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https://issues.apache.org/jira/browse/BEAM-8591?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Kyle Weaver resolved BEAM-8591.
-------------------------------
Fix Version/s: Not applicable
Resolution: Not A Problem
> Exception is thrown while running Beam Pipeline on Kubernetes Flink Cluster.
> ----------------------------------------------------------------------------
>
> Key: BEAM-8591
> URL: https://issues.apache.org/jira/browse/BEAM-8591
> Project: Beam
> Issue Type: Bug
> Components: runner-flink
> Reporter: Mingliang Gong
> Assignee: Kyle Weaver
> Priority: Major
> Fix For: Not applicable
>
>
> h2. Setup Clusters
> * Setup Local Flink Cluster:
> [https://ci.apache.org/projects/flink/flink-docs-release-1.8/tutorials/local_setup.html]
> * Setup Kubernetes Flink Cluster using Minikube:
> [https://ci.apache.org/projects/flink/flink-docs-release-1.8/ops/deployment/kubernetes.html]
> h2. Verify Clusters
> Execute command “./bin/flink run examples/streaming/WordCount.jar”. Both
> Local and K8S Flink Cluster work fine.
> h2. Using Apache Beam Flink Runner
> Instruction: [https://beam.apache.org/documentation/runners/flink/]
> Sample Pipeline Code:
> {code:java}
> import apache_beam as beam
> from apache_beam.options.pipeline_options import PipelineOptions
> options = PipelineOptions([
> "--runner=PortableRunner",
> "--job_endpoint=localhost:8099",
> "--environment_type=LOOPBACK"
> ])
> with beam.Pipeline(options=options) as pipeline:
> data = ["Sample data",
> "Sample data - 0",
> "Sample data - 1"]
> raw_data = (pipeline
> | 'CreateHardCodeData' >> beam.Create(data)
> | 'Map' >> beam.Map(lambda line : line + '.')
> | 'Print' >> beam.Map(print)){code}
> Verify different environment_type in Python SDK Harness Configuration
> *environment_type=LOOPBACK*
> # Run pipeline on local cluster: Works Fine
> # Run pipeline on K8S cluster, Exceptions are thrown:
> java.lang.Exception: The user defined 'open()' method caused an exception:
> org.apache.beam.vendor.grpc.v1p21p0.io.grpc.StatusRuntimeException:
> UNAVAILABLE: io exception Caused by:
> org.apache.beam.vendor.grpc.v1p21p0.io.netty.channel.AbstractChannel$AnnotatedConnectException:
> Connection refused: localhost/127.0.0.1:51017
> *environment_type=DOCKER*
> # Run pipeline on local cluster: Work fine
> # Run pipeline on K8S cluster, Exception are thrown:
> Caused by: java.io.IOException: Cannot run program "docker": error=2, No
> such file or directory.
>
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