Talend tHash components are great but fiddly

The tHash component in Talend is a really useful way of caching data in a flow for use in a lookup or for self-joins and loads of other useful things. However it has one fiddly draw back which is that you have to make sure the schema of the input matches the output every time you use it. Wouldn’t it be great if you could just specify the schema on the tHash output component and have it propagate to all the tHash inputs that link to it?

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