+1
On Fri, Apr 3, 2026 at 5:03 PM Mich Talebzadeh <[email protected]> wrote: > +1 > > Dr Mich Talebzadeh, > Data Scientist | Distributed Systems (Spark) | Financial Forensics & > Metadata Analytics | Transaction Reconstruction | Audit & Evidence-Based > Analytics > > view my Linkedin profile > <https://www.linkedin.com/in/mich-talebzadeh-ph-d-5205b2/> > > > > > > On Fri, 3 Apr 2026 at 23:00, Andreas Neumann <[email protected]> wrote: > >> Hi Spark devs, >> >> I'd like to call a vote on the SPIP*: Auto CDC Support for Apache Spark* >> Motivation >> >> With the upcoming introduction of standardized CDC support >> <https://issues.apache.org/jira/browse/SPARK-55668>, Spark will soon >> have a unified way to produce change data feeds. However, consuming these >> feeds and applying them to a target table remains a significant challenge. >> >> Common patterns like SCD Type 1 (maintaining a 1:1 replica) and SCD Type >> 2 (tracking full change history) often require hand-crafted, complex >> MERGE logic. In distributed systems, these implementations are >> frequently error-prone when handling deletions or out-of-order data. >> Proposal >> >> This SPIP proposes a new "Auto CDC" flow type for Spark. It encapsulates >> the complex logic for SCD types and out-of-order data, allowing data >> engineers to configure a declarative flow instead of writing manual MERGE >> statements. >> This feature will be available in both Python and SQL. >> >> Example SQL: >> >> -- Produce a change feed >> >> CREATE STREAMING TABLE cdc.users AS >> >> SELECT * FROM STREAM my_table CHANGES FROM VERSION 10; >> >> >> -- Consume the change feed >> >> CREATE FLOW flow >> >> AS AUTO CDC INTO >> >> target >> >> FROM stream(cdc_data.users) >> >> KEYS (userId) >> >> APPLY AS DELETE WHEN operation = "DELETE" >> >> SEQUENCE BY sequenceNum >> >> COLUMNS * EXCEPT (operation, sequenceNum) >> >> STORED AS SCD TYPE 2 >> >> TRACK HISTORY ON * EXCEPT (city); >> >> >> *Relevant Links:* >> >> - SPIP Document: >> >> https://docs.google.com/document/d/1Hp5BGEYJRHbk6J7XUph3bAPZKRQXKOuV1PEaqZMMRoQ/ >> - >> >> *Discussion Thread: * >> https://lists.apache.org/thread/j6sj9wo9odgdpgzlxtvhoy7szs0jplf7 >> - >> >> JIRA: <https://issues.apache.org/jira/browse/SPARK-55668> >> https://issues.apache.org/jira/browse/SPARK-56249 >> >> *The vote will be open for at least 72 hours. *Please vote: >> >> [ ] +1: Accept the proposal as an official SPIP >> [ ] +0 >> [ ] -1: I don't think this is a good idea because ... >> Cheers -Andreas >> >> >>
