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https://issues.apache.org/jira/browse/CURATOR-228?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14692864#comment-14692864
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Cameron McKenzie commented on CURATOR-228:
------------------------------------------
The argument from the guys on the dev list was that this breaks the contract of
the persistent ephemeral node, which is kind of true. Maybe we can just log an
error for now to stop the endless spamming of create requests to ZK for the
NOAUTH case and think about a better fix down the track?
> A serious death cycle error(一个严重的死循环错误)
> ---------------------------------------
>
> Key: CURATOR-228
> URL: https://issues.apache.org/jira/browse/CURATOR-228
> Project: Apache Curator
> Issue Type: Bug
> Components: Framework
> Affects Versions: 2.7.0, 2.7.1, 2.8.0
> Environment: windows linux mac ....
> Reporter: coder_czp
> Assignee: Cameron McKenzie
>
> 当用异步的方式创建带有多层目录的临时节点时，如果客户端没有zookeeper的写入权限，curator
> 就会陷入死循环,客户端会一直向服务器提交写入报文，但是永远不会成功。出错的代码逻辑如下:
> When used asynchronous way to create a temporary node multi directory, if the
> client does not have the zookeeper write permissions, the curator will get
> into a cycle of death, the client will has been submitted to the server write
> message, but never succeed. Error code logic is as follows:
> 1 PersistentEphemeralNode sessionNode = new
> PersistentEphemeralNode(curatorClient, Mode.EPHEMERAL,"/a/b/c", "test");
> sessionNode.start();
> CreateBuilderImpl:
> forPath(xx)-->pathInBackground(xx)-->
>
> CuratorFrameworkImpl:processBackgroundOperation(operationAndData, null);
>
> --->performBackgroundOperation(xx)
>
> OperationAndData:callPerformBackgroundOperation(xx)-->
>
> CreateBuilderImpl:performBackgroundOperation(xx)->backgroundCreateParentsThenNode(xx)
>
> -->queueOperation(xx){backgroundOperations.offer(operationAndData);}
>
> //这个循环会触发1，导致循环无法退出
> //This cycle will trigger 1, causing the loop to exit.
> //CuratorFrameworkImpl
> 2 private void backgroundOperationsLoop()
> {
> while ( !Thread.currentThread().isInterrupted() )
> {
> OperationAndData<?> operationAndData;
> try
> {
> operationAndData = backgroundOperations.take();
> if ( debugListener != null )
> {
> debugListener.listen(operationAndData);
> }
> }
> catch ( InterruptedException e )
> {
> Thread.currentThread().interrupt();
> break;
> }
> performBackgroundOperation(operationAndData);
> }
> }
> 如果需要更多细节，请给我发邮件: coder_...@126.com
> If you need more details, please email me:coder_...@126.com
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