Fix in H2OCountedCompleter which possibly masks exceptions in high priority tasks - when high priority task fails, call completeExceptionally instead of onExceptionalCompletion (which only call the handler but does not set the exceptional completion flag and does not propagate the exception up).
Fix in H2OCountedCompleter which possibly masks exceptions in high priority tasks - when high priority task fails, call completeExceptionally instead of onExceptionalCompletion (which only call the handler but does not set the exceptional completion flag and does not propagate the exception up).

jangorecki/h2o-3,brightchen/h2o-3,jangorecki/h2o-3,YzPaul3/h2o-3,madmax983/h2o-3,brightchen/h2o-3,junwucs/h2o-3,pchmieli/h2o-3,madmax983/h2o-3,printedheart/h2o-3,printedheart/h2o-3,madmax983/h2o-3,h2oai/h2o-3,kyoren/https-github.com-h2oai-h2o-3,kyoren/https-github.com-h2oai-h2o-3,pchmieli/h2o-3,mathemage/h2o-3,printedheart/h2o-3,h2oai/h2o-dev,madmax983/h2o-3,brightchen/h2o-3,pchmieli/h2o-3,kyoren/https-github.com-h2oai-h2o-3,h2oai/h2o-dev,brightchen/h2o-3,kyoren/https-github.com-h2oai-h2o-3,mathemage/h2o-3,pchmieli/h2o-3,datachand/h2o-3,madmax983/h2o-3,junwucs/h2o-3,michalkurka/h2o-3,h2oai/h2o-dev,h2oai/h2o-3,michalkurka/h2o-3,pchmieli/h2o-3,spennihana/h2o-3,spennihana/h2o-3,datachand/h2o-3,jangorecki/h2o-3,YzPaul3/h2o-3,brightchen/h2o-3,spennihana/h2o-3,mathemage/h2o-3,h2oai/h2o-3,madmax983/h2o-3,brightchen/h2o-3,michalkurka/h2o-3,kyoren/https-github.com-h2oai-h2o-3,mathemage/h2o-3,madmax983/h2o-3,h2oai/h2o-3,junwucs/h2o-3,YzPaul3/h2o-3,h2oai/h2o-3,junwucs/h2o-3,datachand/h2o-3,datachand/h2o-3,kyoren/https-github.com-h2oai-h2o-3,michalkurka/h2o-3,michalkurka/h2o-3,jangorecki/h2o-3,YzPaul3/h2o-3,jangorecki/h2o-3,mathemage/h2o-3,pchmieli/h2o-3,spennihana/h2o-3,h2oai/h2o-3,spennihana/h2o-3,datachand/h2o-3,YzPaul3/h2o-3,junwucs/h2o-3,michalkurka/h2o-3,datachand/h2o-3,brightchen/h2o-3,h2oai/h2o-dev,printedheart/h2o-3,mathemage/h2o-3,pchmieli/h2o-3,printedheart/h2o-3,h2oai/h2o-dev,spennihana/h2o-3,h2oai/h2o-dev,mathemage/h2o-3,h2oai/h2o-3,junwucs/h2o-3,jangorecki/h2o-3,h2oai/h2o-3,jangorecki/h2o-3,printedheart/h2o-3,datachand/h2o-3,YzPaul3/h2o-3,michalkurka/h2o-3,printedheart/h2o-3,spennihana/h2o-3,h2oai/h2o-dev,YzPaul3/h2o-3,kyoren/https-github.com-h2oai-h2o-3,junwucs/h2o-3