We don't support altering the data type of a column directly. The way I've seen this done is: - create a new column with the new type - copy the old value over, coercing it to the new type (either using UPSERT SELECT or MR) - start using the new column instead of the old column - drop the old column
We have a JIRA for it (PHOENIX-152). In theory, we could automate the above process, doing it asynchronously where the data type change wouldn't take effect until the entire process is complete. Thanks, James On Mon, Oct 19, 2015 at 10:29 AM, ALEX K <[email protected]> wrote: > Is it possible to change data type of column in Apache Phoenix without > losing HBase data? >
