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[GitHub] [flink] cun8cun8 opened a new pull request #19328: [FLINK-26969][Examples] Write operation examples of tumbling window, sliding window, session window and count window based on pyflink
cun8cun8 opened a new pull request #19328:
URL: https://github.com/apache/flink/pull/19328
…sliding window, session window and count window based on pyflink
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[GitHub] [flink] flinkbot edited a comment on pull request #19328: [FLINK-26969][Examples] Write operation examples of tumbling window, sliding window, session window and count window based on pyflink
Posted by GitBox <gi...@apache.org>.
flinkbot edited a comment on pull request #19328:
URL: https://github.com/apache/flink/pull/19328#issuecomment-1085814902
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[GitHub] [flink] flinkbot edited a comment on pull request #19328: [FLINK-26969][Examples] Write operation examples of tumbling window, sliding window, session window and count window based on pyflink
Posted by GitBox <gi...@apache.org>.
flinkbot edited a comment on pull request #19328:
URL: https://github.com/apache/flink/pull/19328#issuecomment-1085814902
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[GitHub] [flink] flinkbot edited a comment on pull request #19328: [FLINK-26969][Examples] Write operation examples of tumbling window, sliding window, session window and count window based on pyflink
Posted by GitBox <gi...@apache.org>.
flinkbot edited a comment on pull request #19328:
URL: https://github.com/apache/flink/pull/19328#issuecomment-1085814902
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[GitHub] [flink] flinkbot commented on pull request #19328: [FLINK-26969][Examples] Write operation examples of tumbling window, sliding window, session window and count window based on pyflink
Posted by GitBox <gi...@apache.org>.
flinkbot commented on pull request #19328:
URL: https://github.com/apache/flink/pull/19328#issuecomment-1085814902
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[GitHub] [flink] flinkbot edited a comment on pull request #19328: [FLINK-26969][Examples] Write operation examples of tumbling window, sliding window, session window and count window based on pyflink
Posted by GitBox <gi...@apache.org>.
flinkbot edited a comment on pull request #19328:
URL: https://github.com/apache/flink/pull/19328#issuecomment-1085814902
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[GitHub] [flink] flinkbot edited a comment on pull request #19328: [FLINK-26969][Examples] Write operation examples of tumbling window, sliding window, session window and count window based on pyflink
Posted by GitBox <gi...@apache.org>.
flinkbot edited a comment on pull request #19328:
URL: https://github.com/apache/flink/pull/19328#issuecomment-1085814902
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[GitHub] [flink] flinkbot edited a comment on pull request #19328: [FLINK-26969][Examples] Write operation examples of tumbling window, sliding window, session window and count window based on pyflink
Posted by GitBox <gi...@apache.org>.
flinkbot edited a comment on pull request #19328:
URL: https://github.com/apache/flink/pull/19328#issuecomment-1085814902
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[GitHub] [flink] flinkbot edited a comment on pull request #19328: [FLINK-26969][Examples] Write operation examples of tumbling window, sliding window, session window and count window based on pyflink
Posted by GitBox <gi...@apache.org>.
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URL: https://github.com/apache/flink/pull/19328#issuecomment-1085814902
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[GitHub] [flink] flinkbot edited a comment on pull request #19328: [FLINK-26969][Examples] Write operation examples of tumbling window, sliding window, session window and count window based on pyflink
Posted by GitBox <gi...@apache.org>.
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URL: https://github.com/apache/flink/pull/19328#issuecomment-1085814902
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[GitHub] [flink] flinkbot edited a comment on pull request #19328: [FLINK-26969][Examples] Write operation examples of tumbling window, sliding window, session window and count window based on pyflink
Posted by GitBox <gi...@apache.org>.
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URL: https://github.com/apache/flink/pull/19328#issuecomment-1085814902
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[GitHub] [flink] flinkbot edited a comment on pull request #19328: [FLINK-26969][Examples] Write operation examples of tumbling window, sliding window, session window and count window based on pyflink
Posted by GitBox <gi...@apache.org>.
