背景：
备份阶段：全量备份 + 增量备份
恢复阶段：全量恢复 + 增量恢复
操作过程
全量备份阶段：全量备份使用 br 的版本是 4.0.1
全量恢复阶段：全量恢复使用 br 的版本是 4.0.16
增量备份阶段：增量备份使用 br 的版本是 4.0.1
中间数据库有一些 分区表 partition 的变更
增量恢复阶段：增量恢复使用 br 的版本是 4.0.16 (报错)，增量恢复使用 br 的版本是 4.0.1 (成功)
报错如下：
[2022/07/05 09:28:31.564 +08:00] [INFO] [info.go:40] ["Welcome to Backup & Restore (BR)"] [release-version=v4.0.16] [git-hash=e1b36e70163b32cda849ac0ddb47136f05c8de67] [git-branch=heads/ref
s/tags/v4.0.16] [go-version=go1.13] [utc-build-time="2021-12-02 04:16:27"] [race-enabled=false]
......
[2022/07/05 09:28:31.570 +08:00] [INFO] [base_client.go:252] ["[pd] switch leader"] [new-leader=http://xxxxx:3379] [old-leader=]
[2022/07/05 09:28:31.570 +08:00] [INFO] [base_client.go:102] ["[pd] init cluster id"] [cluster-id=7116436913537916717]
[2022/07/05 09:28:31.572 +08:00] [INFO] [conn.go:162] ["new mgr"] [pdAddrs=xxxxx:3379]
[2022/07/05 09:28:31.573 +08:00] [INFO] [tidb.go:72] ["new domain"] [store=tikv-7116436913537916717] ["ddl lease"=1s] ["stats lease"=-1ns]
[2022/07/05 09:28:31.577 +08:00] [INFO] [ddl.go:323] ["[ddl] start DDL"] [ID=75a7da49-f1bf-4e3d-9826-a4822f1cc8ba] [runWorker=true]
[2022/07/05 09:28:31.577 +08:00] [INFO] [manager.go:188] ["start campaign owner"] [ownerInfo="[ddl] /tidb/ddl/fg/owner"]
[2022/07/05 09:28:31.579 +08:00] [INFO] [ddl.go:312] ["[ddl] start delRangeManager OK"] ["is a emulator"=false]
[2022/07/05 09:28:31.579 +08:00] [INFO] [ddl_worker.go:131] ["[ddl] start DDL worker"] [worker="worker 1, tp general"]
[2022/07/05 09:28:31.579 +08:00] [INFO] [ddl_worker.go:131] ["[ddl] start DDL worker"] [worker="worker 2, tp add index"]
[2022/07/05 09:28:31.627 +08:00] [INFO] [domain.go:148] ["full load InfoSchema success"] [usedSchemaVersion=0] [neededSchemaVersion=90] ["start time"=30.224528ms]
[2022/07/05 09:28:31.628 +08:00] [INFO] [domain.go:379] ["full load and reset schema validator"]
[2022/07/05 09:28:31.816 +08:00] [WARN] [version.go:238] ["cannot parse backup version"] [version=] [error=" is not in dotted-tri format"]
[2022/07/05 09:28:31.842 +08:00] [INFO] [client.go:186] ["load backupmeta"] [databases=2] [jobs=6]
[2022/07/05 09:28:31.846 +08:00] [WARN] [restore.go:546] ["set max-index-length to max(3072*4) to skip check index length in DDL"]
[2022/07/05 09:28:31.923 +08:00] [INFO] [session.go:2406] ["CRUCIAL OPERATION"] [conn=0] [schemaVersion=90] [cur_db=dbname] [sql="alter table xxxxx drop partition p20220627"] [user=]
[2022/07/05 09:28:31.933 +08:00] [INFO] [ddl_worker.go:262] ["[ddl] add DDL jobs"] ["batch count"=1] [jobs="ID:408, Type:drop partition, State:none, SchemaState:none, SchemaID:45, TableID:356, RowCount:0, ArgLen:1, start time: 2022-07-05 09:28:31.922 +0800 CST, Err:<nil>, ErrCount:0, SnapshotVersion:0; "]
