogManager().getBinlogLag(dbId, tableId, prevCommitSeq);
+        TStatus status = binlogLagInfo.first;
         if (status != null && status.getStatusCode() != TStatusCode.OK) {
             result.setStatus(status);
         }
-        Long binlogLag = statusLagPair.second;
-        if (binlogLag != null) {
-            result.setLag(binlogLag);
+        BinlogLagInfo lagInfo = binlogLagInfo.second;
+        if (lagInfo != null) {
+            result.setLag(lagInfo.getLag());
+            result.setFirstCommitSeq(lagInfo.getFirstCommitSeq());
+            result.setLastCommitSeq(lagInfo.getLastCommitSeq());
+            result.setFirstBinlogTimestamp(lagInfo.getFirstCommitTs());
+            result.setLastBinlogTimestamp(lagInfo.getLastCommitTs());
         }
-
         return result;
     }
 

gensrc/thrift/FrontendService.thrift

@@ -1252,6 +1252,10 @@ struct TGetBinlogLagResult {
     1: optional Status.TStatus status
     2: optional i64 lag
     3: optional Types.TNetworkAddress master_address
+    4: optional i64 first_commit_seq
+    5: optional i64 last_commit_seq
+    6: optional i64 first_binlog_timestamp
+    7: optional i64 last_binlog_timestamp
 }
 
 struct TUpdateFollowerStatsCacheRequest {