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[GitHub] [flink] dianfu commented on a change in pull request #19328: [FLINK-26969][Examples] Write operation examples of tumbling window, sliding window, session window and count window based on pyflink
Posted by GitBox <gi...@apache.org>.
dianfu commented on a change in pull request #19328:
URL: https://github.com/apache/flink/pull/19328#discussion_r840997492
##########
File path: flink-python/pyflink/examples/datastream/windowing/sliding_windowing.py
##########
@@ -0,0 +1,70 @@
+################################################################################
+# 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 logging
+import sys
+
+import argparse
+from typing import Iterable
+
+from pyflink.common import Types, WatermarkStrategy, Time
+from pyflink.common.watermark_strategy import TimestampAssigner
+from pyflink.datastream import StreamExecutionEnvironment, ProcessWindowFunction
+from pyflink.datastream.window import CountWindow, SlidingEventTimeWindows
+
+
+class TimestampAssigner(TimestampAssigner):
+ def extract_timestamp(self, value, record_timestamp) -> int:
+ return int(value[1])
+
+
+class CountWindowProcessFunction(ProcessWindowFunction[tuple, tuple, str, CountWindow]):
+ def process(self,
+ key: str,
+ content: ProcessWindowFunction.Context,
+ elements: Iterable[tuple]) -> Iterable[tuple]:
+ return [(key, len([e for e in elements]))]
+
+ def clear(self, context: ProcessWindowFunction.Context) -> None:
+ pass
+
+
+if __name__ == '__main__':
+ logging.basicConfig(stream=sys.stdout, level=logging.INFO, format="%(message)s")
+
+ parser = argparse.ArgumentParser()
+ parser.add_argument(
+ '--output',
+ dest='output',
+ required=False,
+ help='Output file to write results to.')
+
+ env = StreamExecutionEnvironment.get_execution_environment()
+ env.set_parallelism(1)
+ data_stream = env.from_collection([
+ ('hi', 1), ('hi', 2), ('hi', 3), ('hi', 4), ('hi', 5), ('hi', 8), ('hi', 9), ('hi', 15)],
+ type_info=Types.TUPLE([Types.STRING(), Types.INT()])) # type: DataStream
+ watermark_strategy = WatermarkStrategy.for_monotonous_timestamps() \
+ .with_timestamp_assigner(TimestampAssigner())
+
+ data_stream.assign_timestamps_and_watermarks(watermark_strategy) \
+ .key_by(lambda x: x[0], key_type=Types.STRING()) \
+ .window(SlidingEventTimeWindows.of(Time.milliseconds(5), Time.milliseconds(2), Time.seconds(0))) \
+ .process(CountWindowProcessFunction(), Types.TUPLE([Types.STRING(), Types.INT()])) \
Review comment:
What about also outputs the window start and window end to make the output more readable?
##########
File path: flink-python/pyflink/examples/datastream/windowing/count_windowing.py
##########
@@ -0,0 +1,57 @@
+################################################################################
+# 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 logging
+import sys
+
+import argparse
+from typing import Iterable
+
+from pyflink.common import Types
+from pyflink.datastream import StreamExecutionEnvironment, WindowFunction
+from pyflink.datastream.window import CountWindow
+
Review comment:
What about rename the file to count_window to keep the naming conversion consistent with the Table API examples?
##########
File path: flink-python/pyflink/examples/datastream/windowing/sliding_windowing.py
##########
@@ -0,0 +1,70 @@
+################################################################################
+# 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 logging
+import sys
+
+import argparse
+from typing import Iterable
+
+from pyflink.common import Types, WatermarkStrategy, Time
+from pyflink.common.watermark_strategy import TimestampAssigner
+from pyflink.datastream import StreamExecutionEnvironment, ProcessWindowFunction
+from pyflink.datastream.window import CountWindow, SlidingEventTimeWindows
+
+
+class TimestampAssigner(TimestampAssigner):
+ def extract_timestamp(self, value, record_timestamp) -> int:
+ return int(value[1])
+
+
+class CountWindowProcessFunction(ProcessWindowFunction[tuple, tuple, str, CountWindow]):
Review comment:
Why this is a CountWindow? Shouldn't it be a TimeWindow?
##########
File path: flink-python/pyflink/examples/datastream/windowing/tumbling_windowing.py
##########
@@ -0,0 +1,71 @@
+################################################################################
+# 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 logging
+import sys
+
+import argparse
+from typing import Iterable
+
+from pyflink.common import Types, WatermarkStrategy, Time
+from pyflink.common.watermark_strategy import TimestampAssigner
+from pyflink.datastream import StreamExecutionEnvironment, ProcessWindowFunction
+from pyflink.datastream.window import TumblingEventTimeWindows, CountWindow
+
+
+class TimestampAssigner(TimestampAssigner):
+ def extract_timestamp(self, value, record_timestamp) -> int:
+ return int(value[1])
+
+
+class CountWindowProcessFunction(ProcessWindowFunction[tuple, tuple, str, CountWindow]):
+ def process(self,
+ key: str,
+ content: ProcessWindowFunction.Context,
+ elements: Iterable[tuple]) -> Iterable[tuple]:
+ return [(key, len([e for e in elements]))]
+
+ def clear(self, context: ProcessWindowFunction.Context) -> None:
+ pass
+
+
+if __name__ == '__main__':
+ logging.basicConfig(stream=sys.stdout, level=logging.INFO, format="%(message)s")
+
+ parser = argparse.ArgumentParser()
+ parser.add_argument(
+ '--output',
+ dest='output',
+ required=False,
+ help='Output file to write results to.')
