Hello Sreeni, When a write occurs to Cassandra, the operations is first stored in the commit log. Write operation means: insert/update, delete or column family change.
You can check the following explanations regarding the use of commit logs. - http://cassandra.apache.org/doc/latest/architecture/storage_engine.html#commitlog - https://stackoverflow.com/questions/34592948/what-is-the-purpose-of-cassandras-commit-log Regards, Horia On Mon, Feb 11, 2019 at 1:17 AM Sreenivasulu Nallapati < sreeni.nallap...@gmail.com> wrote: > Hi, > > I was wondering what is there in the commit-log. May be some examples with > below events > 1. Insert - only inserting data? > 2. Update - will it have before after change? > 3. Delete - will it have before and after change? > 4. DDL - ? > > Please help me to understand > > Thanks > Sreeni > -- <http://bookreader.ro>