Fabric Data Warehouse Writer runtime considerations
Fabric Data Warehouse Writer monitoring metrics
The following monitoring metrics are published by Fabric Data Warehouse Writer:
External I/O Latency: Time duration to complete I/O.
Last Checkpointed Position: Value of the last checkpointed position.
Last I/O Size: Size of the last upload in bytes.
Last I/O Time: Timestamp of the last I/O.
Last Uploaded Filename: Name of the last uploaded file.
Total Events In Last Upload: Total number of events in the last upload.
Limitations
The following limitations apply to Fabric Data Warehouse Writer:
Auto schema conversion using the wizard is not supported with Fabric Data Warehouse Writer.
Special characters are not supported as a part of table names and schema names.
Schema, table and column names with the same name but different cases are not supported.
Source tables should not have more than 511 columns when using Optimized Merge mode, or 1022 columns when using Merge mode. This is because of Fabric’s limit of 1024 columns per table.