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https://issues.apache.org/jira/browse/BEAM-4006?focusedWorklogId=130033&page=com.atlassian.jira.plugin.system.issuetabpanels:worklog-tabpanel#worklog-130033
]
ASF GitHub Bot logged work on BEAM-4006:
----------------------------------------
Author: ASF GitHub Bot
Created on: 02/Aug/18 00:08
Start Date: 02/Aug/18 00:08
Worklog Time Spent: 10m
Work Description: tvalentyn commented on a change in pull request #5729:
[BEAM-4006] Futurize transforms subpackage
URL: https://github.com/apache/beam/pull/5729#discussion_r207068499
##########
File path: sdks/python/apache_beam/transforms/window.py
##########
@@ -246,10 +263,33 @@ def __init__(self, value, timestamp):
self.value = value
self.timestamp = Timestamp.of(timestamp)
- def __cmp__(self, other):
- if type(self) is not type(other):
- return cmp(type(self), type(other))
- return cmp((self.value, self.timestamp), (other.value, other.timestamp))
+ def __eq__(self, other):
Review comment:
I checked performance of `windowed_value`, `interval_window`,
`timestamped_value`, `bounded_window` in dictionaries and ordered lists, with
and without this PR. For the most part, performance is not changed or
improved. `@total_ordering` does not significantly affect it. Only concern is
using `hash(type(self))` when evaluating hashes of objects may be unnecessary
in most cases, and slightly decreases the performance here:
https://github.com/apache/beam/pull/5729/files#diff-d7dfd884622fb59806ba9276cf3bd8fbR242.
So I left some more comments to simplify hash functions. The change above was
also the trigger for test flakiness, although ultimately the test was at fault.
Without PR:
```
wv_with_one_window: dict, 10000 element(s) : per element median time
cost: 4.71699e-06 sec, relative std: 5.93%
wv_with_multiple_windows: dict, 10000 element(s): per element median time
cost: 4.02698e-05 sec, relative std: 0.60%
interval_window: dict, 10000 element(s) : per element median time
cost: 1.5276e-06 sec, relative std: 1.78%
timestamped_value: dict, 10000 element(s) : per element median time
cost: 1.39499e-07 sec, relative std: 7.44%
interval_window: sorting., 10000 element(s) : per element median time
cost: 4.04392e-05 sec, relative std: 0.63%
timestamped_value: sorting., 10000 element(s) : per element median time
cost: 1.80363e-05 sec, relative std: 1.35%
bounded_window: sorting., 10000 element(s) : per element median time
cost: 4.06633e-05 sec, relative std: 1.26%
```
With PR (including the change suggested in last iteration).
```
wv_with_one_window: dict, 10000 element(s) : per element median time
cost: 5.047e-06 sec, relative std: 2.16%
wv_with_multiple_windows: dict, 10000 element(s): per element median time
cost: 4.0575e-05 sec, relative std: 2.20%
interval_window: dict, 10000 element(s) : per element median time
cost: 1.53821e-06 sec, relative std: 2.43%
timestamped_value: dict, 10000 element(s) : per element median time
cost: 1.27995e-06 sec, relative std: 6.11%
interval_window: sorting., 10000 element(s) : per element median time
cost: 1.83087e-05 sec, relative std: 1.28%
timestamped_value: sorting., 10000 element(s) : per element median time
cost: 8.4375e-06 sec, relative std: 2.62%
bounded_window: sorting., 10000 element(s) : per element median time
cost: 1.80462e-05 sec, relative std: 3.56%
```
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Issue Time Tracking
-------------------
Worklog Id: (was: 130033)
Time Spent: 15.5h (was: 15h 20m)
> Futurize and fix python 2 compatibility for transforms subpackage
> -----------------------------------------------------------------
>
> Key: BEAM-4006
> URL: https://issues.apache.org/jira/browse/BEAM-4006
> Project: Beam
> Issue Type: Sub-task
> Components: sdk-py-core
> Reporter: Robbe
> Assignee: Matthias Feys
> Priority: Major
> Time Spent: 15.5h
> Remaining Estimate: 0h
>
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