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Posted to issues@flink.apache.org by GitBox <gi...@apache.org> on 2021/01/30 05:42:34 UTC
[GitHub] [flink] HuangXingBo opened a new pull request #14816: [FLINK-21202][python] Introduce TimeWindow and CountWindow in PyFlink
HuangXingBo opened a new pull request #14816:
URL: https://github.com/apache/flink/pull/14816
## What is the purpose of the change
*This pull request will Introduce TimeWindow, CountWindow and corresponding coders.*
## Brief change log
- *Add `TimeWindow` and `CountWindow`*
- *Add coders and implementation of `TimeWindowCoder` and `CountWindowCoder`*
## Verifying this change
This change added tests and can be verified as follows:
- *Add python coder test in `test_coders.py`*
- *Add cython coder test in `test_fast_coders.py`*
## Does this pull request potentially affect one of the following parts:
- Dependencies (does it add or upgrade a dependency): (no)
- The public API, i.e., is any changed class annotated with `@Public(Evolving)`: (no)
- The serializers: (no)
- The runtime per-record code paths (performance sensitive): (no)
- Anything that affects deployment or recovery: JobManager (and its components), Checkpointing, Kubernetes/Yarn/Mesos, ZooKeeper: (no)
- The S3 file system connector: (no)
## Documentation
- Does this pull request introduce a new feature? (no)
- If yes, how is the feature documented? (not applicable)
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[GitHub] [flink] flinkbot edited a comment on pull request #14816: [FLINK-21202][python] Introduce TimeWindow and CountWindow in PyFlink
Posted by GitBox <gi...@apache.org>.
flinkbot edited a comment on pull request #14816:
URL: https://github.com/apache/flink/pull/14816#issuecomment-770164177
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## CI report:
* daece76bc00e4dd9aab27b59c16fd67d57cc24d6 Azure: [SUCCESS](https://dev.azure.com/apache-flink/98463496-1af2-4620-8eab-a2ecc1a2e6fe/_build/results?buildId=12690)
* 8e01d37ab94d0b54c3e0fb1bc4d643036145042d Azure: [PENDING](https://dev.azure.com/apache-flink/98463496-1af2-4620-8eab-a2ecc1a2e6fe/_build/results?buildId=13694)
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[GitHub] [flink] flinkbot edited a comment on pull request #14816: [FLINK-21202][python] Introduce TimeWindow and CountWindow in PyFlink
Posted by GitBox <gi...@apache.org>.
flinkbot edited a comment on pull request #14816:
URL: https://github.com/apache/flink/pull/14816#issuecomment-770164177
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## CI report:
* 8e01d37ab94d0b54c3e0fb1bc4d643036145042d Azure: [FAILURE](https://dev.azure.com/apache-flink/98463496-1af2-4620-8eab-a2ecc1a2e6fe/_build/results?buildId=13694)
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[GitHub] [flink] flinkbot edited a comment on pull request #14816: [FLINK-21202][python] Introduce TimeWindow and CountWindow in PyFlink
Posted by GitBox <gi...@apache.org>.
flinkbot edited a comment on pull request #14816:
URL: https://github.com/apache/flink/pull/14816#issuecomment-770164177
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## CI report:
* bc222cffd760e24ee61008fc45575ae3fce78506 Azure: [FAILURE](https://dev.azure.com/apache-flink/98463496-1af2-4620-8eab-a2ecc1a2e6fe/_build/results?buildId=13964)
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[GitHub] [flink] WeiZhong94 commented on a change in pull request #14816: [FLINK-21202][python] Introduce TimeWindow and CountWindow in PyFlink
Posted by GitBox <gi...@apache.org>.
WeiZhong94 commented on a change in pull request #14816:
URL: https://github.com/apache/flink/pull/14816#discussion_r584725808
##########
File path: flink-python/pyflink/fn_execution/window.py
##########
@@ -0,0 +1,126 @@
+################################################################################
+# 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.
