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Improve out-of-order revision processing

Andrés Ezequiel Viso requested to merge generated-differential-D5847-source into generated-differential-D5847-target

Fix issue when processing revision in batch

If any revision in the batch was invalidating a frontier, the commit of the complete batch failed. This is now fixed.

Refine maxdate calculation

Improve out-of-order revision processing

Added a flag to the IsochroneNode to identify invalidated frontiers and force its update later when processing the graph. This should guarantee the same results when processing revision one-by-one vs. in batches (in terms of db rows).

Remove directory_invalidate_in_isochrone_frontier method from provenance interface

It was meant to be used in a multi-thread scenario which is not possible due to Python's lack of actual parallelism. This way the build_isochrone_graph function is guaranteed not to modify the DB (it performs only reads now). Also the isochrone graph test was updated to use revision_add with a new flag to avoid commits, hence emulating the batch processing behaviour.

Depends on !34 (closed)

Migrated from D5847 (view on Phabricator)

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