gaborgsomogyi commented on issue #25853: [WIP][SPARK-21869][SS] Apply Apache Commons Pool to Kafka producer URL: https://github.com/apache/spark/pull/25853#issuecomment-541727303 I've tested batch scenario as well just to be on the safe side in the following way: https://gist.github.com/gaborgsomogyi/4634da1b6f1689ce32b2efcfcbf482d7 The test execution time was between 4.9 and 5.35 sec both with and without this change. I didn't expect any significant difference here, I've mainly double checked that only 2 producer placed into the cache (`TestSparkSession` is created with `local[2]`).
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