The `defineExpr` in `Column` must be analyzed before calling its `treeToThrift` method. And fro CreateReplicaTask, no need to set `defineExpr` in TColumn.
# fe-common This module is used to store some common classes of other modules. # spark-dpp This module is Spark DPP program, used for Spark Load function. Depends: fe-common # fe-core This module is the main process module of FE. Depends: fe-common, spark-dpp