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https://issues.apache.org/jira/browse/BEAM-5428?focusedWorklogId=320027&page=com.atlassian.jira.plugin.system.issuetabpanels:worklog-tabpanel#worklog-320027
 ]

ASF GitHub Bot logged work on BEAM-5428:
----------------------------------------

                Author: ASF GitHub Bot
            Created on: 28/Sep/19 16:03
            Start Date: 28/Sep/19 16:03
    Worklog Time Spent: 10m 
      Work Description: tweise 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_r329315665
 
 

 ##########
 File path: sdks/python/apache_beam/runners/worker/bundle_processor.py
 ##########
 @@ -199,26 +199,19 @@ def finish(self):
 
 
 class _StateBackedIterable(object):
-  def __init__(self, state_handler, state_key, coder_or_impl):
+  def __init__(self, state_handler, state_key, coder_or_impl,
+               is_cached=False):
     self._state_handler = state_handler
     self._state_key = state_key
     if isinstance(coder_or_impl, coders.Coder):
       self._coder_impl = coder_or_impl.get_impl()
     else:
       self._coder_impl = coder_or_impl
+    self._is_cached = is_cached
 
   def __iter__(self):
-    # This is the continuation token this might be useful
-    data, continuation_token = 
self._state_handler.blocking_get(self._state_key)
-    while True:
-      input_stream = coder_impl.create_InputStream(data)
-      while input_stream.size() > 0:
-        yield self._coder_impl.decode_from_stream(input_stream, True)
-      if not continuation_token:
-        break
-      else:
-        data, continuation_token = self._state_handler.blocking_get(
-            self._state_key, continuation_token)
+    return self._state_handler.blocking_get(
 
 Review comment:
   The code that is removed keeps fetching the state until there is no token. 
My question was what the replacement for this is? If you are saying that there 
was no need for it in first place because there is no support on the runner 
side, then that's OK. It might be appropriate to capture this and the question 
raised by Robert in a comment and/or link to the appropriate JIRA.
 
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Issue Time Tracking
-------------------

    Worklog Id:     (was: 320027)
    Time Spent: 26h  (was: 25h 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: 26h
>  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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