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https://issues.apache.org/jira/browse/BEAM-6856?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16795509#comment-16795509
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Reuven Lax commented on BEAM-6856:
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Beam's state API supports MapState, a way of storing a tag-value map in the
state for a given key. Currently the entire map for a given key must be stored
in memory (unlike BagState which is paginated from our service). The goal is to
support out-of-memory MapState that supports fetching individual keys or
paginated iteration over the map.
Note: this depends on the Dataflow service delivering two new pieces of
functionality, which will be a prerequisite for the Beam API work.
> Support dynamic MapState on Dataflow
> ------------------------------------
>
> Key: BEAM-6856
> URL: https://issues.apache.org/jira/browse/BEAM-6856
> Project: Beam
> Issue Type: Bug
> Components: runner-dataflow
> Reporter: Reuven Lax
> Priority: Major
>
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