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# ask-community
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Yang

04/13/2023, 10:26 PM
I have a question...I have some different jobs that may use the same partitions of the same assets. Will they always be rematerialized when running the job? Is there a flag for not rematerializing if it's not out of date or something? Thanks!
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c

claire

04/14/2023, 5:18 PM
Hi Yang. As long as those upstream assets aren't selected to be part of those two downstream jobs, running the downstream jobs will not cause the upstream assets to rematerialize. Unfortunately there isn't a flag for not rematerializing if it's not out of date
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Yang

04/14/2023, 9:47 PM
But if the upstream assets are not materialized yet, is there a way to trigger for them to materialize? Just a separate job? Thanks!
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claire

04/14/2023, 9:59 PM
I think the UI will have a warning if the upstream assets aren't materialized, in which case you can also select those upstream assets to manually materialize. But if you wanted to automate the upstream assets to materialize, you could use the asset reconciliation sensor. In next week's release we'll also introduce an auto-materialize policy that might be what you're looking for.
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Yang

04/14/2023, 11:10 PM
Oh! Ok great