[
https://issues.apache.org/jira/browse/CALCITE-3932?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17085317#comment-17085317
]
Julian Hyde commented on CALCITE-3932:
--------------------------------------
What data type cache are you referring to? Each query has a RelDataTypeFactory,
and that acts as cache.
Tying caches to threads seems arbitrary to me.
> 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.
--
This message was sent by Atlassian Jira
(v8.3.4#803005)
