Checkpointing and Restarting
The Export operator takes a checkpoint only when all data is sent to the data stream. If a restart occurs, the operator either must send all of the data or none of the data depending on whether the checkpoint has taken place.
Restart indicates that this export job completed.
The Export operator does not support a user-defined restart log table.
Notice:
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If a checkpoint interval is specified on the tbuild command line, the checkpoints incurred between the start of data loading and the
end of data loading are ignored by the Export operator.
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