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ASF GitHub Bot logged work on BEAM-5428: ---------------------------------------- Author: ASF GitHub Bot Created on: 28/Aug/19 16:30 Start Date: 28/Aug/19 16:30 Worklog Time Spent: 10m Work Description: mxm commented on pull request #9418: [BEAM-5428][WIP] State caching in the Python SDK URL: https://github.com/apache/beam/pull/9418#discussion_r318678115 ########## File path: sdks/python/apache_beam/runners/worker/sdk_worker.py ########## @@ -613,13 +633,62 @@ def _blocking_request(self, request): if response.error: raise RuntimeError(response.error) else: + # TODO mxm here we could update the cache token return response def _next_id(self): self._last_id += 1 return str(self._last_id) +class CachingGrpcStateHandler(GrpcStateHandler): + """ TODO mxm """ + + def __init__(self, state_stub, global_state_cache): + super(CachingGrpcStateHandler, self).__init__(state_stub) + self._state_cache = global_state_cache + + def blocking_get(self, state_key, coder): + cache_tokens = self._context.cache_tokens + if not cache_tokens: + # no cache tokens, can't do a lookup in the cache + return super(CachingGrpcStateHandler, self).blocking_get( + state_key, coder) + cache_state_key = CachingGrpcStateHandler.convert_to_cache_key(state_key) + value = self._state_cache.get(cache_state_key, cache_tokens) + if not value: + # Cache miss, need to retrieve from the Runner + value = super(CachingGrpcStateHandler, self).blocking_get( + state_key, coder) + # TODO mxm uses always the first cache token for now + self._state_cache.put( + CachingGrpcStateHandler.convert_to_cache_key(state_key), + cache_tokens[0], value) + return value + + def blocking_append(self, state_key, data): + cache_tokens = self._context.cache_tokens + self._state_cache.put( Review comment: With the new version, we don't return the token anymore on append/clear. ---------------------------------------------------------------- This is an automated message from the Apache Git Service. To respond to the message, please log on to GitHub and use the URL above to go to the specific comment. For queries about this service, please contact Infrastructure at: us...@infra.apache.org Issue Time Tracking ------------------- Worklog Id: (was: 303028) Time Spent: 10h (was: 9h 50m) > Implement cross-bundle state caching. > ------------------------------------- > > Key: BEAM-5428 > URL: https://issues.apache.org/jira/browse/BEAM-5428 > Project: Beam > Issue Type: Improvement > Components: sdk-py-harness > Reporter: Robert Bradshaw > Assignee: Rakesh Kumar > Priority: Major > Time Spent: 10h > Remaining Estimate: 0h > > Tech spec: > [https://docs.google.com/document/d/1BOozW0bzBuz4oHJEuZNDOHdzaV5Y56ix58Ozrqm2jFg/edit#heading=h.7ghoih5aig5m] > Relevant document: > [https://docs.google.com/document/d/1ltVqIW0XxUXI6grp17TgeyIybk3-nDF8a0-Nqw-s9mY/edit#|https://docs.google.com/document/d/1ltVqIW0XxUXI6grp17TgeyIybk3-nDF8a0-Nqw-s9mY/edit] > Mailing list link: > [https://lists.apache.org/thread.html/caa8d9bc6ca871d13de2c5e6ba07fdc76f85d26497d95d90893aa1f6@%3Cdev.beam.apache.org%3E] -- This message was sent by Atlassian Jira (v8.3.2#803003)