chenjl/canal
1
0
Fork 0
mirror of https://github.com/alibaba/canal.git synced 2026-11-04 00:30:15 +08:00
Code Issues Packages Projects Releases Wiki Activity

当zk出现session time out可能会导致instance出现多个消费者，从而出现乱序 (#5270)

Browse Source
This commit is contained in:
lwd-coding
2024-09-13 17:02:19 +08:00
committed by GitHub
parent 5a968b3715
commit be0d945d7d
1 changed files with 5 additions and 1 deletions
Download Patch File Download Diff File Expand all files Collapse all files

6
server/src/main/java/com/alibaba/otter/canal/server/CanalMQStarter.java
View File

@@ -15,6 +15,7 @@ import org.slf4j.LoggerFactory;
import org.slf4j.MDC; import org.slf4j.MDC;
import java.util.Map; import java.util.Map;
import java.util.Objects;
import java.util.concurrent.ConcurrentHashMap; import java.util.concurrent.ConcurrentHashMap;
import java.util.concurrent.ExecutorService; import java.util.concurrent.ExecutorService;
import java.util.concurrent.Executors; import java.util.concurrent.Executors;
@@ -106,7 +107,10 @@ public class CanalMQStarter {
public synchronized void startDestination(String destination) { public synchronized void startDestination(String destination) {
CanalInstance canalInstance = canalServer.getCanalInstances().get(destination); CanalInstance canalInstance = canalServer.getCanalInstances().get(destination);
if (canalInstance != null) { CanalMQRunnable canalMQRunable = canalMQWorks.get(destination);
//当zk出现session time out可能会导致instance出现多个消费者，从而出现乱序
//因此当抢占成功的实例已经启动CanalMQRunnable时就不需要stop然后start了
if (canalInstance != null && Objects.isNull(canalMQRunable)) {
stopDestination(destination); stopDestination(destination);
CanalMQRunnable canalMQRunnable = new CanalMQRunnable(destination); CanalMQRunnable canalMQRunnable = new CanalMQRunnable(destination);
canalMQWorks.put(canalInstance.getDestination(), canalMQRunnable); canalMQWorks.put(canalInstance.getDestination(), canalMQRunnable);