txn-file: Get first key inside range of both region & txn chunk

[pingyu]

Changes

• Get first key inside range of both region & txn chunk
  • Otherwise, commit request will have duplicated keys as all txn chunks in the same region will get the same key.
  • An alternative solution is just passing one key for every batch. But it's more reasonable that the commit keys is in the range of txn chunks.

Manual Test

From logs of tikv:

[cmd="kv::command::txn_file start_ts: 452262720810778627 chunk_ids: 452262720810778634 user_meta: 01030014638CC246060500FC668CC24606 shard_ver: 70 inner_lower_bound: 748000000000000036 inner_upper_bound: 7480000000000000665F72 \"kv::command::commit [7800000174800000FF00000000645F7280FF0000000000000200FE] 452262720810778627 -> 452262720876314629 | region_id: 1298 region_epoch { conf_ver: 17 version: 70 } peer { id: 1385 store_id: 4 } max_execution_duration_ms: 60000 api_version: V2 request_source: \\\"external_Insert\\\" resource_control_context { resource_group_name: \\\"default\\\" penalty {} override_priority: 8 } keyspace_id: 1\""]

[cmd="kv::command::txn_file start_ts: 452262720810778631 chunk_ids: 452262721217101826 chunk_ids: 452262721217101828 chunk_ids: 452262721217101825 chunk_ids: 452262721230209027 user_meta: 01070014638CC246060100CC688DC24606 shard_ver: 92 inner_lower_bound: 74800000000000006B5F7203800000000000000103800000000000000403800000000000000A inner_upper_bound: 74800000000000006B5F7203800000000000000103800000000000000403800000000000000E \"kv::command::commit [7800000174800000FF000000006B5F7203FF8000000000000001FF0380000000000000FF0403800000000000FF000A000000000000F9, 7800000174800000FF000000006B5F7203FF8000000000000001FF0380000000000000FF0403800000000000FF000B000000000000F9, 7800000174800000FF000000006B5F7203FF8000000000000001FF0380000000000000FF0403800000000000FF000C000000000000F9, 7800000174800000FF000000006B5F7203FF8000000000000001FF0380000000000000FF0403800000000000FF000D000000000000F9] 452262720810778631 -> 452262725201690625 | region_id: 2802 region_epoch { conf_ver: 11 version: 92 } peer { id: 2805 store_id: 6 } max_execution_duration_ms: 60000 api_version: V2 request_source: \\\"external_Insert\\\" resource_control_context { resource_group_name: \\\"default\\\" penalty {} override_priority: 8 } keyspace_id: 1\""]

[cmd="kv::command::txn_file start_ts: 452262720810778631 chunk_ids: 452262720968065025 chunk_ids: 452262720982220803 chunk_ids: 452262720994279425 chunk_ids: 452262720994279427 user_meta: 01070014638CC246060100CC688DC24606 shard_ver: 92 inner_lower_bound: 74800000000000006B5F698000000000000002038000000000000001038000000000000004014241524241524553FF4500000000000000F801516E67316932336EFF3978766875000000FC038000000000000001038000000000000004038000000000000012 inner_upper_bound: 74800000000000006B5F698000000000000002038000000000000001038000000000000004014241524241525052FF4553000000000000F9014F61596661337250FF0000000000000000F7038000000000000001038000000000000004038000000000000017 \"kv::command::commit [7800000174800000FF000000006B5F6980FF0000000000000203FF8000000000000001FF0380000000000000FF0401424152424152FF4553FF4500000000FF000000F801516E67FF316932336EFF3978FF766875000000FC03FF8000000000000001FF0380000000000000FF0403800000000000FF0012000000000000F9, 7800000174800000FF000000006B5F6980FF0000000000000203FF8000000000000001FF0380000000000000FF0401424152424152FF4F55FF4748540000FF000000FA01424434FF726A4D7247FF5670FF4E5A3761344AFF00FF00000000000000F7FF0380000000000000FF0103800000000000FF0004038000000000FF00000F0000000000FA, 7800000174800000FF000000006B5F6980FF0000000000000203FF8000000000000001FF0380000000000000FF0401424152424152FF4F55FF4748540000FF000000FA01655A53FF636D356E78FF504CFF000000000000F903FF8000000000000001FF0380000000000000FF0403800000000000FF000E000000000000F9, 7800000174800000FF000000006B5F6980FF0000000000000203FF8000000000000001FF0380000000000000FF0401424152424152FF4F55FF4748540000FF000000FA01794E67FF366A4D4176FF0000FF000000000000F703FF8000000000000001FF0380000000000000FF0403800000000000FF0002000000000000F9] 452262720810778631 -> 452262725201690625 | region_id: 2786 region_epoch { conf_ver: 11 version: 92 } peer { id: 2789 store_id: 6 } max_execution_duration_ms: 60000 api_version: V2 request_source: \\\"external_Insert\\\" resource_control_context { resource_group_name: \\\"default\\\" penalty {} override_priority: 8 } keyspace_id: 1\""]

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[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: coocood, iosmanthus

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[ti-chi-bot]

[LGTM Timeline notifier]

Timeline:

• 2024-09-02 07:20:52.641294412 +0000 UTC m=+256177.159347338: ☑️ agreed by coocood.
• 2024-09-02 07:23:37.47502453 +0000 UTC m=+256341.993077447: ☑️ agreed by iosmanthus.