[2022/07/05 09:28:31.933 +08:00] [INFO] [ddl.go:537] ["[ddl] start DDL job"] [job="ID:408, Type:drop partition, State:none, SchemaState:none, SchemaID:45, TableID:356, RowCount:0, ArgLen:1, start time: 2022-07-05 09:28:31.922 +0800 CST, Err:<nil>, ErrCount:0, SnapshotVersion:0"] [query="alter table xxxxx drop partition p20220627"]
[2022/07/05 09:28:32.443 +08:00] [INFO] [tidb.go:219] ["rollbackTxn for ddl/autocommit failed"]
[2022/07/05 09:28:32.470 +08:00] [WARN] [session.go:1384] ["run statement failed"] [schemaVersion=90] [error="[ddl:-1]json: cannot unmarshal array into Go value of type string"] [errorVerbose="[ddl:-1]json: cannot unmarshal array into Go value of type string\
github.com/pingcap/errors.AddStack\
\tgithub.com/pingcap/errors@v0.11.5-0.20201126102027-b0a155152ca3/errors.go:174\
github.com/pingcap/errors.Trace\
\tgithub.com/pingcap/errors@v0.11.5-0.20201126102027-b0a155152ca3/juju_adaptor.go:15\
github.com/pingcap/tidb/ddl.(*ddl).doDDLJob\
\tgithub.com/pingcap/tidb@v1.1.0-beta.0.20210714111333-67b641d5036c/ddl/ddl.go:578\
github.com/pingcap/tidb/ddl.(*ddl).DropTablePartition\
\tgithub.com/pingcap/tidb@v1.1.0-beta.0.20210714111333-67b641d5036c/ddl/ddl_api.go:2624\
github.com/pingcap/tidb/ddl.(*ddl).AlterTable\
\tgithub.com/pingcap/tidb@v1.1.0-beta.0.20210714111333-67b641d5036c/ddl/ddl_api.go:2107\
github.com/pingcap/tidb/executor.(*DDLExec).executeAlterTable\
\tgithub.com/pingcap/tidb@v1.1.0-beta.0.20210714111333-67b641d5036c/executor/ddl.go:366\
github.com/pingcap/tidb/executor.(*DDLExec).Next\
\tgithub.com/pingcap/tidb@v1.1.0-beta.0.20210714111333-67b641d5036c/executor/ddl.go:86\
github.com/pingcap/tidb/executor.Next\
\tgithub.com/pingcap/tidb@v1.1.0-beta.0.20210714111333-67b641d5036c/executor/executor.go:262\
github.com/pingcap/tidb/executor.(*ExecStmt).handleNoDelayExecutor\
\tgithub.com/pingcap/tidb@v1.1.0-beta.0.20210714111333-67b641d5036c/executor/adapter.go:531\
github.com/pingcap/tidb/executor.(*ExecStmt).handleNoDelay\
\tgithub.com/pingcap/tidb@v1.1.0-beta.0.20210714111333-67b641d5036c/executor/adapter.go:413\
github.com/pingcap/tidb/executor.(*ExecStmt).Exec\
\tgithub.com/pingcap/tidb@v1.1.0-beta.0.20210714111333-67b641d5036c/executor/adapter.go:366\
github.com/pingcap/tidb/session.runStmt\
\tgithub.com/pingcap/tidb@v1.1.0-beta.0.20210714111333-67b641d5036c/session/tidb.go:322\
github.com/pingcap/tidb/session.(*session).ExecuteStmt\
\tgithub.com/pingcap/tidb@v1.1.0-beta.0.20210714111333-67b641d5036c/session/session.go:1381\
github.com/pingcap/tidb/session.(*session).ExecuteInternal\
\tgithub.com/pingcap/tidb@v1.1.0-beta.0.20210714111333-67b641d5036c/session/session.go:1132\
