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Users cannot run bootstrap in parallel. They need to finish the bootstrap of a non-hudi table into Hudi first, and then start single or multi writers. Rollback of failed bootstrap’s are also inline at the moment. To entertain the option proposed above, the inline rollback from bootstraps will also need to be removed and follow the similar clean up model as inline rollback for regular writers. 



Metadata Table

As of  RFC-15 (HUDI-1292) there will only be a single writer to the consolidated metadata. We need to ensure that only a single writer updates the metadata table at any point of time. Applying the same changes twice is OK. The reconciliation of the metadata will be done by the metadata reader which will see unique instant times and corresponding metadata.