[next gen on clould] native br restore failed due to scatter failed

[Lily2025]

Bug Report

What did you do?

tikv：6 * tikv-16C64G
1、about 2TB in keyspace1 (1TB for one tikv)
2、native br restore data from keyspace1 to another keyspace

What did you expect to see?

native br restore can success

What did you see instead?

native br restore failed due to scatter failed

What version of PD are you using (pd-server -V)?

sh-5.1# ./pd-server -V
Release Version: v9.0.0-beta.2.pre-4-g6002a2e
Edition: Enterprise
Kernel Type: Next Generation
Git Commit Hash: 6002a2e
Git Branch: HEAD
UTC Build Time: 2025-07-01 09:54:05

[Lily2025]

/type bug
/severity critical
/assign rleungx