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Posted to reviews@helix.apache.org by GitBox <gi...@apache.org> on 2020/05/27 23:41:08 UTC
[GitHub] [helix] kaisun2000 opened a new issue #1034: Fix leaking CallbackHandler and leaking Zk path in the Zookeeper server
kaisun2000 opened a new issue #1034:
URL: https://github.com/apache/helix/issues/1034
Recently we identified two class of leaking Zk path in Zookeeper server
1. Leaking current state CallbackHandler and subsequently if the leaked CallbackHandler current state instance session timeout, the Zk path of old current state parent path would be leaked on Zookeeper server. This would also result in "dangling" CallbackHandler which would leak memory and issue additional zookeeper read not necessary.
2. Leaking current state znode path. This is due to deletion of the current state znode is async to installing watcher in various thread in ZkClient, callbackhandler etc.
The current short term fix would address these two issues.
There are couple of other optimization that can be done in term of zookeeper access. We will put them as long term, and address them separately.
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[GitHub] [helix] jiajunwang closed issue #1034: Fix leaking CallbackHandler and leaking Zk path in the Zookeeper server
Posted by GitBox <gi...@apache.org>.
jiajunwang closed issue #1034:
URL: https://github.com/apache/helix/issues/1034
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