Returns the list of files that will be read when scanning this relation.
Returns the list of files that will be read when scanning this relation. This call may be very expensive for large tables.
Returns all valid files grouped into partitions when the data is partitioned.
Returns all valid files grouped into partitions when the data is partitioned. If the data is unpartitioned, this will return a single partition with no partition values.
The filters used to prune which partitions are returned. These filters
must only refer to partition columns and this method will only return
files where these predicates are guaranteed to evaluate to true
.
Thus, these filters will not need to be evaluated again on the
returned data.
Filters that can be applied on non-partitioned columns. The implementation does not need to guarantee these filters are applied, i.e. the execution engine will ensure these filters are still applied on the returned files.
Schema of the partitioning columns, or the empty schema if the table is not partitioned.
Refresh any cached file listings
Returns the list of root input paths from which the catalog will get files.
Returns the list of root input paths from which the catalog will get files. There may be a single root path from which partitions are discovered, or individual partitions may be specified by each path.
Sum of table file sizes, in bytes
Returns an optional metadata operation time, in nanoseconds, for listing files.
Returns an optional metadata operation time, in nanoseconds, for listing files.
We do file listing in query optimization (in order to get the proper statistics) and we want to account for file listing time in physical execution (as metrics). To do that, we save the file listing time in some implementations and physical execution calls it in this method to update the metrics.
An interface for objects capable of enumerating the root paths of a relation as well as the partitions of a relation subject to some pruning expressions.