garyli1019 commented on issue #800: Performance tuning URL: https://github.com/apache/incubator-hudi/issues/800#issuecomment-520093742 Few things I did to improve performance: - changed max parquet size from 256MB to 128MB cuts the shuffle read size to half, which improve the performance without increasing the executor memory - increase the single executor memory improve the performance as well - avoid merging too many historical data I am not able to get heapdump at this moment due to the cluster access issue, but I will try to print GC info to get some insight.
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