+################################################################################
+import sys
+from abc import ABC, abstractmethod
+
+MAX_LONG_VALUE = sys.maxsize
+
+
+def long_to_int_with_bit_mixing(x: int) -> int:
+ x = (x ^ (x >> 30)) * 0xbf58476d1ce4e5b9
+ x = (x ^ (x >> 27)) * 0x94d049bb133111eb
+ x = x ^ (x >> 31)
+ return x
+
+
+def mod_inverse(x: int) -> int:
+ inverse = x * x * x
+ inverse *= 2 - x * inverse
+ inverse *= 2 - x * inverse
+ inverse *= 2 - x * inverse
+ return inverse
+
+
+class Window(ABC):
+ """
+ Window is a grouping of elements into finite buckets. Windows have a maximum timestamp
+ which means that, at some point, all elements that go into one window will have arrived.
+ """
+
+ @abstractmethod
+ def max_timestamp(self) -> int:
+ pass
+
+
+class TimeWindow(Window):
+ """
+ Window that represents a time interval from start (inclusive) to end (exclusive).
+ """
+
+ def __init__(self, start: int, end: int):
+ super(TimeWindow, self).__init__()
+ self.start = start
+ self.end = end
+
+ def max_timestamp(self) -> int:
+ return self.end - 1
+
+ def intersects(self, other: 'TimeWindow') -> bool:
+ """
+ Returns True if this window intersects the given window.
+ """
+ return self.start <= other.end and self.end >= other.start
+
+ def cover(self, other: 'TimeWindow') -> 'TimeWindow':
+ """
+ Returns the minimal window covers both this window and the given window.
+ """
+ return TimeWindow(min(self.start, other.start), max(self.end, other.end))
+
+ @staticmethod
+ def get_window_start_with_offset(timestamp: int, offset: int, window_size: int):
+ """
+ Method to get the window start for a timestamp.
Review comment:
Leaving a blank line between the description and parameters will be more readable
##########
File path: flink-python/pyflink/fn_execution/coder_impl_fast.pyx
##########
@@ -811,6 +813,42 @@ cdef class FlattenRowCoderImpl(BaseCoderImpl):
if self._field_coder_type:
free(self._field_coder_type)
+cdef class WindowCoderImpl(BaseCoderImpl):
+ def __init__(self):
+ self._tmp_output_pos = 0
+ self._tmp_output_data = <char*> malloc(16)
+
+ cpdef bytes encode_nested(self, value):
+ pass
+
+ cdef void _encode_bigint(self, libc.stdint.int64_t v):
+ self._tmp_output_data[self._tmp_output_pos] = <unsigned char> (v >> 56)
+ self._tmp_output_data[self._tmp_output_pos + 1] = <unsigned char> (v >> 48)
+ self._tmp_output_data[self._tmp_output_pos + 2] = <unsigned char> (v >> 40)
+ self._tmp_output_data[self._tmp_output_pos + 3] = <unsigned char> (v >> 32)
+ self._tmp_output_data[self._tmp_output_pos + 4] = <unsigned char> (v >> 24)
+ self._tmp_output_data[self._tmp_output_pos + 5] = <unsigned char> (v >> 16)
+ self._tmp_output_data[self._tmp_output_pos + 6] = <unsigned char> (v >> 8)
+ self._tmp_output_data[self._tmp_output_pos + 7] = <unsigned char> v
+ self._tmp_output_pos += 8
+
+ def __dealloc__(self):
+ if self._tmp_output_data:
+ free(self._tmp_output_data)
+
+cdef class TimeWindowCoderImpl(WindowCoderImpl):
+
Review comment:
Unnecessary blank line
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[GitHub] [flink] flinkbot commented on pull request #14816: [FLINK-21202][python] Introduce TimeWindow and CountWindow in PyFlink
Posted by GitBox <gi...@apache.org>.
flinkbot commented on pull request #14816:
URL: https://github.com/apache/flink/pull/14816#issuecomment-770162262
Thanks a lot for your contribution to the Apache Flink project. I'm the @flinkbot. I help the community
to review your pull request. We will use this comment to track the progress of the review.
