garyli1019 commented on issue #800: Performance tuning URL: https://github.com/apache/incubator-hudi/issues/800#issuecomment-514430604 Maybe this https://github.com/apache/incubator-hudi/blob/master/hoodie-common/src/main/java/com/uber/hoodie/common/util/SerializationUtils.java#L85 is too small? Seems like this is not related to `spark.kryoserializer.buffer.max`? Also could be https://github.com/apache/incubator-hudi/blob/master/hoodie-client/src/main/java/com/uber/hoodie/config/HoodieMemoryConfig.java#L119 is too small. `12G * 0.4 * 0.6 = 2.88G` seems enough for split merge, but I will try larger executor memory to confirm...
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