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From "Flavio Junqueira (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (ZOOKEEPER-2804) Node creation fails with NPE if ACLs are null
Date Fri, 09 Jun 2017 15:32:18 GMT

    [ https://issues.apache.org/jira/browse/ZOOKEEPER-2804?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16044549#comment-16044549
] 

Flavio Junqueira commented on ZOOKEEPER-2804:
---------------------------------------------

Good catch [~Bhupendra]! Do you want to submit a patch?

> Node creation fails with NPE if ACLs are null
> ---------------------------------------------
>
>                 Key: ZOOKEEPER-2804
>                 URL: https://issues.apache.org/jira/browse/ZOOKEEPER-2804
>             Project: ZooKeeper
>          Issue Type: Bug
>            Reporter: Bhupendra Kumar Jain
>
> If null ACLs are passed then zk node creation fails with NPE
> {code}
> java.lang.NullPointerException
> 	at org.apache.zookeeper.server.PrepRequestProcessor.removeDuplicates(PrepRequestProcessor.java:1301)
> 	at org.apache.zookeeper.server.PrepRequestProcessor.fixupACL(PrepRequestProcessor.java:1341)
> 	at org.apache.zookeeper.server.PrepRequestProcessor.pRequest2Txn(PrepRequestProcessor.java:519)
> 	at org.apache.zookeeper.server.PrepRequestProcessor.pRequest(PrepRequestProcessor.java:1126)
> 	at org.apache.zookeeper.server.PrepRequestProcessor.run(PrepRequestProcessor.java:178)
> {code}
> Below APIs have problem.
> {code}
> public void create(final String path, byte data[], List<ACL> acl,
>             CreateMode createMode, StringCallback cb, Object ctx)
> public void create(final String path, byte data[], List<ACL> acl,
>             CreateMode createMode, Create2Callback cb, Object ctx)
> {code}
> Solution: 
> a)  Need to handle NULL ACLs in removeDuplicates method in server.  
> b) Also add the client side validation for null / empty ACL for above API similar to
other create API



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