[GitHub] [hudi] xushiyan commented on issue #3751: [SUPPORT] Slow Write Speeds to Hudi

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xushiyan commented on issue #3751:
URL: https://github.com/apache/hudi/issues/3751#issuecomment-1025300721


   > num-executors 19
   > executor-cores 1
   > executor-memory 6g
   
   @MikeBuh this setting means you probably can have 30-40 parallelism to set for the spark and shuffle partitions and hudi parallelisms, given each core works with 1.5-2 concurrency. suggest increase executor cores to 3-5 to increase throughput, and tune other settings accordingly. You want to also align spark parallelism, shuffle partitions and hudi parallelisms (a few of them) as well.
   
   > hoodie.datasource.write.row.writer.enable: true
   
   This is only for bulk insert as of now.
   
   >  data seems to be skewed and thus not easy to partition using a field and ensuring even distribution
   
   usually you'd use salting to handle skewed data to improve this. the performance won't go far without handling skewness properly.
   
   Hope these would help.


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