gaborgsomogyi commented on issue #23764: [SPARK-26825][SS] Fix temp checkpoint creation in cluster mode when default filesystem is not local. URL: https://github.com/apache/spark/pull/23764#issuecomment-467827101 > Do queries actually break without this change, or is the checkpoint just located in a different place? Yes, it fails to start. Additionally having an implementation where * One part of the checkpoint is on local FS and the other part is on default FS (which is HDFS in this case). Users are checking the checkpoint data if the query fails which is in 2 different locations now. * Assuming that locally created temp directory is writable on HDFS is wrong in general.
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