On Wed, 18 Jan 2023 14:16:22 GMT, Alan Bateman <al...@openjdk.org> wrote:
> The Windows implementation of File.listRoots was changed in JDK 10 to test > the root directory of each "logical drive" to see that it exists. The motive > was to filter out drive letters corresponding to removable media where the > media is not present. This is problematic for a number of reasons that > include performance (esp. for mapped drives), inconsistency with > FileSystem::getRootDirectories, and surprising behavior when media is > re-inserted. After re-examining this area again, the best thing seems to be > just undo this change so that File.listRoots doesn't attempt to do the > problematic filtering. This pull request has now been integrated. Changeset: 5b0af1a8 Author: Alan Bateman <al...@openjdk.org> URL: https://git.openjdk.org/jdk/commit/5b0af1a80bb4d2a81cda7e26a6ad0db43e679519 Stats: 29 lines in 2 files changed: 17 ins; 1 del; 11 mod 8208077: File.listRoots performance degradation Reviewed-by: lancea, bpb ------------- PR: https://git.openjdk.org/jdk/pull/12072
