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https://issues.apache.org/jira/browse/BEAM-12818?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17425251#comment-17425251
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Kyle Weaver commented on BEAM-12818:
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Can you explain why this should be a blocker for 2.34.0?
> When writing to GCS, spread prefix of temporary files and reuse autoscaling
> of the temporary directory
> ------------------------------------------------------------------------------------------------------
>
> Key: BEAM-12818
> URL: https://issues.apache.org/jira/browse/BEAM-12818
> Project: Beam
> Issue Type: Bug
> Components: io-java-gcp
> Reporter: Sam Whittle
> Assignee: Sam Whittle
> Priority: P1
> Fix For: 2.34.0
>
> Time Spent: 3h
> Remaining Estimate: 0h
>
> When writing files using FileIO, the given temporary directory has a
> subdirectory created in it for each FileBasedSink. This is useful for
> non-windowed output where the temporary directory can be matched to delete
> leftover files that were lost during processing.
> However for windowed writes such subdirectories are unnecessary and cause a
> common prefix to be shared for the temporary files. Additionally this common
> prefix varies per job and thus the autoscaling for the previous prefix is no
> longer effective, see
> https://cloud.google.com/storage/docs/request-rate#randomness_after_sequential_prefixes_is_not_as_effective
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