Hi @Abhijit, I think you are talking about the following scenario - you have two streams of documents that are being combined through the use of the Union Snap, but the order of the documents that was originally present in both streams has been lost, like so:
If this is what you are describing, this is the nature of SnapLogic’s streaming architecture - documents are streamed into downstream Snaps as soon as they become available. If you wish to impose a natural order again, I would recommend using the Sort Snap immediately after the Union Snap:
Is this what you were experiencing? If not, please let me know and perhaps share a screenshot of what is happening.
In addition to Robin’s comment on this. If you have a source that doesn’t give you a ‘natural’ ordering, you can pass it through the Sequence snap to add a sequential value field. Then, later, you can use the Sort snap to put everything back in order.
