Two update tasks are introduced to improve the indices on the mentioned tables:

com.openexchange.drive.checksum.rdb.FileChecksumsR eIndexTask: Removes the obsolete (folder, cid) and (checksum, cid) indices and creates the following new ones: (cid, folder) and (cid, checksum)

com.openexchange.drive.checksum.rdb.DirectoryCheck sumsReIndexTask: Removes the obsolete (folder, cid) and (checksum, cid) indices and creates the following new ones: (cid, user, folder) and (cid, checksum)