Welcome to OGeek Q&A Community for programmer and developer-Open, Learning and Share
Welcome To Ask or Share your Answers For Others

Categories

0 votes
677 views
in Technique[技术] by (71.8m points)

databricks - Delta table versioning while writing from a Spark structured streaming job

Will writing to a Delta table from a Spark structured streaming job create a version for every micro batch of data written?

question from:https://stackoverflow.com/questions/65869668/delta-table-versioning-while-writing-from-a-spark-structured-streaming-job

与恶龙缠斗过久,自身亦成为恶龙;凝视深渊过久,深渊将回以凝视…
Welcome To Ask or Share your Answers For Others

1 Reply

0 votes
by (71.8m points)

From the docs:

As you write into a Delta table or directory, every operation is automatically versioned.

So, yes you are correct.

Getting the data:

  • Using a timestamp

  • Using version number

Reference: https://databricks.com/blog/2019/02/04/introducing-delta-time-travel-for-large-scale-data-lakes.html


与恶龙缠斗过久,自身亦成为恶龙;凝视深渊过久,深渊将回以凝视…
OGeek|极客中国-欢迎来到极客的世界,一个免费开放的程序员编程交流平台!开放,进步,分享!让技术改变生活,让极客改变未来! Welcome to OGeek Q&A Community for programmer and developer-Open, Learning and Share
Click Here to Ask a Question

...