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https://issues.apache.org/jira/browse/BEAM-12388?focusedWorklogId=622794&page=com.atlassian.jira.plugin.system.issuetabpanels:worklog-tabpanel#worklog-622794
]
ASF GitHub Bot logged work on BEAM-12388:
-----------------------------------------
Author: ASF GitHub Bot
Created on: 14/Jul/21 23:40
Start Date: 14/Jul/21 23:40
Worklog Time Spent: 10m
Work Description: rohdesamuel commented on a change in pull request
#15146:
URL: https://github.com/apache/beam/pull/15146#discussion_r670023732
##########
File path:
sdks/python/apache_beam/runners/interactive/caching/expression_cache.py
##########
@@ -0,0 +1,90 @@
+#
+# Licensed to the Apache Software Foundation (ASF) under one or more
+# contributor license agreements. See the NOTICE file distributed with
+# this work for additional information regarding copyright ownership.
+# The ASF licenses this file to You under the Apache License, Version 2.0
+# (the "License"); you may not use this file except in compliance with
+# the License. You may obtain a copy of the License at
+#
+# http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+from typing import *
+
+import apache_beam as beam
+from apache_beam.dataframe import convert
+from apache_beam.dataframe import expressions
+
+
+class ExpressionCache(object):
Review comment:
Added a comment to answer your questions here. My personal style is to
not have constructors do too much work, so I kept the `replace_with_cached`
where it is. The lifecycle is temporary and the only side-effects are in the
modified expression. The cache isn't persisted between multiple runs, it just
uses existing caches from the dataframe and interactive modules.
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Issue Time Tracking
-------------------
Worklog Id: (was: 622794)
Time Spent: 1h 50m (was: 1h 40m)
> Improve caching experience on InteractiveRunner with dataframes
> ---------------------------------------------------------------
>
> Key: BEAM-12388
> URL: https://issues.apache.org/jira/browse/BEAM-12388
> Project: Beam
> Issue Type: Improvement
> Components: runner-py-interactive
> Reporter: Sam Rohde
> Assignee: Sam Rohde
> Priority: P2
> Time Spent: 1h 50m
> Remaining Estimate: 0h
>
> Reusing the default label for to_pcollection when using the interactive
> runner results in caching errors when used with multiple pipelines:
>
>
> {{Traceback (most recent call last):
> File
> "/home/srohde/Workdir/beam/sdks/python/apache_beam/runners/interactive/interactive_runner_test.py",
> line 389, in test_dataframes_with_multi_index_get_result
> pd.testing.assert_series_equal(df_expected, ib.collect(deferred_df, n=10))
> File
> "/home/srohde/Workdir/beam/sdks/python/apache_beam/runners/interactive/utils.py",
> line 247, in run_within_progress_indicator
> return func(*args, **kwargs)
> File
> "/home/srohde/Workdir/beam/sdks/python/apache_beam/runners/interactive/interactive_beam.py",
> line 579, in collect
> recording = recording_manager.record([pcoll], max_n=n,
> max_duration=duration)
> File
> "/home/srohde/Workdir/beam/sdks/python/apache_beam/runners/interactive/recording_manager.py",
> line 433, in record
> self._watch(pcolls)
> File
> "/home/srohde/Workdir/beam/sdks/python/apache_beam/runners/interactive/recording_manager.py",
> line 306, in _watch
> for pcoll in to_pcollection(*watched_dataframes,
> always_return_tuple=True):
> File
> "/home/srohde/Workdir/beam/sdks/python/apache_beam/dataframe/convert.py",
> line 196, in to_pcollection
> new_results = {p: extract_input(p)
> File
> "/home/srohde/Workdir/beam/sdks/python/apache_beam/transforms/ptransform.py",
> line 1086, in __ror__
> return self.transform.__ror__(pvalueish, self.label)
> File
> "/home/srohde/Workdir/beam/sdks/python/apache_beam/transforms/ptransform.py",
> line 587, in __ror__
> raise ValueError(
> ValueError: Mixing value from different pipelines not allowed.}}
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