morningman commented on code in PR #47604:
URL: https://github.com/apache/doris/pull/47604#discussion_r1947476379
##########
fe/fe-core/src/main/java/org/apache/doris/load/ExportMgr.java:
##########
@@ -543,6 +544,23 @@ public void removeOldExportJobs() {
}
}
}
+
+ int maximumHistoryJobNum = Config.maximum_history_job_num;
+ List<Map.Entry<Long, ExportJob>> jobList = new
ArrayList<>(exportIdToJob.entrySet());
+ jobList.sort(Comparator.comparingLong(entry ->
entry.getValue().getCreateTimeMs()));
Review Comment:
You can sort the jobs only when `exportIdToJob.size() >
maximumHistoryJobNum`, to save some time
##########
fe/fe-common/src/main/java/org/apache/doris/common/Config.java:
##########
@@ -190,6 +190,12 @@ public class Config extends ConfigBase {
"For ALTER, EXPORT jobs, remove the finished job if expired."})
public static int history_job_keep_max_second = 7 * 24 * 3600; // 7 days
+ @ConfField(mutable = true, masterOnly = true, description = {
+ "针对 EXPORT 作业，如果系统内 EXPORT 作业数量超过这个值，则会删除最老的记录。",
+ "For EXPORT jobs, If the number of EXPORT jobs in the system
exceeds this value, "
+ + "the oldest records will be deleted."})
+ public static int maximum_history_job_num = 1000; // 7 days
Review Comment:
```suggestion
public static int max_export_history_job_num = 1000;
```
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