cozos commented on issue #25899: [SPARK-29089][SQL] Parallelize blocking FileSystem calls in DataSource#checkAndGlobPathIfNecessary URL: https://github.com/apache/spark/pull/25899#issuecomment-536741130 Update: I tried increasing `fs.s3a.connection.maximum` and it did improve performance of the filesystem calls. I still need to set up a benchmark that runs on EC2 instead of remote dev laptop, will update in a couple days.
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