lamber-ken commented on issue #1491: [SUPPORT] OutOfMemoryError during upsert 53M records URL: https://github.com/apache/incubator-hudi/issues/1491#issuecomment-610626104 hi @tverdokhlebd, thanks your detailed spark log, from your description and dataset, key information - run on local machine - the size of each record is large I noticed that OOM happened after parquet read old record to memory, which means we need to control the number of old records, so try add this option ``` .option("hoodie.write.buffer.limit.bytes", "131072") //128MB ``` 
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