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https://issues.apache.org/jira/browse/ZOOKEEPER-4219?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Damien Diederen resolved ZOOKEEPER-4219.
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Resolution: Fixed
> Quota checks break setData in multi transactions
> ------------------------------------------------
>
> Key: ZOOKEEPER-4219
> URL: https://issues.apache.org/jira/browse/ZOOKEEPER-4219
> Project: ZooKeeper
> Issue Type: Bug
> Affects Versions: 3.7.0, 3.8.0
> Reporter: Damien Diederen
> Assignee: Damien Diederen
> Priority: Blocker
> Labels: pull-request-available
> Time Spent: 2h 20m
> Remaining Estimate: 0h
>
> On a server with {{enforceQuota=true}}, {{multi()}} transactions containing
> {{setData}} operations can throw {{NullPointerException}} during the quota
> check.
> On the server side, this looks like:
> {code:java}
> java.lang.NullPointerException
> at
> org.apache.zookeeper.server.ZooKeeperServer.checkQuota(ZooKeeperServer.java:2048)
> at
> org.apache.zookeeper.server.PrepRequestProcessor.pRequest2Txn(PrepRequestProcessor.java:397)
> [...]
> {code}
> On the client side, this is reflected as a {{MarshallingError}}:
> {code:java}
> org.apache.zookeeper.KeeperException$MarshallingErrorException:
> KeeperErrorCode = MarshallingError
> at org.apache.zookeeper.KeeperException.create(KeeperException.java:104)
> at org.apache.zookeeper.ZooKeeper.multiInternal(ZooKeeper.java:1758)
> [...]
> {code}
> This is visibly due to the quota check trying to access node data by path
> from the {{PrepRequestProcessor}} without considering the collection of
> {{outstandingChanges}}. I have a patch in the works.
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