+
+ env = StreamExecutionEnvironment.get_execution_environment()
+ env.set_parallelism(1)
+
+ data_stream = env.from_collection([
+ ('hi', 1), ('hi', 2), ('hi', 3), ('hi', 4), ('hi', 5), ('hi', 8), ('hi', 9), ('hi', 15)],
+ type_info=Types.TUPLE([Types.STRING(), Types.INT()])) # type: DataStream
+
+ watermark_strategy = WatermarkStrategy.for_monotonous_timestamps() \
+ .with_timestamp_assigner(TimestampAssigner())
+ data_stream.assign_timestamps_and_watermarks(watermark_strategy) \
+ .key_by(lambda x: x[0], key_type=Types.STRING()) \
+ .window(TumblingEventTimeWindows.of(Time.milliseconds(5))) \
+ .process(CountWindowProcessFunction(), Types.TUPLE([Types.STRING(), Types.INT()])) \
Review comment:
What about also outputs the window start and window end to make the output more readable?
##########
File path: flink-python/pyflink/examples/datastream/windowing/tumbling_windowing.py
##########
@@ -0,0 +1,71 @@
+################################################################################
+# 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 logging
+import sys
+
+import argparse
+from typing import Iterable
+
+from pyflink.common import Types, WatermarkStrategy, Time
+from pyflink.common.watermark_strategy import TimestampAssigner
+from pyflink.datastream import StreamExecutionEnvironment, ProcessWindowFunction
+from pyflink.datastream.window import TumblingEventTimeWindows, CountWindow
+
+
+class TimestampAssigner(TimestampAssigner):
Review comment:
Give it a different name other than TimestampAssigner to avoid duplicate with the base class name?
##########
File path: flink-python/pyflink/examples/datastream/windowing/sliding_windowing.py
##########
@@ -0,0 +1,70 @@
+################################################################################
+# 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 logging
+import sys
+
+import argparse
+from typing import Iterable
+
+from pyflink.common import Types, WatermarkStrategy, Time
+from pyflink.common.watermark_strategy import TimestampAssigner
+from pyflink.datastream import StreamExecutionEnvironment, ProcessWindowFunction
+from pyflink.datastream.window import CountWindow, SlidingEventTimeWindows
+
+
+class TimestampAssigner(TimestampAssigner):
+ def extract_timestamp(self, value, record_timestamp) -> int:
+ return int(value[1])
+
+
+class CountWindowProcessFunction(ProcessWindowFunction[tuple, tuple, str, CountWindow]):
+ def process(self,
+ key: str,
+ content: ProcessWindowFunction.Context,
+ elements: Iterable[tuple]) -> Iterable[tuple]:
+ return [(key, len([e for e in elements]))]
+
+ def clear(self, context: ProcessWindowFunction.Context) -> None:
+ pass
+
+
+if __name__ == '__main__':
+ logging.basicConfig(stream=sys.stdout, level=logging.INFO, format="%(message)s")
+
+ parser = argparse.ArgumentParser()
+ parser.add_argument(
+ '--output',
+ dest='output',
+ required=False,
+ help='Output file to write results to.')
