xushiyan commented on issue #6970: URL: https://github.com/apache/hudi/issues/6970#issuecomment-1321694740
> Please see https://hudi.apache.org/docs/snapshot_exporter/ partitioner configs are ignored when the output format is hudi. Moreover we're using this as a backup and do not want to repartition. I feel my issue is orthogonal to partitioning: > > * why does performance _decrease_ on increasing memory/cores per executor? > * why does performance saturate at 16 executors, although the table has far more than 16 partitions? > > Most of the time is spent exporting the contents of `.hoodie/`, which appears to be happening serially (not parallel). @ft-bazookanu thanks for raising the problems. there are a few points for perf improvements in exporter, for example, the parallelism was not set properly for list partitions and base files to copy. also when copy commit files under `.hoodie/` , it is currently made as serial in a for loop. This jira HUDI-712 was filed long time back and deprioritized. Now we can pick it up since it benefits real use cases now. -- This is an automated message from the Apache Git Service. To respond to the message, please log on to GitHub and use the URL above to go to the specific comment. To unsubscribe, e-mail: [email protected] For queries about this service, please contact Infrastructure at: [email protected]
