github.com/1aal/kubeblocks@v0.0.0-20231107070852-e1c03e598921/docs/user_docs/kubeblocks-for-mongodb/migration/feature-and-limit-list-mongodb.md (about)

     1  ---
     2  title: Full feature and limit list
     3  description: The full feature and limit list of KubeBlocks migration function for MongoDB
     4  keywords: [mongodb, migration, migrate data in MongoDB to KubeBlocks, full feature, limit]
     5  sidebar_position: 1
     6  sidebar_label: Full feature and limit list
     7  ---
     8  
     9  # Full feature and limit list
    10  
    11  ## Full feature list
    12  
    13  * Precheck
    14    * Database connection
    15    * Database version
    16    * Whether the incremental migration is supported by a database
    17    * Whether the table structure of the source database is supported
    18  * Data initialization
    19    * Supports all major data types
    20  * Incremental data migration
    21    * Supports all major data types
    22    * Support the resumable upload capability of eventual consistency
    23  
    24  ## Limit list
    25  
    26  * Overall limits
    27    * If the incremental data migration is used, the source database should be the master node under the Replica Set structure.
    28    * Except for the incremental data migration module, other modules do not support resumable upload, i.e. if an exception occurs in this module, such as pod failure caused by downtime and network disconnection, a re-migration is required.
    29    * During the data transmission task, operations such as Drop, Rename, and DropDatabase on the migration objects in the source database is not supported.
    30    * The database name and collection name cannot contain Chinese characters and special characters like a single quotation mark (') and a comma (,).
    31    * During the migration process, the switchover of primary and secondary nodes in the source library is not supported, which may cause the connection string specified in the task configuration to change. This further leads to migration link failure.
    32  * Precheck module: None
    33  * Data initialization module
    34    * The database character set other than UTF-8 is not supported.
    35  * Data incremental migration module
    36    * The database character set other than UTF-8 is not supported.