+
+ env = StreamExecutionEnvironment.get_execution_environment()
+ env.set_parallelism(1)
+ data_stream = env.from_collection([
+ ('hi', 1), ('hi', 2), ('hi', 3), ('hi', 4), ('hi', 5), ('hi', 8), ('hi', 9), ('hi', 15)],
+ type_info=Types.TUPLE([Types.STRING(), Types.INT()])) # type: DataStream
+ watermark_strategy = WatermarkStrategy.for_monotonous_timestamps() \
+ .with_timestamp_assigner(TimestampAssigner())
+
+ data_stream.assign_timestamps_and_watermarks(watermark_strategy) \
+ .key_by(lambda x: x[0], key_type=Types.STRING()) \
+ .window(SlidingEventTimeWindows.of(Time.milliseconds(5), Time.milliseconds(2), Time.seconds(0))) \
Review comment:
fix the check style
##########
File path: flink-python/pyflink/examples/datastream/windowing/sliding_windowing.py
##########
@@ -0,0 +1,70 @@
+################################################################################
+# 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 logging
+import sys
+
+import argparse
+from typing import Iterable
+
+from pyflink.common import Types, WatermarkStrategy, Time
+from pyflink.common.watermark_strategy import TimestampAssigner
+from pyflink.datastream import StreamExecutionEnvironment, ProcessWindowFunction
+from pyflink.datastream.window import CountWindow, SlidingEventTimeWindows
+
+
+class TimestampAssigner(TimestampAssigner):
+ def extract_timestamp(self, value, record_timestamp) -> int:
+ return int(value[1])
+
+
+class CountWindowProcessFunction(ProcessWindowFunction[tuple, tuple, str, CountWindow]):
+ def process(self,
+ key: str,
+ content: ProcessWindowFunction.Context,
Review comment:
```suggestion
context: ProcessWindowFunction.Context,
```
##########
File path: flink-python/pyflink/examples/datastream/windowing/count_windowing.py
##########
@@ -0,0 +1,57 @@
+################################################################################
+# 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 logging
+import sys
+
+import argparse
+from typing import Iterable
+
+from pyflink.common import Types
+from pyflink.datastream import StreamExecutionEnvironment, WindowFunction
+from pyflink.datastream.window import CountWindow
+
+
+class SumWindowFunction(WindowFunction[tuple, tuple, str, CountWindow]):
+ def apply(self, key: str, window: CountWindow, inputs: Iterable[tuple]):
+ result = 0
+ for i in inputs:
+ result += i[0]
+ return [(key, result)]
+
+
+if __name__ == '__main__':
+ logging.basicConfig(stream=sys.stdout, level=logging.INFO, format="%(message)s")
+
+ parser = argparse.ArgumentParser()
+ parser.add_argument(
Review comment:
Where this parameter is used?
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[GitHub] [flink] flinkbot edited a comment on pull request #19328: [FLINK-26969][Examples] Write operation examples of tumbling window, sliding window, session window and count window based on pyflink
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[GitHub] [flink] flinkbot edited a comment on pull request #19328: [FLINK-26969][Examples] Write operation examples of tumbling window, sliding window, session window and count window based on pyflink
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[GitHub] [flink] flinkbot edited a comment on pull request #19328: [FLINK-26969][Examples] Write operation examples of tumbling window, sliding window, session window and count window based on pyflink
Posted by GitBox <gi...@apache.org>.
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[GitHub] [flink] flinkbot edited a comment on pull request #19328: [FLINK-26969][Examples] Write operation examples of tumbling window, sliding window, session window and count window based on pyflink
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[GitHub] [flink] flinkbot edited a comment on pull request #19328: [FLINK-26969][Examples] Write operation examples of tumbling window, sliding window, session window and count window based on pyflink
Posted by GitBox <gi...@apache.org>.
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URL: https://github.com/apache/flink/pull/19328#issuecomment-1085814902
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[GitHub] [flink] flinkbot edited a comment on pull request #19328: [FLINK-26969][Examples] Write operation examples of tumbling window, sliding window, session window and count window based on pyflink
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[GitHub] [flink] dianfu closed pull request #19328: [FLINK-26969][Examples] Write operation examples of tumbling window, sliding window, session window and count window based on pyflink
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[GitHub] [flink] flinkbot edited a comment on pull request #19328: [FLINK-26969][Examples] Write operation examples of tumbling window, sliding window, session window and count window based on pyflink
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[GitHub] [flink] flinkbot edited a comment on pull request #19328: [FLINK-26969][Examples] Write operation examples of tumbling window, sliding window, session window and count window based on pyflink
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[GitHub] [flink] flinkbot edited a comment on pull request #19328: [FLINK-26969][Examples] Write operation examples of tumbling window, sliding window, session window and count window based on pyflink
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[GitHub] [flink] flinkbot edited a comment on pull request #19328: [FLINK-26969][Examples] Write operation examples of tumbling window, sliding window, session window and count window based on pyflink
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[GitHub] [flink] flinkbot edited a comment on pull request #19328: [FLINK-26969][Examples] Write operation examples of tumbling window, sliding window, session window and count window based on pyflink
Posted by GitBox <gi...@apache.org>.
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[GitHub] [flink] flinkbot edited a comment on pull request #19328: [FLINK-26969][Examples] Write operation examples of tumbling window, sliding window, session window and count window based on pyflink
Posted by GitBox <gi...@apache.org>.
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[GitHub] [flink] flinkbot edited a comment on pull request #19328: [FLINK-26969][Examples] Write operation examples of tumbling window, sliding window, session window and count window based on pyflink
Posted by GitBox <gi...@apache.org>.
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URL: https://github.com/apache/flink/pull/19328#issuecomment-1085814902
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[GitHub] [flink] flinkbot edited a comment on pull request #19328: [FLINK-26969][Examples] Write operation examples of tumbling window, sliding window, session window and count window based on pyflink
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