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Zhong Yanghong commented on KYLIN-3739: --------------------------------------- Hi [~Shaofengshi], there's no impact on the data under '/table_snapshot'. * In CubeInstance & CubeSegment, there's a map for snapshots. The value will not be changed. Only the key will be replaced by table alias instead of table identity. * In CubeDesc, there's a list of SnapshotTableDesc for cube-level snapshots. In SnapshotTableDesc, the tableName should be table alias instead of table identity. > Use table alias rather than table identity for snapshots in CubeSegment, > CubeInstance, CubeDesc > ----------------------------------------------------------------------------------------------- > > Key: KYLIN-3739 > URL: https://issues.apache.org/jira/browse/KYLIN-3739 > Project: Kylin > Issue Type: Improvement > Components: Metadata > Reporter: Zhong Yanghong > Priority: Major > > In 2.0.0, Kylin introduced table alias in DataModelDesc. Most of the elements > in CubeDesc, CubeInstance & CubeSegment use the table alias rather than the > table identity. However, for the lookup table snapshots, it still uses table > identity. > It's better for us to use only table alias instead of table identity in > CubeDesc, CubeInstance & CubeSegment. If so, it can provide several > advantages: > # For CubeDesc, CubeInstance & CubeSegment, what exposed to them is only the > snowflake model and they don't need to care which real table is used. > # If users want to change the table name in the snowflake model, we can still > keep the table alias unchanged and what we need to change is only the > DataModelDesc. And we don't need to do any change for CubeDesc, CubeInstance > & CubeSegment. -- This message was sent by Atlassian JIRA (v7.6.3#76005)