TimeoutException

[CarlRahmstrom]

We are seeing this TimeoutException on Google App Engine. Is this a Guava error? What is causing it?

500 <title>Server Error</title>Request failed: Unexpected Error: com.google.common.base.VerifyException: java.util.concurrent.TimeoutException: Waited 6 seconds (plus 448534 nanoseconds delay) for ListFuture@6bec6af4[status=PENDING, info=[futures=[ApiFutureToListenableFuture{apiFuture=ListenableFutureToApiFuture{delegate=TransformFuture@3cd3b59[status=PENDING, info=[inputFuture=[ApiFutureToListenableFuture{apiFuture=ListenableFutureToApiFuture{delegate=CatchingFuture@6b405236[status=PENDING, info=[inputFuture=[com.google.api.core.AbstractApiFuture$InternalSettableFuture@3d682dcb[status=PENDING]], exceptionType=[class com.google.api.gax.rpc.ApiException], fallback=[com.google.api.core.ApiFutures$ApiFunctionToGuavaFunction@2f7ee6a9]]]}}], function=[com.google.api.core.ApiFutures$ApiFunctionToGuavaFunction@458317ec]]]}}, ApiFutureToListenableFuture{apiFuture=ListenableFutureToApiFuture{delegate=TransformFuture@18ad678[status=PENDING, info=[inputFuture=[ApiFutureToListenableFuture{apiFuture=ListenableFutureToApiFuture{delegate=CatchingFuture@7bf8dd09[status=PENDING, info=[inputFuture=[com.google.api.core.AbstractApiFuture$InternalSettableFuture@66e44890[status=PENDING]], exceptionType=[class com.google.api.gax.rpc.ApiException], fallback=[com.google.api.core.ApiFutures$ApiFunctionToGuavaFunction@7b7f1168]]]}}], function=[com.google.api.core.ApiFutures$ApiFunctionToGuavaFunction@2c913169]]]}}, ApiFutureToListenableFuture{apiFuture=ListenableFutureToApiFuture{delegate=TransformFuture@4ae33720[status=SUCCESS, result=[null]]}}, ApiFutureToListenableFuture{apiFuture=ListenableFutureToApiFuture{delegate=TransformFuture@1970ff79[status=PENDING, info=[inputFuture=[ApiFutureToListenableFuture{apiFuture=ListenableFutureToApiFuture{delegate=CatchingFuture@22e47d8b[status=PENDING, info=[inputFuture=[com.google.api.core.AbstractApiFuture$InternalSettableFuture@375bf9ed[status=PENDING]], exceptionType=[class com.google.api.gax.rpc.ApiException], fallback=[com.google.api.core.ApiFutures$ApiFunctionToGuavaFunction@2fe9d272]]]}}], function=[com.google.api.core.ApiFutures$ApiFunctionToGuavaFunction@31fc7bc1]]]}}, ApiFutureToListenableFuture{apiFuture=ListenableFutureToApiFuture{delegate=TransformFuture@51da855b[status=SUCCESS, result=[null]]}}]]]

[cgdecker]

This does not look like a Guava error, it looks like something (maybe a network request or something like that) is timing out because it's taking too long. If it's an issue in a library at all (which I think is unlikely) it would probably be https://github.com/googleapis/sdk-platform-java.