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{"@context":"https://schema.org","@type":"DiscussionForumPosting","headline":"Observed non-terminating stream error 500 Received RST_STREAM with error code 2","articleBody":"Hi\r\n\r\nI am using google pubsub service with flow control mechanism. I get this error very often after processing few messages.\r\n\r\n**INFO       2021-09-22 12:56:13,932 google.cloud.pubsub_v1.subscriber._protocol.streaming_pull_manager _should_terminate                    685 : Observed non-terminating stream error 503 The service was unable to fulfill your request. Please try again. [code=8a75]\r\nINFO       2021-09-22 12:56:13,933 google.cloud.pubsub_v1.subscriber._protocol.streaming_pull_manager _should_recover                      663 : Observed recoverable stream error 503 The service was unable to fulfill your request. Please try again. [code=8a75]\r\nINFO       2021-09-22 12:56:13,934 google.api_core.bidi           _reopen                              487 : Re-established stream\r\nINFO       2021-09-22 12:56:13,934 google.cloud.pubsub_v1.subscriber._protocol.streaming_pull_manager _should_terminate                    685 : Observed non-terminating stream error 503 The service was unable to fulfill your request. Please try again. [code=8a75]\r\nINFO       2021-09-22 12:56:13,934 google.cloud.pubsub_v1.subscriber._protocol.streaming_pull_manager _should_recover                      663 : Observed recoverable stream error 503 The service was unable to fulfill your request. Please try again. [code=8a75]**\r\n\r\n\r\nI am using the following code for flow control. The service restarts randomly after say half an hour to one hour. Is there a solution to handle this error so that the service is not down for that half an hour to one hour period.\r\n\r\n\r\n```\r\nsubscription_path = subscriber.subscription_path(project_id, subscription_id)\r\nflow_control = pubsub_v1.types.FlowControl(max_messages=10)\r\nstreaming_pull_future = subscriber.subscribe(\r\n        subscription_path, callback=callback_fn, flow_control=flow_control\r\n    )\r\n\r\n```\r\n\r\n","author":{"url":"https://github.com/saitej09","@type":"Person","name":"saitej09"},"datePublished":"2021-09-22T13:33:32.000Z","interactionStatistic":{"@type":"InteractionCounter","interactionType":"https://schema.org/CommentAction","userInteractionCount":20},"url":"https://github.com/504/python-pubsub/issues/504"}