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https://issues.apache.org/jira/browse/BEAM-10787?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17548712#comment-17548712
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Danny McCormick commented on BEAM-10787:
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This issue has been migrated to https://github.com/apache/beam/issues/20335
> External sorter 2048MB memory limit should be Hadoop only
> ---------------------------------------------------------
>
> Key: BEAM-10787
> URL: https://issues.apache.org/jira/browse/BEAM-10787
> Project: Beam
> Issue Type: Bug
> Components: extensions-java-sorter
> Affects Versions: 2.23.0
> Reporter: Neville Li
> Priority: P4
> Labels: Clarified
> Time Spent: 20m
> Remaining Estimate: 0h
>
> The 2048MB limit only applies when using Hadoop sequence file for external
> sort.
> It doesn't apply when sorting is entirely in memory since we're using a
> {{List<KV<byte[], byte[]>>}} to buffer data and {{long}} to keep track of
> total bytes. Same with native external sorter.
> https://github.com/apache/beam/pull/12659
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