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https://issues.apache.org/jira/browse/CALCITE-460?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Julian Hyde closed CALCITE-460.
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Closing now that 1.0.0-incubating has been released.
> Add ImmutableBitSet and replace uses of BitSet
> ----------------------------------------------
>
> Key: CALCITE-460
> URL: https://issues.apache.org/jira/browse/CALCITE-460
> Project: Calcite
> Issue Type: Bug
> Reporter: Julian Hyde
> Assignee: Julian Hyde
> Fix For: 1.0.0-incubating
>
>
> Calcite makes heavy use of bit sets. java.util.BitSet has a convenient API
> but (a) is mutable, (b) uses quite a lot of memory, (c) is not iterable.
> Propose to implement ImmutableBitSet, which addresses those deficiencies.
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