yujun777 commented on code in PR #29005:
URL: https://github.com/apache/doris/pull/29005#discussion_r1444155642
##########
fe/fe-core/src/main/java/org/apache/doris/system/Backend.java:
##########
@@ -823,4 +830,56 @@ public String getTagMapString() {
return "{" + new PrintableMap<>(tagMap, ":", true, false).toString() +
"}";
}
+ private void delExpireStatUnLock(long windowRight) {
+ while (true) {
+ Pair<Long, Long> stat = cloneFailedWindow.peekFirst();
+ if (stat == null || stat.first >= windowRight) {
+ break;
+ }
+ cloneFailedWindow.pollFirst();
+ }
+ }
+
+ public void updateCloneFailedWindow() {
+ lock.lock();
+ /*
+ oldestTimeStamp windowRight
currentTimeStamp
+ ^ ^
^
+ | |
|
+ | | window
|
+ | toDel |
+ */
+ long curFailTimeStamp = System.currentTimeMillis();
+ Long windowRight = curFailTimeStamp -
Config.be_check_health_window_length * 1000L;
+
+ delExpireStatUnLock(windowRight);
+
+ if (cloneFailedWindow.peekLast() != null
+ && curFailTimeStamp <= cloneFailedWindow.peekLast().first + 10
* 1000) {
+ cloneFailedWindow.peekLast().second++;
+ } else {
+ cloneFailedWindow.addLast(Pair.of(curFailTimeStamp, 1L));
+ }
+ lock.unlock();
+ }
+
+ public boolean isExceedCloneFailedLimit() {
+ lock.lock();
+ long currentTimeStamp = System.currentTimeMillis();
+ long windowRight = currentTimeStamp -
Config.be_check_health_window_length * 1000L;
+
+ delExpireStatUnLock(windowRight);
+
+ long count = cloneFailedWindow.stream()
+ .filter(stat -> (stat.first <= currentTimeStamp && stat.first
>= windowRight))
+ .mapToLong(stat -> stat.second).sum();
+ lock.unlock();
+ return count > Config.clone_tablet_in_window_failed_limit_number;
+ }
+
+ public void clearCloneFailedWindow() {
+ lock.lock();
+ cloneFailedWindow.clear();
+ lock.unlock();
Review Comment:
unlock should use in finally block of 'try {} finally {}';
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