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https://issues.apache.org/jira/browse/SPARK-6759?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Cheng Lian updated SPARK-6759:
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Priority: Critical (was: Major)
> Do not borrow/release a kryo instance for every value in a complex type value
> when doing serialization/deserialization in in-memory columnar store
> --------------------------------------------------------------------------------------------------------------------------------------------------
>
> Key: SPARK-6759
> URL: https://issues.apache.org/jira/browse/SPARK-6759
> Project: Spark
> Issue Type: Improvement
> Components: SQL
> Reporter: Yin Huai
> Priority: Critical
>
> Right now, for columns of map, array, and struct types, we borrow/release a
> kryo instance when serializing/deserializing every value, which is really
> expensive (the kryo pool is backed by a ArrayBlockingQueue). It will be good
> if we borrow before the serialization/deserialization and release it after we
> have done all of the work.
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