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https://issues.apache.org/jira/browse/ZOOKEEPER-3829?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17110847#comment-17110847
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benwang li edited comment on ZOOKEEPER-3829 at 5/19/20, 4:49 AM:
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[~symat]
Hi, I have pushed my code to my repo.
`git clone --depth=50 --branch=ZOOKEEPER-3829
g...@github.com:sundy-li/zookeeper.git`
With this fix, we won't reproduce this issue(but we use docker-compose down, we
still have this issue), you can try that.
{code:java}
docker-compose --project-name zookeeper --file
3_nodes_zk_mounted_data_folder.yml up -ddocker-compose --project-name zookeeper
--file 4_nodes_zk_mounted_data_folder.yml create zoo4
docker-compose --project-name zookeeper --file
4_nodes_zk_mounted_data_folder.yml start zoo4
docker-compose --project-name zookeeper --file
3_nodes_zk_mounted_data_folder.yml stop zoo1
docker-compose --project-name zookeeper --file
3_nodes_zk_mounted_data_folder.yml stop zoo2
docker-compose --project-name zookeeper --file
3_nodes_zk_mounted_data_folder.yml stop zoo3
## If we use docker-compose --project-name zookeeper --file
3_nodes_zk_mounted_data_folder.yml down, we reproduce this issue even with the
fix, that's weired.
docker-compose --project-name zookeeper --file
4_nodes_zk_mounted_data_folder.yml up -d
{code}
Yet I believe `localSessionsEnabled` configuration matters, maybe there is not
just one bug that causes this issue.
was (Author: sundyli):
[~symat]
Hi, I have pushed my code to my repo.
`git clone --depth=50 --branch=ZOOKEEPER-3829
g...@github.com:sundy-li/zookeeper.git`
With this fix, we won't reproduce this issue. I still think it's the problem
of reusing `workerPool`, you can try that.
> Zookeeper refuses request after node expansion
> ----------------------------------------------
>
> Key: ZOOKEEPER-3829
> URL: https://issues.apache.org/jira/browse/ZOOKEEPER-3829
> Project: ZooKeeper
> Issue Type: Bug
> Components: server
> Affects Versions: 3.5.6
> Reporter: benwang li
> Priority: Major
> Attachments: d.log, screenshot-1.png
>
>
> It's easy to reproduce this bug.
> {code:java}
> //代码占位符
>
> Step 1. Deploy 3 nodes A,B,C with configuration A,B,C .
> Step 2. Deploy node ` D` with configuration `A,B,C,D` , cluster state is ok
> now.
> Step 3. Restart nodes A,B,C with configuration A,B,C,D, then the leader will
> be D, cluster hangs, but it can accept `mntr` command, other command like `ls
> /` will be blocked.
> Step 4. Restart nodes D, cluster state is back to normal now.
>
> {code}
>
> We have looked into the code of 3.5.6 version, and we found it may be the
> issue of `workerPool` .
> The `CommitProcessor` shutdown and make `workerPool` shutdown, but
> `workerPool` still exists. It will never work anymore, yet the cluster still
> thinks it's ok.
>
> I think the bug may still exist in master branch.
> We have tested it in our machines by reset the `workerPool` to null. If it's
> ok, please assign this issue to me, and then I'll create a PR.
>
>
>
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