Called when an asynchronous call fails to complete normally. {@link IncompatibleRemoteServiceException}s, {@link InvocationException}s, or checked exceptions thrown by the service method are examples of the type of failures that can be passed to this method.
If caught is an instance of an {@link IncompatibleRemoteServiceException} the application should try toget into a state where a browser refresh can be safely done.
@param caught failure encountered while executing a remote procedure call
Called upon failure to fetch a particular chunk. Note that this may actually be called due to failure to fetch a prior chunk in this stream. After receiving a failure, the stream may or may not be valid. The client should not assume that the server's side of the stream has been closed.
this method handles the event of instance becoming unhealthy
@param clusterName name of cluster
@param instanceName name of instance which has failed in above mentioned cluster
@param isClusterShutdown flag indicating whether it is a cluster shutdown or instance shutdown
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