Delta table version protocol

[noname123]

I do:

df.write.format("delta").mode("append").partitionBy("timestamp").option("mergeSchema", "true").save(destination)

If table doesn't exist, it creates new table with "minReaderVersion":3,"minWriterVersion":7.

Yesterday it was creating table with "minReaderVersion":1,"minWriterVersion":2. I changed nothing and now versions are different. Setting delta protocol version on cluster does nothing.

This causes breaking change to me because some tables are used by Azure Data Factory and it's not compatible.

[noname123 · Accepted solution]

Thanks for help.

Issue was caused by "Auto-Enable Deletion Vectors" setting. 

[AddBox45]

hello how did you fix this explicitly?how did you enable/disable the auto-enable deletion vectors setting to write again with minReaderVersion 1 and minWriterVersion 2?