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  1. Flink
  2. FLINK-29367

Avoid manifest corruption for incorrect checkpoint recovery

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      When the job runs to checkpoint N, if the user recovers from an old checkpoint (such as checkpoint N-5), the sink of the current FTS will cause a manifest corruption because duplicate files may be committed.

      We should avoid such corruption, and the storage should be robust enough.

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            TsReaper Caizhi Weng
            lzljs3620320 Jingsong Lee
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