Data Engineering Streaming
- Data Engineering Streaming 10.2.2 Service Pack 1
- All Products
Property
| Description
|
---|---|
Tracing level
| Controls the amount of detail in the mapping log file.
|
Target Schema Strategy
| Type of target schema strategy for the target table.
You can select one of the following target schema strategies:
|
DDL Query
| The DDL query based on which the Data Integration Service creates or replace the target table at run time.
You cannot create a custom DDL query that creates or replaces a Hive table at run time in streaming mappings.
|
Truncate target table
| Truncates the target before loading data.
If the mapping target is a Hive partition table, you can choose to truncate the target table only with Hive version 0.11.
|
Truncate Hive Target Partition
| Truncates the external table before loading data.
Streaming mappings do not support this property. The property is ignored.
|
PreSQL
| The SQL command the Data Integration Service runs against the target database before it reads the source.
The Developer tool does not validate the SQL.
|
PostSQL
| The SQL command that the Data Integration Service runs against the target database after it writes to the target.
The Developer tool does not validate the SQL.
Streaming mappings do not support Post-SQL queries. Post-SQL queries in streaming mappings are ignored.
|
Maintain Row Order
| Maintain row order while writing data to the target. Select this option if the Data Integration Service should not perform any optimization that can change the row order.
When the Data Integration Service performs optimizations, it might lose the row order that was established earlier in the mapping. You can establish row order in a mapping with a sorted flat file source, a sorted relational source, or a Sorter transformation. When you configure a target to maintain row order, the Data Integration Service does not perform optimizations for the target.
|