RE: Processing data from Kafka. Python
It seems to be fixed by adding option to Java expansion service:
"--experiments=use_deprecated_read"
I have found connected ticket: https://issues.apache.org/jira/browse/BEAM-11991
Best regards,
Stanislav Porotikov
From: Поротиков Станислав Вячеславович via user
Sent: Tuesday, December 19, 2023 1:58 PM
To: user@beam.apache.org
Cc: Поротиков Станислав Вячеславович
Subject: Processing data from Kafka. Python
I'm trying to read data from Kafka, make some processing and then write new
data to another Kafka topic.
The problem is that task is probably stucked on the processing stage.
In the logs I can see it reads data from kafka constantly. But no new data
appears in the sink Kafka topic
Could you help me, what I did wrong?
My pipeline:
pipeline_flink_environment = [
"--runner=FlinkRunner",
"--flink_submit_uber_jar",
"--streaming",
"--flink_master=localhost:8081",
"--environment_type=PROCESS",
"--environment_config={\"command\":\"/opt/apache/beam/boot\"}"
]
def run():
pipeline_options = PipelineOptions(pipeline_flink_environment)
with beam.Pipeline(options=pipeline_options) as pipeline:
kafka_message = (
pipeline
| 'Read topic from Kafka' >>
ReadFromKafka(consumer_config=source_config,
topics=[source_topic],
expansion_service=kafka_process_expansion_service
)
| beam.WindowInto(beam.window.FixedWindows(15))
| 'Group elements' >> beam.GroupByKey()
| 'Write data to Kafka' >>
WriteToKafka(producer_config=source_config,
topic=sink_topic,
expansion_service=kafka_process_expansion_service
)
)
if __name__ == '__main__':
logging.getLogger().setLevel(logging.INFO)
run()
Just few lines of logs, I can see, connected to python worker:
2023-12-19 08:18:04,634 INFO
org.apache.flink.runtime.taskexecutor.TaskExecutor [] -
Un-registering task and sending final execution state FINISHED to JobManager
for task Source: Impulse -> [3]Read topic from
Kafka/KafkaIO.Read/KafkaIO.Read.ReadFromKafkaViaSDF/{ParDo(GenerateKafkaSourceDescriptor),
KafkaIO.ReadSourceDescriptors} (1/1)#0
856b8acfe73098d7075a2636a645f66d_cbc357ccb763df2852fee8c4fc7d55f2_0_0.
2023-12-19 08:18:05,581 INFO
org.apache.beam.runners.fnexecution.logging.GrpcLoggingService [] - Beam Fn
Logging client connected.
2023-12-19 08:18:05,626 WARN
/usr/local/lib/python3.9/site-packages/apache_beam/options/pipeline_options.py:291
[] - Not setting flag with value None: app_name
2023-12-19 08:18:05,627 WARN
/usr/local/lib/python3.9/site-packages/apache_beam/options/pipeline_options.py:291
[] - Not setting flag with value None: flink_conf_dir
2023-12-19 08:18:05,628 INFO
/usr/local/lib/python3.9/site-packages/apache_beam/runners/worker/sdk_worker_main.py:111
[] - semi_persistent_directory: /tmp
2023-12-19 08:18:05,628 WARN
/usr/local/lib/python3.9/site-packages/apache_beam/runners/worker/sdk_worker_main.py:356
[] - No session file found: /tmp/staged/pickled_main_session. Functions
defined in __main__ (interactive session) may fail.
2023-12-19 08:18:05,629 WARN
/usr/local/lib/python3.9/site-packages/apache_beam/options/pipeline_options.py:367
[] - Discarding unparseable args: ['--direct_runner_use_stacked_bundle',
'--options_id=1', '--pipeline_type_check']
2023-12-19 08:18:05,629 INFO
/usr/local/lib/python3.9/site-packages/apache_beam/runners/worker/sdk_worker_main.py:135
[] - Pipeline_options: {'streaming': True, 'job_name':
'BeamApp-flink-1219081730-11566b15', 'gcp_oauth_scopes':
['https://www.googleapis.com/auth/bigquery',
'https://www.googleapis.com/auth/cloud-platform',
'https://www.googleapis.com/auth/devstorage.full_control',
'https://www.googleapis.com/auth/userinfo.email',
'https://www.googleapis.com/auth/datastore',
'https://www.googleapis.com/auth/spanner.admin',
'https://www.googleapis.com/auth/spanner.data',
'https://www.googleapis.com/auth/bigquery',
'https://www.googleapis.com/auth/cloud-platform',
'https://www.googleapis.com/auth/devstorage.full_control',
'https://www.googleapis.com/auth/userinfo.email',
'https://www.googleapis.com/auth/datastore',
'https://www.googleapis.com/auth/spanner.admin',
'https://www.googleapis.com/auth/spanner.data'],
'default_sdk_harness_log_level': 'DEBUG', 'experiments': ['beam_fn_api'],
'sdk_location': 'container', 'environment_type': 'PROCESS',
'environment_config': '{"command":"/opt/apache/beam/boot&quo
Processing data from Kafka. Python
I'm trying to read data from Kafka, make some processing and then write new
data to another Kafka topic.
