THIS IS A TEST INSTANCE. ALL YOUR CHANGES WILL BE LOST!!!!

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* [DSIP-014](https://cwiki.apache.org/confluence/display/DORIS/DSIP-014%3A+Multi+Catalog+Support)

## 5. New Optimizer: Nereids (EmmyMiao87, morrySnow)

* [Project-18](https://github.com/apache/doris/projects/18)

## 5. Light weight schema change [dataroaring, yiguolei]

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