[jira] [Created] (HBASE-7434) Use generics appropriately in RPCEngine and reduce casts, with fixing a related bug of breaking thread-safety in HConnectionManager

["Hiroshi Ikeda (JIRA)" <ji...@apache.org>]

Hiroshi Ikeda created HBASE-7434:
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             Summary: Use generics appropriately in RPCEngine and reduce casts, with fixing a related bug of breaking thread-safety in HConnectionManager
                 Key: HBASE-7434
                 URL: https://issues.apache.org/jira/browse/HBASE-7434
             Project: HBase
          Issue Type: Improvement
            Reporter: Hiroshi Ikeda
            Priority: Minor


In RpcEngine,
{code}
  VersionedProtocol getProxy(Class<? extends VersionedProtocol> protocol, ...)
{code}
should be
{code}
  <T extends VersionedProtocol> T getProxy(Class<T> protocol, ...)
{code}

Also, while removing casts I encountered a bug of the method HConnectionManager.HConnectionImplementation.getProtocol() using broken logic just like double-checked locking for HashMap.

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