gaodayue opened a new issue #2450: [V2 Format] encoding of ColumnMetaPB should not be DEFAULT_ENCODING URL: https://github.com/apache/incubator-doris/issues/2450 **Describe the bug** Currently all columns use DEFAULT_ENCODING as `ColumnMetaPB.encoding`. However we may change the default encoding type for a data type in the future, therefore concrete encoding type such as PLAIN_ENCODING/BIT_SHUFFLE should be stored in column meta in order to support encoding evolution.
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