Questions about Row Storage to Column Storage Conversion

This topic has been translated from a Chinese forum by GPT and might contain errors.

Original topic: 行存储转列存储疑问

| username: swino

After converting row data to column data, the storage space for row data did not decrease.

| username: zhanggame1 | Original post link

Specifically, how did you transfer it? Was it on TiDB?

| username: Jasper | Original post link

If you are talking about converting TiKV to TiFlash, generating a TiFlash replica will not change the original data on the TiKV side, it will just add a columnar storage replica based on the original data.
Reference: TiFlash 简介 | PingCAP 文档中心

| username: Kongdom | Original post link

Where did you view this monitoring?

| username: ShawnYan | Original post link

Same question, which monitoring screen is this, and how are these two values calculated?

| username: zhaokede | Original post link

This only adds a Tiflase replica, and the storage space for row data will not decrease.

| username: system | Original post link

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