yujun777 commented on code in PR #22889:
URL: https://github.com/apache/doris/pull/22889#discussion_r1434811587


##########
fe/fe-core/src/main/java/org/apache/doris/load/sync/SyncJobManager.java:
##########
@@ -283,13 +286,28 @@ public void updateNeedSchedule() throws UserException {
     // Stopped jobs will be removed after Config.label_keep_max_second.
     public void cleanOldSyncJobs() {
         LOG.debug("begin to clean old sync jobs ");
+        cleanFinishedSyncJobsIf(job -> 
job.isExpired(System.currentTimeMillis()), -1);
+    }
+
+    /**
+     * Remove completed jobs if total job num exceed Config.label_num_threshold
+     */
+    public void cleanOverLimitSyncJobs() {
+        if (idToSyncJob.size() <= Config.label_num_threshold) {
+            return;
+        }
+        LOG.debug("begin to clean finished sync jobs ");
+        cleanFinishedSyncJobsIf(SyncJob::isCompleted, 
Config.label_num_threshold);

Review Comment:
   Is it better to remove oldest jobs when exceed limit 



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