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https://issues.apache.org/jira/browse/BEAM-5428?focusedWorklogId=316715&page=com.atlassian.jira.plugin.system.issuetabpanels:worklog-tabpanel#worklog-316715
]
ASF GitHub Bot logged work on BEAM-5428:
----------------------------------------
Author: ASF GitHub Bot
Created on: 23/Sep/19 14:29
Start Date: 23/Sep/19 14:29
Worklog Time Spent: 10m
Work Description: mxm commented on pull request #9418: [BEAM-5428]
Implement cross-bundle user state caching in the Python SDK
URL: https://github.com/apache/beam/pull/9418#discussion_r327147182
##########
File path: sdks/python/apache_beam/runners/worker/sdk_worker.py
##########
@@ -620,6 +628,106 @@ def _next_id(self):
return str(self._last_id)
+class CachingMaterializingStateHandler(object):
+ """ A State handler which retrieves and caches state. """
+
+ def __init__(self, global_state_cache, underlying_state):
+ self._underlying = underlying_state
+ self._state_cache = global_state_cache
+ self._context = threading.local()
+
+ @contextlib.contextmanager
+ def process_instruction_id(self, bundle_id, cache_tokens):
+ if getattr(self._context, 'cache_token', None) is not None:
+ raise RuntimeError(
+ 'Cache tokens already set to %s' % self._context.cache_token)
+ # TODO Also handle cache tokens for side input, if present
Review comment:
https://issues.apache.org/jira/browse/BEAM-8298
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Issue Time Tracking
-------------------
Worklog Id: (was: 316715)
Time Spent: 19h (was: 18h 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: Maximilian Michels
> Priority: Major
> Time Spent: 19h
> 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]
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