The problem is that task is probably stucked on the processing stage.
In the logs I can see it reads data from kafka constantly. But no new data
appears in the sink Kafka topic
Could you help me, what I did wrong?
My pipeline:
pipeline_flink_environment = [
"--runner=FlinkRunner",
"--flink_submit_uber_jar",
"--streaming",
"--flink_master=localhost:8081",
"--environment_type=PROCESS",
"--environment_config={\"command\":\"/opt/apache/beam/boot\"}"
]
def run():
pipeline_options = PipelineOptions(pipeline_flink_environment)
with beam.Pipeline(options=pipeline_options) as pipeline:
kafka_message = (
pipeline
| 'Read topic from Kafka' >>
ReadFromKafka(consumer_config=source_config,
topics=[source_topic],
expansion_service=kafka_process_expansion_service
)
| beam.WindowInto(beam.window.FixedWindows(15))
| 'Group elements' >> beam.GroupByKey()
| 'Write data to Kafka' >>
WriteToKafka(producer_config=source_config,
topic=sink_topic,
expansion_service=kafka_process_expansion_service
)
)
if __name__ == '__main__':
logging.getLogger().setLevel(logging.INFO)
run()
Just few lines of logs, I can see, connected to python worker:
2023-12-19 08:18:04,634 INFO
org.apache.flink.runtime.taskexecutor.TaskExecutor [] -
Un-registering task and sending final execution state FINISHED to JobManager
for task Source: Impulse -> [3]Read topic from
Kafka/KafkaIO.Read/KafkaIO.Read.ReadFromKafkaViaSDF/{ParDo(GenerateKafkaSourceDescriptor),
KafkaIO.ReadSourceDescriptors} (1/1)#0
856b8acfe73098d7075a2636a645f66d_cbc357ccb763df2852fee8c4fc7d55f2_0_0.
2023-12-19 08:18:05,581 INFO
org.apache.beam.runners.fnexecution.logging.GrpcLoggingService [] - Beam Fn
Logging client connected.
2023-12-19 08:18:05,626 WARN
/usr/local/lib/python3.9/site-packages/apache_beam/options/pipeline_options.py:291
[] - Not setting flag with value None: app_name
2023-12-19 08:18:05,627 WARN
/usr/local/lib/python3.9/site-packages/apache_beam/options/pipeline_options.py:291
[] - Not setting flag with value None: flink_conf_dir
2023-12-19 08:18:05,628 INFO
/usr/local/lib/python3.9/site-packages/apache_beam/runners/worker/sdk_worker_main.py:111
[] - semi_persistent_directory: /tmp
2023-12-19 08:18:05,628 WARN
/usr/local/lib/python3.9/site-packages/apache_beam/runners/worker/sdk_worker_main.py:356
[] - No session file found: /tmp/staged/pickled_main_session. Functions
defined in __main__ (interactive session) may fail.
2023-12-19 08:18:05,629 WARN
/usr/local/lib/python3.9/site-packages/apache_beam/options/pipeline_options.py:367
[] - Discarding unparseable args: ['--direct_runner_use_stacked_bundle',
'--options_id=1', '--pipeline_type_check']
2023-12-19 08:18:05,629 INFO
/usr/local/lib/python3.9/site-packages/apache_beam/runners/worker/sdk_worker_main.py:135
[] - Pipeline_options: {'streaming': True, 'job_name':
'BeamApp-flink-1219081730-11566b15', 'gcp_oauth_scopes':
['https://www.googleapis.com/auth/bigquery',
'https://www.googleapis.com/auth/cloud-platform',
'https://www.googleapis.com/auth/devstorage.full_control',
'https://www.googleapis.com/auth/userinfo.email',
'https://www.googleapis.com/auth/datastore',
'https://www.googleapis.com/auth/spanner.admin',
'https://www.googleapis.com/auth/spanner.data',
'https://www.googleapis.com/auth/bigquery',
'https://www.googleapis.com/auth/cloud-platform',
'https://www.googleapis.com/auth/devstorage.full_control',
'https://www.googleapis.com/auth/userinfo.email',
'https://www.googleapis.com/auth/datastore',
'https://www.googleapis.com/auth/spanner.admin',
'https://www.googleapis.com/auth/spanner.data'],
'default_sdk_harness_log_level': 'DEBUG', 'experiments': ['beam_fn_api'],
'sdk_location': 'container', 'environment_type': 'PROCESS',
'environment_config': '{"command":"/opt/apache/beam/boot"}',
'sdk_worker_parallelism': '1', 'environment_cache_millis': '0',
'flink_submit_uber_jar': True}
2023-12-19 08:18:05,672 INFO
/usr/local/lib/python3.9/site-packages/apache_beam/runners/worker/statecache.py:234
[] - Creating state cache with size 104857600
2023-12-19 08:18:05,672 INFO
/usr/local/lib/python3.9/site-packages/apache_beam/runners/worker/sdk_worker.py:187
[] - Creating insecure control channel for localhost:35427.
2023-12-19 08:18:05,679 INFO
