zookeeper-dev mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From "V (JIRA)" <j...@apache.org>
Subject [jira] [Created] (ZOOKEEPER-3215) Handle Java 9/11 additions of covariant return types to java.nio.ByteBuffer methods
Date Thu, 13 Dec 2018 20:55:00 GMT
V created ZOOKEEPER-3215:
----------------------------

             Summary: Handle Java 9/11 additions of covariant return types to java.nio.ByteBuffer
methods
                 Key: ZOOKEEPER-3215
                 URL: https://issues.apache.org/jira/browse/ZOOKEEPER-3215
             Project: ZooKeeper
          Issue Type: Bug
    Affects Versions: 3.4.13
            Reporter: V


Java 9 introduces covariant return types which allows one to have different return types if
return type in the overridden method is a sub type. Since Java 9, few functions return ByteBuffer,
whereas the parent method return Buffer, resulting in causing issues for Java 8 and below
since for them the method does not exist.

Steps To Reproduce:
1. Setup ZooKeeper Server with JDK11.
2. Setup ZooKeeper Client with JDK8.
3. Try connecting the client and server.

Results:
Cast ByteBuffer instances to Buffer before calling the method.

 

Notes:
There was a similar bug in the MongoDB community - [https://jira.mongodb.org/browse/JAVA-2559]

 

This is not a contribution.



--
This message was sent by Atlassian JIRA
(v7.6.3#76005)

Mime
View raw message