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https://issues.apache.org/jira/browse/BEAM-6846?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16795594#comment-16795594
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Kishan Kumar commented on BEAM-6846:
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[~kenn] , The Performance Issue is coming While Doing GroupBy and Co-GroupBy
Steps Using KV<String,TableRow>. We have Chosen 2.7.0 Due to Availability of
Numeric Support and LTS. Where we can get Some Support from Apache Beam Team.
Note: But when we use Custom Class then it's Working Fine As Expected.
> Beam Performance Degradation on Dataflow Runner
> -----------------------------------------------
>
> Key: BEAM-6846
> URL: https://issues.apache.org/jira/browse/BEAM-6846
> Project: Beam
> Issue Type: Improvement
> Components: runner-dataflow
> Affects Versions: 2.7.0, 2.8.0
> Reporter: Kishan Kumar
> Priority: Major
> Labels: patch
> Fix For: 2.12.0
>
>
> After Upgrading From 2.5.0 Version the jobs of Version 2.7.0 are taking a
> long time compared to 2.5.0.
> System Lag is also got introduced the Error Getting Generated:
> "Workflow failed. Causes: The Dataflow job appears to be stuck because no
> worker activity has been seen in the last 1h."
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