msb-public-java
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xxl-job
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任务调度错过触发时间时的处理策略：

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- 可能原因：服务重启；调度线程被阻塞，线程被耗尽；上次调度持续阻塞，下次调度被错过；
- 处理策略：
    - 过期超10s：本地忽略，当前时间开始计算下次触发时间
    - 过期超过5s：过期10s内：立即触发一次，当前时间开始计算下次触发时间
pull/10/head
xuxueli 6 years ago
parent e01d2bc9b5
commit 5c1f59323e
2 changed files with 52 additions and 41 deletions
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6
doc/XXL-JOB官方文档.md
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@ -836,11 +836,11 @@ XXL-JOB调度模块默认采用并行机制，在多线程调度的情况下，
XXL-JOB的每个调度任务虽然在调度模块是并行调度执行的，但是任务调度传递到任务模块的“执行器”确实串行执行的，同时支持任务终止。
#### 5.4.6 过期处理策略
任务调度错过了触发时间：
任务调度错过触发时间时的处理策略：
- 可能原因：服务重启；调度线程被阻塞，线程被耗尽；上次调度持续阻塞，下次调度被错过；
- 处理策略：
- 过期5s内：立即触发一次，并计算下次触发时间；
- 过期超过5s：忽略过期触发，计算下次触发时间；
- 过期超10s：本地忽略，当前时间开始计算下次触发时间
- 过期超过5s：过期10s内：立即触发一次，当前时间开始计算下次触发时间
#### 5.4.7 日志回调服务

65
xxl-job-admin/src/main/java/com/xxl/job/admin/core/thread/JobScheduleHelper.java
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@ -1,8 +1,8 @@
package com.xxl.job.admin.core.thread;
import com.xxl.job.admin.core.conf.XxlJobAdminConfig;
import com.xxl.job.admin.core.model.XxlJobInfo;
import com.xxl.job.admin.core.cron.CronExpression;
import com.xxl.job.admin.core.model.XxlJobInfo;
import com.xxl.job.admin.core.trigger.TriggerTypeEnum;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
@ -58,7 +58,7 @@ public class JobScheduleHelper {
// tx start
// 1、查询JOB："下次调度30s内" ( ...... -5 ... now ...... +30 ...... )
// 1、查询JOB："下次调度30s内"
long maxNextTime = System.currentTimeMillis() + 30000;
long nowTime = System.currentTimeMillis();
List<XxlJobInfo> scheduleList = XxlJobAdminConfig.getAdminConfig().getXxlJobInfoDao().scheduleJobQuery(maxNextTime);
@ -66,35 +66,53 @@ public class JobScheduleHelper {
// 2、推送时间轮
for (XxlJobInfo jobInfo: scheduleList) {
// 过期策略：过期=更新下次触发时间为当前、过期是否5s内=立即出发，否则忽略；
if (jobInfo.getTriggerNextTime() < nowTime) {
jobInfo.setTriggerNextTime(nowTime);
if (jobInfo.getTriggerNextTime() < nowTime-10000) {
continue;
// 时间轮刻度计算
int ringSecond = -1;
if (jobInfo.getTriggerNextTime() < nowTime - 10000) { // 过期超10s：本地忽略，当前时间开始计算下次触发时间
ringSecond = -1;
jobInfo.setTriggerLastTime(jobInfo.getTriggerNextTime());
jobInfo.setTriggerNextTime(
new CronExpression(jobInfo.getJobCron())
.getNextValidTimeAfter(new Date())
.getTime()
);
} else if (jobInfo.getTriggerNextTime() < nowTime) { // 过期10s内：立即触发一次，当前时间开始计算下次触发时间
ringSecond = (int)((nowTime/1000)%60);
jobInfo.setTriggerLastTime(jobInfo.getTriggerNextTime());
jobInfo.setTriggerNextTime(
new CronExpression(jobInfo.getJobCron())
.getNextValidTimeAfter(new Date())
.getTime()
);
} else { // 未过期：正常触发，递增计算下次触发时间
ringSecond = (int)((jobInfo.getTriggerNextTime()/1000)%60);
jobInfo.setTriggerLastTime(jobInfo.getTriggerNextTime());
jobInfo.setTriggerNextTime(
new CronExpression(jobInfo.getJobCron())
.getNextValidTimeAfter(new Date(jobInfo.getTriggerNextTime()))
.getTime()
);
}
if (ringSecond == -1) {
continue;
}
// push async ring
int second = (int)((jobInfo.getTriggerNextTime()/1000)%60);
List<Integer> ringItemData = ringData.get(second);
List<Integer> ringItemData = ringData.get(ringSecond);
if (ringItemData == null) {
ringItemData = new ArrayList<Integer>();
ringData.put(second, ringItemData);
ringData.put(ringSecond, ringItemData);
}
ringItemData.add(jobInfo.getId());
logger.info(">>>>>>>>>>> xxl-job, push time-ring : " + second + " = " + Arrays.asList(ringItemData) );
logger.info(">>>>>>>>>>> xxl-job, push time-ring : " + ringSecond + " = " + Arrays.asList(ringItemData) );
}
// 3、更新trigger信息
for (XxlJobInfo jobInfo: scheduleList) {
// update
jobInfo.setTriggerLastTime(jobInfo.getTriggerNextTime());
jobInfo.setTriggerNextTime(
new CronExpression(jobInfo.getJobCron())
.getNextValidTimeAfter(new Date(jobInfo.getTriggerNextTime()))
.getTime()
);
XxlJobAdminConfig.getAdminConfig().getXxlJobInfoDao().scheduleUpdate(jobInfo);
}
@ -141,14 +159,8 @@ public class JobScheduleHelper {
List<Integer> ringItemData = new ArrayList<>();
int nowSecond = (int)((System.currentTimeMillis()/1000)%60); // 避免处理耗时太长，跨过刻度；
if (lastSecond == -1) {
if (ringData.containsKey(nowSecond)) {
List<Integer> tmpData = ringData.remove(nowSecond);
if (tmpData != null) {
ringItemData.addAll(tmpData);
}
lastSecond = (nowSecond+59)%60;
}
lastSecond = nowSecond;
} else {
for (int i = 1; i <=60; i++) {
int secondItem = (lastSecond+i)%60;
@ -162,7 +174,7 @@ public class JobScheduleHelper {
}
}
lastSecond = nowSecond;
}
logger.info(">>>>>>>>>>> xxl-job, time-ring beat : " + nowSecond + " = " + Arrays.asList(ringItemData) );
if (ringItemData!=null && ringItemData.size()>0) {
@ -171,7 +183,6 @@ public class JobScheduleHelper {
// do trigger
JobTriggerPoolHelper.trigger(jobId, TriggerTypeEnum.CRON, -1, null, null);
}
// clear
ringItemData.clear();
}

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