Very slow attachment upload when it's bigger then 10MB

I was trying to upload a file into attachment via ‘blob control’ widget.

I was expecting the operation to be finished within 20s. (1M file take cca 2s, it’s OK)

Instead the operation took approx 90-120s. It’s unbearable.

We tried it on 2016.11 on AGV, but also on older version (2015.4) and another application (coaching). It’s needed on AGV mainly, where they upload 10-20MB big scan files (from flashdisk)

The problem was not particullary in upload, but in getting changes for the row beeing changed (GetChanges RPC call). It used to return also all write-only columns, which is not correct.

Fixed in
master: 4465