SpringValueRegistry中throw ConcurrentModificationException

[zhangmingjava]

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描述bug

java.util.ConcurrentModificationException
at com.google.common.collect.LinkedListMultimap$NodeIterator.checkForConcurrentModification(LinkedListMultimap.java:345)
at com.google.common.collect.LinkedListMultimap$NodeIterator.hasNext(LinkedListMultimap.java:351)
at com.ctrip.framework.apollo.spring.property.SpringValueRegistry.scanAndClean(SpringValueRegistry.java:68)
at com.ctrip.framework.apollo.spring.property.SpringValueRegistry.access$000(SpringValueRegistry.java:18)
at com.ctrip.framework.apollo.spring.property.SpringValueRegistry$1.run(SpringValueRegistry.java:55)
at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308)
at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180)
at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
at java.lang.Thread.run(Thread.java:748)

复现

通过如下步骤可以复现：

1. springboot版本1.5.13.RELEASE,apollo-client版本 1.7.0
2. 启动项目抛出异常ConcurrentModificationException

期望

简介明了地描述你希望正常情况下应该发生什么

截图

如果可以，附上截图来描述你的问题

额外的细节和日志

• 版本： apollo-client 1.7.0
• 错误日志
• 配置：
• 平台和操作系统

[nobodyiam]

Would you please help to submit a demo showing this issue?

[zhangmingjava]

启动项目时,有这个日志输出.怀疑是该应用配置内存过小,导致scanAndClean任务和put并发冲突导致的.

[nobodyiam]

As the scanAndClean will run periodically, we could ignore the ConcurrentModificationException safely.
We may need to add locks to the register and scanAndClean methods to avoid potential ConcurrentModificationException.

[stale]

This issue has been automatically marked as stale because it has not had activity in the last 30 days. It will be closed in 7 days unless it is tagged "help wanted" or other activity occurs. Thank you for your contributions.

[stale]

This issue has been automatically closed because it has not had activity in the last 7 days. If this issue is still valid, please ping a maintainer and ask them to label it as "help wanted". Thank you for your contributions.

[huomengbo]

@nobodyiam 这个问题解决了吗，看代码还是之前的样子，我们这里也遇到了同样的问题，希望能快点修复