One Tablet have three replicas, the compaction progress is different. Considering the following scenario, replica A have 3 versions(1, 2, 3); replica B have 2 versions(1-2, 3); replica C have 1 versions(1-3). Now a column named city been added with default zero 1. Replica A will be resulted as 3, replica B results as 2, replica C results as 1. So there is a necessity to restrict the default value to zero for SUM aggregation column.
# 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