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https://issues.apache.org/jira/browse/HIVE-16879?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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David Mollitor updated HIVE-16879:
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Description:
Improve cache key for cache implemented in
{{org.apache.hadoop.hive.metastore.AggregateStatsCache}}.
# Upgrade _debug_ logging to not generate text unless required
# Changed _equals_ method to check first for the item most likely to be
different, column name
# Improve usage of Java 8 Map API
was:
Improve cache key for cache implemented in
{{org.apache.hadoop.hive.metastore.AggregateStatsCache}}.
# Cache some of the key components themselves (db name, table name) using
{{String}} intern method to conserve memory for repeated keys, to improve
{{equals}} method as now references can be used for equality, and hashcodes
will be cached as well as per {{String}} clash hashcode method.
# Upgrade _debug_ logging to not generate text unless required
# Changed _equals_ method to check first for the item most likely to be
different, column name
Priority: Minor (was: Trivial)
Summary: Review of AggregateStatsCache (was: Improve Cache Key)
> Review of AggregateStatsCache
> -----------------------------
>
> Key: HIVE-16879
> URL: https://issues.apache.org/jira/browse/HIVE-16879
> Project: Hive
> Issue Type: Improvement
> Components: Metastore
> Affects Versions: 3.0.0
> Reporter: David Mollitor
> Assignee: David Mollitor
> Priority: Minor
> Attachments: HIVE-16879.1.patch, HIVE-16879.2.patch,
> HIVE-16879.3.patch
>
>
> Improve cache key for cache implemented in
> {{org.apache.hadoop.hive.metastore.AggregateStatsCache}}.
> # Upgrade _debug_ logging to not generate text unless required
> # Changed _equals_ method to check first for the item most likely to be
> different, column name
> # Improve usage of Java 8 Map API
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