github.com/pingcap/br/pkg/gluetidb.(*tidbSession).Execute\
\tgithub.com/pingcap/br@/pkg/gluetidb/glue.go:109\
github.com/pingcap/br/pkg/restore.(*DB).ExecDDL\
\tgithub.com/pingcap/br@/pkg/restore/db.go:79\
github.com/pingcap/br/pkg/restore.(*Client).ExecDDLs\
\tgithub.com/pingcap/br@/pkg/restore/client.go:500\
github.com/pingcap/br/pkg/task.RunRestore\
\tgithub.com/pingcap/br@/pkg/task/restore.go:320\
main.runRestoreCommand\
\tgithub.com/pingcap/br@/cmd/br/restore.go:25\
main.newFullRestoreCommand.func1\
\tgithub.com/pingcap/br@/cmd/br/restore.go:97\
github.com/spf13/cobra.(*Command).execute\
\tgithub.com/spf13/cobra@v1.0.0/command.go:842\
github.com/spf13/cobra.(*Command).ExecuteC\
\tgithub.com/spf13/cobra@v1.0.0/command.go:950\
github.com/spf13/cobra.(*Command).Execute\
\tgithub.com/spf13/cobra@v1.0.0/command.go:887\
main.main\
\tgithub.com/pingcap/br@/cmd/br/main.go:56\
runtime.main\
\truntime/proc.go:203\
runtime.goexit\
\truntime/asm_amd64.s:1357"] [session="{\
\"currDBName\": \"dbname\",\
\"id\": 0,\
\"status\": 2,\
\"strictMode\": false,\
\"user\": null\
}"]
[2022/07/05 09:28:32.470 +08:00] [ERROR] [db.go:81] ["execute ddl query failed"] [query="alter table xxxxx drop partition p20220627"] [db=dbname] [historySchemaVersion=3710] [error="[ddl:-1]json: cannot unmarshal array into Go value of type string"] [errorVerbose="[ddl:-1]json: cannot unmarshal array into Go value of type string\
github.com/pingcap/errors.AddStack\
\tgithub.com/pingcap/errors@v0.11.5-0.20201126102027-b0a155152ca3/errors.go:174\
github.com/pingcap/errors.Trace\
\tgithub.com/pingcap/errors@v0.11.5-0.20201126102027-b0a155152ca3/juju_adaptor.go:15\
github.com/pingcap/tidb/ddl.(*ddl).doDDLJob\
\tgithub.com/pingcap/tidb@v1.1.0-beta.0.20210714111333-67b641d5036c/ddl/ddl.go:578\
github.com/pingcap/tidb/ddl.(*ddl).DropTablePartition\
\tgithub.com/pingcap/tidb@v1.1.0-beta.0.20210714111333-67b641d5036c/ddl/ddl_api.go:2624\
github.com/pingcap/tidb/ddl.(*ddl).AlterTable\
\tgithub.com/pingcap/tidb@v1.1.0-beta.0.20210714111333-67b641d5036c/ddl/ddl_api.go:2107\
github.com/pingcap/tidb/executor.(*DDLExec).executeAlterTable\
\tgithub.com/pingcap/tidb@v1.1.0-beta.0.20210714111333-67b641d5036c/executor/ddl.go:366\
github.com/pingcap/tidb/executor.(*DDLExec).Next\
\tgithub.com/pingcap/tidb@v1.1.0-beta.0.20210714111333-67b641d5036c/executor/ddl.go:86\
github.com/pingcap/tidb/executor.Next\
\tgithub.com/pingcap/tidb@v1.1.0-beta.0.20210714111333-67b641d5036c/executor/executor.go:262\
github.com/pingcap/tidb/executor.(*ExecStmt).handleNoDelayExecutor\
\tgithub.com/pingcap/tidb@v1.1.0-beta.0.20210714111333-67b641d5036c/executor/adapter.go:531\
