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https://issues.apache.org/jira/browse/BEAM-6819?focusedWorklogId=212787&page=com.atlassian.jira.plugin.system.issuetabpanels:worklog-tabpanel#worklog-212787
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ASF GitHub Bot logged work on BEAM-6819:
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Author: ASF GitHub Bot
Created on: 14/Mar/19 00:59
Start Date: 14/Mar/19 00:59
Worklog Time Spent: 10m
Work Description: chamikaramj commented on pull request #7922:
[BEAM-6819] Report estimated size as source metadata when splitting.
URL: https://github.com/apache/beam/pull/7922
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Issue Time Tracking
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Worklog Id: (was: 212787)
Time Spent: 10m
Remaining Estimate: 0h
> Remote sources provide insufficient metadata about relative sizes of splits
> ---------------------------------------------------------------------------
>
> Key: BEAM-6819
> URL: https://issues.apache.org/jira/browse/BEAM-6819
> Project: Beam
> Issue Type: Improvement
> Components: sdk-java-core
> Reporter: Sunil Pedapudi
> Priority: Minor
> Time Spent: 10m
> Remaining Estimate: 0h
>
> In the current split protocol, SourceMetadata is reported for the initial
> parent source. Subsequent splits drop the SourceMetadata. Without this
> additional information, downstream systems make simplifying assumptions that
> result in decorrelation between input fraction and the actual fraction of
> input represented by a task.
> This decorrelation of input fraction has cascading negative effects for any
> system relying on trends in input fraction (eg., Cloud Dataflow's autotuning).
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