Damien Diederen created ZOOKEEPER-4219:
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Summary: 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
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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