[
https://issues.apache.org/jira/browse/BEAM-8547?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Kyle Weaver resolved BEAM-8547.
-------------------------------
Fix Version/s: Not applicable
Resolution: Won't Fix
Closing as "won't fix" because in general we can't support local filesystem
writes in a distributed environment. BEAM-5440 should address the case where we
want to simulate a distributed environment on a single machine.
> Portable Wordcount fails with on stadalone Flink cluster
> ---------------------------------------------------------
>
> Key: BEAM-8547
> URL: https://issues.apache.org/jira/browse/BEAM-8547
> Project: Beam
> Issue Type: Bug
> Components: runner-flink, sdk-py-harness
> Reporter: Valentyn Tymofieiev
> Assignee: Kyle Weaver
> Priority: P2
> Labels: stale-P2
> Fix For: Not applicable
>
>
> Repro:
> # git checkout origin/release-2.16.0
> # ./flink-1.8.2/bin/start-cluster.sh
> # gradlew :runners:flink:1.8:job-server:runShadow
> -PflinkMasterUrl=localhost:8081
> # python -m apache_beam.examples.wordcount --input=/etc/profile
> --output=/tmp/py-wordcount-direct --runner=PortableRunner
> --experiments=worker_threads=100 --parallelism=1
> --shutdown_sources_on_final_watermark --sdk_worker_parallelism=1
> --environment_cache_millis=60000 --job_endpoint=localhost:8099
> This causes the runner to crash with:
> {noformat}
> Traceback (most recent call last):
> File
> "/usr/local/lib/python3.7/site-packages/apache_beam/runners/worker/sdk_worker.py",
> line 158, in _execute
> response = task()
> File
> "/usr/local/lib/python3.7/site-packages/apache_beam/runners/worker/sdk_worker.py",
> line 191, in <lambda>
> self._execute(lambda: worker.do_instruction(work), work)
> File
> "/usr/local/lib/python3.7/site-packages/apache_beam/runners/worker/sdk_worker.py",
> line 343, in do_instruction
> request.instruction_id)
> File
> "/usr/local/lib/python3.7/site-packages/apache_beam/runners/worker/sdk_worker.py",
> line 369, in process_bundle
> bundle_processor.process_bundle(instruction_id))
> File
> "/usr/local/lib/python3.7/site-packages/apache_beam/runners/worker/bundle_processor.py",
> line 663, in process_bundle
> data.ptransform_id].process_encoded(data.data)
> File
> "/usr/local/lib/python3.7/site-packages/apache_beam/runners/worker/bundle_processor.py",
> line 143, in process_encoded
> self.output(decoded_value)
> File "apache_beam/runners/worker/operations.py", line 255, in
> apache_beam.runners.worker.operations.Operation.output
> File "apache_beam/runners/worker/operations.py", line 256, in
> apache_beam.runners.worker.operations.Operation.output
> File "apache_beam/runners/worker/operations.py", line 143, in
> apache_beam.runners.worker.operations.SingletonConsumerSet.receive
> File "apache_beam/runners/worker/operations.py", line 593, in
> apache_beam.runners.worker.operations.DoOperation.process
> File "apache_beam/runners/worker/operations.py", line 594, in
> apache_beam.runners.worker.operations.DoOperation.process
> File "apache_beam/runners/common.py", line 776, in
> apache_beam.runners.common.DoFnRunner.receive
> File "apache_beam/runners/common.py", line 782, in
> apache_beam.runners.common.DoFnRunner.process
> File "apache_beam/runners/common.py", line 849, in
> apache_beam.runners.common.DoFnRunner._reraise_augmented
> File "/usr/local/lib/python3.7/site-packages/future/utils/__init__.py",
> line 421, in raise_with_traceback
> raise exc.with_traceback(traceback)
> File "apache_beam/runners/common.py", line 780, in
> apache_beam.runners.common.DoFnRunner.process
> File "apache_beam/runners/common.py", line 587, in
> apache_beam.runners.common.PerWindowInvoker.invoke_process
> File "apache_beam/runners/common.py", line 660, in
> apache_beam.runners.common.PerWindowInvoker._invoke_process_per_window
> File "/usr/local/lib/python3.7/site-packages/apache_beam/io/iobase.py",
> line 1042, in process
> self.writer = self.sink.open_writer(init_result, str(uuid.uuid4()))
> File
> "/usr/local/lib/python3.7/site-packages/apache_beam/options/value_provider.py",
> line 137, in _f
> return fnc(self, *args, **kwargs)
> File
> "/usr/local/lib/python3.7/site-packages/apache_beam/io/filebasedsink.py",
> line 186, in open_writer
> return FileBasedSinkWriter(self, writer_path)
> File
> "/usr/local/lib/python3.7/site-packages/apache_beam/io/filebasedsink.py",
> line 390, in __init__
> self.temp_handle = self.sink.open(temp_shard_path)
> File "/usr/local/lib/python3.7/site-packages/apache_beam/io/textio.py",
> line 391, in open
> file_handle = super(_TextSink, self).open(temp_path)
> File
> "/usr/local/lib/python3.7/site-packages/apache_beam/options/value_provider.py",
> line 137, in _f
> return fnc(self, *args, **kwargs)
> File
> "/usr/local/lib/python3.7/site-packages/apache_beam/io/filebasedsink.py",
> line 129, in open
> return FileSystems.create(temp_path, self.mime_type,
> self.compression_type)
> File
> "/usr/local/lib/python3.7/site-packages/apache_beam/io/filesystems.py", line
> 203, in create
> return filesystem.create(path, mime_type, compression_type)
> File
> "/usr/local/lib/python3.7/site-packages/apache_beam/io/localfilesystem.py",
> line 151, in create
> return self._path_open(path, 'wb', mime_type, compression_type)
> File
> "/usr/local/lib/python3.7/site-packages/apache_beam/io/localfilesystem.py",
> line 134, in _path_open
> raw_file = open(path, mode)
> RuntimeError: FileNotFoundError: [Errno 2] No such file or directory:
> '/tmp/beam-temp-py-wordcount-direct-ea951c18fd1211e9ac84a0c589d778c3/d39e13af-277b-437e-89f2-e00249287e1d.py-wordcount-direct'
> [while running 'write/Write/WriteImpl/WriteBundles'] {noformat}
> The error happens with Flink 1.5 and Flink 1.8.
> The error does not happen if we run SDK harness in LOOPBACK mode
> (--environment_type=LOOPBACK)
> The error does not happen if we launch Flink jobServer without pointing to a
> Flink cluster, that is if we remove -PflinkMasterUrl=localhost:8081, or if we
> use Spark Jobserver + Spark cluster, so this seems to be a Flink-specific
> problem
> Similar error: https://issues.apache.org/jira/browse/BEAM-7859
> Note that default parallelism parameters set in portableWordCountBatch are
> not compatible with default configuration of standalone Flink cluster, which
> starts with only one available slot.
> cc: [~ibzib] [~goenka] [~robertwb]
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