DMS - 持续复制由于 Redshift 集群维护导致重复记录

【以下的问题经过翻译处理】 你好，

我在使用DMS进行数据同步时遇到了问题。每周目标Redshift集群进行维护工作会导致少量重复记录，其中一个cloudwatch日志中的错误提示是 Failed to start rollback apply transaction，看起来像是DMS无法撤销批处理操作，由于 RecoverableErrorCount 设置为-1，所以进程会从之前已经运行的批次重新尝试进行持续复制，从而导致记录重复。

是否有通过DMS设置处理由于集群维护所引起的回滚失败问题的方法？或者有没有解决集群维护问题的方法？

谢谢！

以下是我的设置：

数据源：Mysql 目标：Redshift

{ "ErrorBehavior": { "FailOnNoTablesCaptured": true, "ApplyErrorUpdatePolicy": "SUSPEND_TABLE", "FailOnTransactionConsistencyBreached": true, "RecoverableErrorThrottlingMax": 1800, "DataErrorEscalationPolicy": "SUSPEND_TABLE", "ApplyErrorEscalationCount": 5, "RecoverableErrorStopRetryAfterThrottlingMax": true, "RecoverableErrorThrottling": true, "ApplyErrorFailOnTruncationDdl": false, "DataTruncationErrorPolicy": "SUSPEND_TABLE", "ApplyErrorInsertPolicy": "SUSPEND_TABLE", "EventErrorPolicy": "IGNORE", "ApplyErrorEscalationPolicy": "SUSPEND_TABLE", "RecoverableErrorCount": -1, "DataErrorEscalationCount": 5, "TableErrorEscalationPolicy": "SUSPEND_TABLE", "RecoverableErrorInterval": 5, "ApplyErrorDeletePolicy": "SUSPEND_TABLE", "TableErrorEscalationCount": 5, "FullLoadIgnoreConflicts": true, "DataErrorPolicy": "SUSPEND_TABLE", "TableErrorPolicy": "SUSPEND_TABLE" }, "TTSettings": { "TTS3Settings": null, "TTRecordSettings": null, "EnableTT": false }, "FullLoadSettings": { "CommitRate": 10000, "StopTaskCachedChangesApplied": false, "StopTaskCachedChangesNotApplied": false, "MaxFullLoadSubTasks": 8, "TransactionConsistencyTimeout": 1200, "CreatePkAfterFullLoad": false, "TargetTablePrepMode": "DROP_AND_CREATE" }, "TargetMetadata": { "ParallelApplyBufferSize": 10000, "ParallelApplyQueuesPerThread": 0, "ParallelApplyThreads": 32, "TargetSchema": "", "InlineLobMaxSize": 0, "ParallelLoadQueuesPerThread": 0, "SupportLobs": true, "LobChunkSize": 0, "TaskRecoveryTableEnabled": true, "ParallelLoadThreads": 32, "LobMaxSize": 63, "BatchApplyEnabled": true, "FullLobMode": false, "LimitedSizeLobMode": true, "LoadMaxFileSize": 0, "ParallelLoadBufferSize": 1000 }, "BeforeImageSettings": null, "ControlTablesSettings": { "historyTimeslotInMinutes": 5, "HistoryTimeslotInMinutes": 5, "StatusTableEnabled": true, "SuspendedTablesTableEnabled": true, "HistoryTableEnabled": true, "ControlSchema": "dms_control", "FullLoadExceptionTableEnabled": true }, "LoopbackPreventionSettings": null, "CharacterSetSettings": null, "FailTaskWhenCleanTaskResourceFailed": false, "ChangeProcessingTuning": { "StatementCacheSize": 50, "CommitTimeout": 1, "BatchApplyPreserveTransaction": true, "BatchApplyTimeoutMin": 1, "BatchSplitSize": 0, "BatchApplyTimeoutMax": 30, "MinTransactionSize": 1000, "MemoryKeepTime": 60, "BatchApplyMemoryLimit": 500, "MemoryLimitTotal": 1024 }, "ChangeProcessingDdlHandlingPolicy": { "HandleSourceTableDropped": true, "HandleSourceTableTruncated": true, "HandleSourceTableAltered": true }, "PostProcessingRules": null }