When does Cassandra DB index data after updating a column as secondary index

问题

I've a created a secondary index by using update column ... from cassandra-cli , then I tested by using commnand get User where code = 'MX' , code was the column I put as index, this command just returns data inserted after index creation, but data before is not returned , I thought that previous data would be indexed too , anyone has a clue? thanks in advance

回答1:

In Cassandra, secondary index starts working only after it is being created. Go through the SecondaryIndex class in apache-cassandra library. It will help you in understanding.

回答2:

You may find this helpful Cassandra secondary indexes

来源：https://stackoverflow.com/questions/10401781/when-does-cassandra-db-index-data-after-updating-a-column-as-secondary-index