sync-diff fails with "Error 1105: context deadline exceeded error occured"

[fubinzh]

Bug Report

Please answer these questions before submitting your issue. Thanks!

1. What did you do?
   Run sync-diff to compare upstream tidb and download stream tidb.

2. What did you expect to see?
   sync-diff itself should finish the check

3. What did you see instead?

Error in comparison process:
Error 1105: context deadline exceeded error occured in `pp111db10`.`xx`

4. What version of TiDB are you using (tidb-server -V or run select tidb_version(); on TiDB)?
   v6.1.0

5. which tool are you using?
   sync-diff-inspector

6. what versionof tool are you using (pump -V or tidb-lightning -V or syncer -V)?
   App Name: sync_diff_inspector v2.0
   Release Version: v5.2.2-140-gdd591fd
   Git Commit Hash: dd591fd
   Git Branch: table_range_equal
   UTC Build Time: 2022-04-26 09:27:46

[fubinzh]

There compare database about 4TB with 4 tables.
Sync-diff Logs:
sync_diff.log