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  1. ZooKeeper
  2. ZOOKEEPER-3215

Handle Java 9/11 additions of covariant return types to java.nio.ByteBuffer methods

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      Description

      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.

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              • Assignee:
                andor Andor Molnar
                Reporter:
                softwareengg V
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