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https://issues.apache.org/jira/browse/CALCITE-3932?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Haisheng Yuan updated CALCITE-3932:
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Description:
Data type can be evicted out of cache, which is global, thread-safe.
It seems not necessary to cache them globally, because most of them are
RelRecordType, which is query dependent, not sharable between different queries.
was:
Data type can be evicted out of cache, which is global, thread-safe. `=` based
type comparison may suffer from cache eviction.
It seems not necessary to cache them globally, because most of them are
RelRecordType, which is query dependent, not sharable between different queries.
> Make data type cache thread local, non-evictable
> ------------------------------------------------
>
> Key: CALCITE-3932
> URL: https://issues.apache.org/jira/browse/CALCITE-3932
> Project: Calcite
> Issue Type: Improvement
> Components: core
> Reporter: Haisheng Yuan
> Priority: Major
>
> Data type can be evicted out of cache, which is global, thread-safe.
> It seems not necessary to cache them globally, because most of them are
> RelRecordType, which is query dependent, not sharable between different
> queries.
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