## Automated Checks
Last check on commit daece76bc00e4dd9aab27b59c16fd67d57cc24d6 (Sat Jan 30 05:43:59 UTC 2021)
**Warnings:**
* No documentation files were touched! Remember to keep the Flink docs up to date!
* **This pull request references an unassigned [Jira ticket](https://issues.apache.org/jira/browse/FLINK-21202).** According to the [code contribution guide](https://flink.apache.org/contributing/contribute-code.html), tickets need to be assigned before starting with the implementation work.
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## Review Progress
* ❓ 1. The [description] looks good.
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* ❓ 4. The change fits into the overall [architecture].
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[GitHub] [flink] flinkbot edited a comment on pull request #14816: [FLINK-21202][python] Introduce TimeWindow and CountWindow in PyFlink
Posted by GitBox <gi...@apache.org>.
flinkbot edited a comment on pull request #14816:
URL: https://github.com/apache/flink/pull/14816#issuecomment-770164177
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## CI report:
* daece76bc00e4dd9aab27b59c16fd67d57cc24d6 Azure: [SUCCESS](https://dev.azure.com/apache-flink/98463496-1af2-4620-8eab-a2ecc1a2e6fe/_build/results?buildId=12690)
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[GitHub] [flink] HuangXingBo closed pull request #14816: [FLINK-21202][python] Introduce TimeWindow and CountWindow in PyFlink
Posted by GitBox <gi...@apache.org>.
HuangXingBo closed pull request #14816:
URL: https://github.com/apache/flink/pull/14816
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[GitHub] [flink] HuangXingBo commented on pull request #14816: [FLINK-21202][python] Introduce TimeWindow and CountWindow in PyFlink
Posted by GitBox <gi...@apache.org>.
HuangXingBo commented on pull request #14816:
URL: https://github.com/apache/flink/pull/14816#issuecomment-788723342
The failed test has been reported in [FLINK-21519](https://issues.apache.org/jira/browse/FLINK-21519) which is not relevant to this PR. I will merge it first.
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[GitHub] [flink] flinkbot edited a comment on pull request #14816: [FLINK-21202][python] Introduce TimeWindow and CountWindow in PyFlink
Posted by GitBox <gi...@apache.org>.
flinkbot edited a comment on pull request #14816:
URL: https://github.com/apache/flink/pull/14816#issuecomment-770164177
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## CI report:
* 8e01d37ab94d0b54c3e0fb1bc4d643036145042d Azure: [FAILURE](https://dev.azure.com/apache-flink/98463496-1af2-4620-8eab-a2ecc1a2e6fe/_build/results?buildId=13694)
* bc222cffd760e24ee61008fc45575ae3fce78506 UNKNOWN
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[GitHub] [flink] flinkbot edited a comment on pull request #14816: [FLINK-21202][python] Introduce TimeWindow and CountWindow in PyFlink
Posted by GitBox <gi...@apache.org>.
flinkbot edited a comment on pull request #14816:
URL: https://github.com/apache/flink/pull/14816#issuecomment-770164177
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## CI report:
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[GitHub] [flink] flinkbot commented on pull request #14816: [FLINK-21202][python] Introduce TimeWindow and CountWindow in PyFlink
Posted by GitBox <gi...@apache.org>.
flinkbot commented on pull request #14816:
URL: https://github.com/apache/flink/pull/14816#issuecomment-770164177
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[GitHub] [flink] flinkbot edited a comment on pull request #14816: [FLINK-21202][python] Introduce TimeWindow and CountWindow in PyFlink
Posted by GitBox <gi...@apache.org>.
flinkbot edited a comment on pull request #14816:
URL: https://github.com/apache/flink/pull/14816#issuecomment-770164177
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[GitHub] [flink] flinkbot edited a comment on pull request #14816: [FLINK-21202][python] Introduce TimeWindow and CountWindow in PyFlink
Posted by GitBox <gi...@apache.org>.
flinkbot edited a comment on pull request #14816:
URL: https://github.com/apache/flink/pull/14816#issuecomment-770164177
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