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Posted to issues@beam.apache.org by "ASF GitHub Bot (Jira)" <ji...@apache.org> on 2020/09/10 00:06:00 UTC
[jira] [Work logged] (BEAM-10762) Beam Python on Flink fails when
no artifacts staged
[ https://issues.apache.org/jira/browse/BEAM-10762?focusedWorklogId=481160&page=com.atlassian.jira.plugin.system.issuetabpanels:worklog-tabpanel#worklog-481160 ]
ASF GitHub Bot logged work on BEAM-10762:
-----------------------------------------
Author: ASF GitHub Bot
Created on: 10/Sep/20 00:05
Start Date: 10/Sep/20 00:05
Worklog Time Spent: 10m
Work Description: ibzib opened a new pull request #12803:
URL: https://github.com/apache/beam/pull/12803
- Replace the obsolete artifact staging token with the NO ARTIFACTS placeholder.
- Add a test that verifies pipelines pass when no artifacts are staged.
R: @robertwb
------------------------
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Issue Time Tracking
-------------------
Worklog Id: (was: 481160)
Remaining Estimate: 0h
Time Spent: 10m
> Beam Python on Flink fails when no artifacts staged
> ---------------------------------------------------
>
> Key: BEAM-10762
> URL: https://issues.apache.org/jira/browse/BEAM-10762
> Project: Beam
> Issue Type: Bug
> Components: java-fn-execution, sdk-py-harness
> Affects Versions: 2.23.0
> Reporter: Charles Chen
> Assignee: Kyle Weaver
> Priority: P1
> Time Spent: 10m
> Remaining Estimate: 0h
>
> When a Beam job with no artifacts staged is deployed on a Beam-on-Flink cluster (without the JobServer), it crashes the Python beam worker pool and does not recover. This causes that job (and subsequent jobs that would have used that task manager slot) to hang and fail. Strangely, if a Beam job *with* artifacts staged is run on that Beam worker pool container instance (i.e. using that task manager slot), subsequent jobs *without* artifacts staged that end up using that task manager slot run properly and succeed.
> When this happens, the error from the worker pool container looks like this:
> {code:java}
> 2020-08-19 01:58:12.287 PDT
> 2020/08/19 08:58:12 Initializing python harness: /opt/apache/beam/boot --id=1-1 --logging_endpoint=localhost:38839 --artifact_endpoint=localhost:43187 --provision_endpoint=localhost:37259 --control_endpoint=localhost:34931
> 2020-08-19 01:58:12.305 PDT
> 2020/08/19 08:58:12 Failed to retrieve staged files: failed to get manifest
> 2020-08-19 01:58:12.305 PDT
> caused by:
> 2020-08-19 01:58:12.305 PDT
> rpc error: code = Unimplemented desc = Method not found: org.apache.beam.model.job_management.v1.LegacyArtifactRetrievalService/GetManifest
> {code}
> To reproduce this, it is sufficient to run the wordcount example modified to set the PipelineOptions flag `save_main_session=False` with Beam 2.23.
> {code:java}
> python -m apache_beam.examples.wordcount --runner=FlinkRunner --flink_master=$FLINK_MASTER_HOST:8081 --flink_submit_uber_jar --environment_type=EXTERNAL --environment_config=localhost:50000 --input gs://dataflow-samples/shakespeare/kinglear.txt --output gs://my/bucket/location
> {code}
> This was tested in a Beam-on-Flink cluster deployed on Kubernetes ([https://github.com/GoogleCloudPlatform/flink-on-k8s-operator]) with a modified version of this patch to use Beam 2.23 ([https://github.com/GoogleCloudPlatform/flink-on-k8s-operator/pull/301], i.e. with instances of "2.22" replaced with "2.23").
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