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Recursive hadd #66

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clelange opened this issue Feb 7, 2024 · 0 comments
Open

Recursive hadd #66

clelange opened this issue Feb 7, 2024 · 0 comments

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@clelange
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clelange commented Feb 7, 2024

A future feature that you pitched was to support hadd (as in $ROOTSYS/bin/hadd). One common issue is that if one wants to hadd a large number of files, e.g. from hundreds of batch jobs, this leads to very high memory usage. The workaround typically is to do this recursively, see e.g. https://gist.github.com/Nepomuk/588832a90824b634ad01 and https://gist.github.com/AndiH/121e3d89fc647fb65338

When implementing such a feature for hepconvert, it would be nice to preempt such limitations.

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