René's URL Explorer Experiment

{"@context":"https://schema.org","@type":"DiscussionForumPosting","headline":"BigTable: row.commit throwing _Rendezvous exception instead of ServiceUnavailable","articleBody":"We are using `retry.py` and creating a retry exception predicate as follows:\r\n\r\n```python\r\npredicate=retry.if_exception_type(exceptions.ServiceUnavailable)\r\n```\r\n\r\nHowever, since we are only getting `_Rendezvous` exceptions with `StatusCode.UNAVAILABLE` (see below stack trace), we had to change this to:\r\n\r\n```python\r\npredicate=retry.if_exception_type(exceptions.GrpcRendezvous)\r\n```\r\n\r\nI see a different issue in cloud datastore for mapping gRPC codes to service level exceptions: \r\n\r\nhttps://github.com/GoogleCloudPlatform/google-cloud-python/pull/2590\r\n\r\nWill this also be done for cloud bigtable?\r\n\r\nStack Trace:\r\n\r\n```python\r\n  File \"single_key_read_write.py\", line 135, in write\r\n    row.commit()\r\n  File \"/home/jenkins/.local/lib/python3.5/site-packages/google/cloud/bigtable/row.py\", line 445, in commit\r\n    retry_(retry_commit)()\r\n  File \"/home/jenkins/.local/lib/python3.5/site-packages/google/api_core/retry.py\", line 261, in retry_wrapped_func\r\n    on_error=on_error,\r\n  File \"/home/jenkins/.local/lib/python3.5/site-packages/google/api_core/retry.py\", line 178, in retry_target\r\n    return target()\r\n  File \"/home/jenkins/.local/lib/python3.5/site-packages/google/cloud/bigtable/row.py\", line 256, in __call__\r\n    client._data_stub.MutateRow(self.request_pb)\r\n  File \"/home/jenkins/.local/lib/python3.5/site-packages/grpc/_channel.py\", line 492, in __call__\r\n    return _end_unary_response_blocking(state, call, False, deadline)\r\n  File \"/home/jenkins/.local/lib/python3.5/site-packages/grpc/_channel.py\", line 440, in _end_unary_response_blocking\r\n    raise _Rendezvous(state, None, None, deadline)\r\ngrpc._channel._Rendezvous: \u003c_Rendezvous of RPC that terminated with (StatusCode.UNAVAILABLE, Transport closed)\u003e\r\n```\r\n","author":{"url":"https://github.com/zakons","@type":"Person","name":"zakons"},"datePublished":"2017-12-22T13:09:49.000Z","interactionStatistic":{"@type":"InteractionCounter","interactionType":"https://schema.org/CommentAction","userInteractionCount":7},"url":"https://github.com/4656/google-cloud-python/issues/4656"}