caishunfeng commented on code in PR #16873:
URL:
https://github.com/apache/dolphinscheduler/pull/16873#discussion_r1887916780
##########
dolphinscheduler-registry/dolphinscheduler-registry-api/src/main/java/org/apache/dolphinscheduler/registry/api/ha/AbstractHAServer.java:
##########
@@ -78,21 +83,30 @@ public boolean isActive() {
@Override
public boolean participateElection() {
final String electionLock = selectorPath + "-lock";
- try {
- if (registry.acquireLock(electionLock)) {
- if (!registry.exists(selectorPath)) {
- registry.put(selectorPath, serverIdentify, true);
- return true;
+ // If meet exception during participate election, will retry.
+ // This can avoid the situation that the server is not elected as
leader due to network jitter.
+ for (int i = 0; i < DEFAULT_MAX_RETRY_TIMES; i++) {
+ try {
+ try {
+ if (registry.acquireLock(electionLock)) {
+ if (!registry.exists(selectorPath)) {
+ registry.put(selectorPath, serverIdentify, true);
+ return true;
+ }
+ return
serverIdentify.equals(registry.get(selectorPath));
+ }
+ return false;
+ } finally {
+ registry.releaseLock(electionLock);
}
Review Comment:
As the issue avoid to use lock, but it's actually still using lock, what's
the difference?
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