holdenk commented on a change in pull request #28911: URL: https://github.com/apache/spark/pull/28911#discussion_r447311636
########## File path: core/src/main/scala/org/apache/spark/internal/config/package.scala ########## @@ -1391,10 +1391,11 @@ package object config { private[spark] val SHUFFLE_HOST_LOCAL_DISK_READING_ENABLED = ConfigBuilder("spark.shuffle.readHostLocalDisk") - .doc(s"If enabled (and `${SHUFFLE_USE_OLD_FETCH_PROTOCOL.key}` is disabled and external " + - s"shuffle `${SHUFFLE_SERVICE_ENABLED.key}` is enabled), shuffle " + - "blocks requested from those block managers which are running on the same host are read " + - "from the disk directly instead of being fetched as remote blocks over the network.") + .doc(s"If enabled (and `${SHUFFLE_USE_OLD_FETCH_PROTOCOL.key}` is disabled and 1) external " + + s"shuffle `${SHUFFLE_SERVICE_ENABLED.key}` is enabled or 2) ${DYN_ALLOCATION_ENABLED.key}" + + s" is disabled), shuffle blocks requested from those block managers which are running on " + + s"the same host are read from the disk directly instead of being fetched as remote blocks" + + s" over the network.") Review comment: Maybe add some extra words around this depends on having non-isolated container storage (e.g. a shared hostPath in the k8s world) ---------------------------------------------------------------- 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. For queries about this service, please contact Infrastructure at: us...@infra.apache.org --------------------------------------------------------------------- To unsubscribe, e-mail: reviews-unsubscr...@spark.apache.org For additional commands, e-mail: reviews-h...@spark.apache.org