github.com/pingcap/tidb/executor.(*ExecStmt).handleNoDelay\
\tgithub.com/pingcap/tidb@v1.1.0-beta.0.20210714111333-67b641d5036c/executor/adapter.go:413\
github.com/pingcap/tidb/executor.(*ExecStmt).Exec\
\tgithub.com/pingcap/tidb@v1.1.0-beta.0.20210714111333-67b641d5036c/executor/adapter.go:366\
github.com/pingcap/tidb/session.runStmt\
\tgithub.com/pingcap/tidb@v1.1.0-beta.0.20210714111333-67b641d5036c/session/tidb.go:322\
github.com/pingcap/tidb/session.(*session).ExecuteStmt\
\tgithub.com/pingcap/tidb@v1.1.0-beta.0.20210714111333-67b641d5036c/session/session.go:1381\
github.com/pingcap/tidb/session.(*session).ExecuteInternal\
\tgithub.com/pingcap/tidb@v1.1.0-beta.0.20210714111333-67b641d5036c/session/session.go:1132\
github.com/pingcap/br/pkg/gluetidb.(*tidbSession).Execute\
\tgithub.com/pingcap/br@/pkg/gluetidb/glue.go:109\
github.com/pingcap/br/pkg/restore.(*DB).ExecDDL\
\tgithub.com/pingcap/br@/pkg/restore/db.go:79\
github.com/pingcap/br/pkg/restore.(*Client).ExecDDLs\
\tgithub.com/pingcap/br@/pkg/restore/client.go:500\
github.com/pingcap/br/pkg/task.RunRestore\
\tgithub.com/pingcap/br@/pkg/task/restore.go:320\
main.runRestoreCommand\
\tgithub.com/pingcap/br@/cmd/br/restore.go:25\
main.newFullRestoreCommand.func1\
\tgithub.com/pingcap/br@/cmd/br/restore.go:97\
github.com/spf13/cobra.(*Command).execute\
\tgithub.com/spf13/cobra@v1.0.0/command.go:842\
github.com/spf13/cobra.(*Command).ExecuteC\
\tgithub.com/spf13/cobra@v1.0.0/command.go:950\
github.com/spf13/cobra.(*Command).Execute\
\tgithub.com/spf13/cobra@v1.0.0/command.go:887\
main.main\
\tgithub.com/pingcap/br@/cmd/br/main.go:56\
runtime.main\
\truntime/proc.go:203\
runtime.goexit\
\truntime/asm_amd64.s:1357"] [stack="github.com/pingcap/br/pkg/restore.(*DB).ExecDDL\
\tgithub.com/pingcap/br@/pkg/restore/db.go:81\
github.com/pingcap/br/pkg/restore.(*Client).ExecDDLs\
\tgithub.com/pingcap/br@/pkg/restore/client.go:500\
github.com/pingcap/br/pkg/task.RunRestore\
\tgithub.com/pingcap/br@/pkg/task/restore.go:320\
main.runRestoreCommand\
\tgithub.com/pingcap/br@/cmd/br/restore.go:25\
main.newFullRestoreCommand.func1\
\tgithub.com/pingcap/br@/cmd/br/restore.go:97\
github.com/spf13/cobra.(*Command).execute\
\tgithub.com/spf13/cobra@v1.0.0/command.go:842\
github.com/spf13/cobra.(*Command).ExecuteC\
\tgithub.com/spf13/cobra@v1.0.0/command.go:950\
github.com/spf13/cobra.(*Command).Execute\
\tgithub.com/spf13/cobra@v1.0.0/command.go:887\
main.main\
\tgithub.com/pingcap/br@/cmd/br/main.go:56\
runtime.main\
\truntime/proc.go:203"]
[2022/07/05 09:28:32.470 +08:00] [INFO] [client.go:166] ["Restore client closed"]
注意：全量恢复阶段之前使用过 4.0.1的br工具，但再恢复的时候出现过报错，所以改用了4.0.16