Hi, community: We use spark 3.1.2
In PruneFileSourcePartitions rule, the FileScan::withFilters is called to push partition prune filter(and this is the only place this function can be called), but it has a constraint that “scan.readDataSchema.nonEmpty” (https://github.com/apache/spark/blob/de351e30a90dd988b133b3d00fa6218bfcaba8b8/sql/core/src/main/scala/org/apache/spark/sql/execution/datasources/PruneFileSourcePartitions.scala#L114) We use spark sql in custom catalog and execute the count sql like: select count(*) from catalog.db.tbl where dt=‘0812’ , in which dt is a partition key. In this case the scan.readDataSchema is empty indeed and no scan partition prune performed, which cause scan all partition at last. Is it something I misunderstood? Any help is appreciated Than you. --------------------------------------------------------------------- To unsubscribe e-mail: user-unsubscr...@spark.apache.org
