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## What changes were proposed in this pull request? * Implement (optional) use of KryoPool in KryoSerializer, an alternative to the existing implementation of caching a Kryo instance inside KryoSerializerInstance * Add config key & documentation of spark.kryo.pool in order to turn this on * Add benchmark KryoSerializerBenchmark to compare new and old implementation * Add results of benchmark ## How was this patch tested? Added new tests inside KryoSerializerSuite to test the pool implementation as well as added the pool option to the existing regression testing for SPARK-7766 This is my original work and I license the work to the project under the project’s open source license. Closes #22855 from patrickbrownsync/kryo-pool. Authored-by: Patrick Brown <patrick.brown@blyncsy.com> Signed-off-by: Sean Owen <sean.owen@databricks.com> |
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