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https://issues.apache.org/jira/browse/BEAM-11154?focusedWorklogId=506393&page=com.atlassian.jira.plugin.system.issuetabpanels:worklog-tabpanel#worklog-506393
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ASF GitHub Bot logged work on BEAM-11154:
-----------------------------------------
Author: ASF GitHub Bot
Created on: 29/Oct/20 20:37
Start Date: 29/Oct/20 20:37
Worklog Time Spent: 10m
Work Description: y1chi opened a new pull request #13225:
URL: https://github.com/apache/beam/pull/13225
…different name in step translation phase
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Issue Time Tracking
-------------------
Worklog Id: (was: 506393)
Remaining Estimate: 0h
Time Spent: 10m
> Missing coder in pipeline components with dataflow runner v2
> ------------------------------------------------------------
>
> Key: BEAM-11154
> URL: https://issues.apache.org/jira/browse/BEAM-11154
> Project: Beam
> Issue Type: Bug
> Components: runner-dataflow
> Reporter: Yichi Zhang
> Assignee: Yichi Zhang
> Priority: P2
> Time Spent: 10m
> Remaining Estimate: 0h
>
> When running pipelines with Top combine function on dataflow runner v2, the
> backend complains about missing coder id for example missing
> BoundedHeapCoder1.
> After some troubleshooting this problem seems more generic:
> The step context translation phase would not recognize already registered
> Coder with incorrect hashCode() function, and will try to give it a new
> uniqified name to the pipeline_proto_coder_id,
> code pointers:
> https://github.com/apache/beam/blob/5675108933de6eb601ca2e4f21870d2ababe0ec7/runners/core-construction-java/src/main/java/org/apache/beam/runners/core/construction/SdkComponents.java#L268
> In this case, since the comparator field in BoundedHeapCoder often does not
> implement hashCode() and equals() the BoundedHeapCoder will also have a
> different hashCode() each time a new instance is created. The duplicated
> coder does not exist in already translated pipeline proto and will lead to
> the aforementioned missing coder id issue.
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