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1. The URI format of KylinConfig is not backward compatible, for it fetches metadata storage information by http request, older version may not be supported.
2. only one of "-cube", "-srcProject", "-allCubes" could be specified.
3. "-migrateSegment" will not be able to migrate segment data from older version to 4.0, because storage type is switched from HBase to Parquet.
4. CubeMigrationCli will reload target cluster's metadata, we don't have to restart target cluster.

Migrate

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metadata from HBase to Kylin 4

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HBase will be removed after KYLIN 4.0. If you are migrating metadata stored in HBase to 4.x cluster, you are required to do an additional step:

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