[jira] [Created] (ZOOKEEPER-4219) Quota checks break setData in multi transactions

["Damien Diederen (Jira)" <ji...@apache.org>]

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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