We now support syncing headerless delimited format files (CSV, TSV, log) for FTPS connectors. We will create generic column names for CSV files without a header line. This feature is in beta and available to all customers. See the configuration options in our files documentation for details.
We have improved the way we track which files we have already synced to make sure we only pull new or changed data from the source containers. Previously, we re-synced files that were created at the same time as the last observed cursor position. That ensured that we never missed any files that were created while we were syncing your data. That also meant that we sometimes synced the same files twice. Now, in addition to tracking the timestamp, we also track the names of the files we have already synced. We store up to 1,000 file names. We sync files created at the time of the last observed cursor position only if we don’t have the file in our list of synced files for that timestamp.