| title | description | author | ms.author | ms.date | ms.service | ms.subservice | ms.topic | dev_langs | monikerRange | |
|---|---|---|---|---|---|---|---|---|---|---|
sys.dm_pdw_hadoop_operations (Transact-SQL) |
sys.dm_pdw_hadoop_operations (Transact-SQL) |
WilliamDAssafMSFT |
wiassaf |
03/06/2017 |
sql |
data-warehouse |
reference |
|
>=aps-pdw-2016||=azure-sqldw-latest |
[!INCLUDEapplies-to-version/asa-pdw]
Contains a row for each map-reduce job that is pushed down to Hadoop as part of running a [!INCLUDEssazuresynapse-md] query on an external Hadoop table. Each map-reduce job represents one of the predicates in the query. This is only used when predicate pushdown is enabled for queries on Hadoop external tables.
Note
[!INCLUDEsynapse-analytics-od-unsupported-syntax]
| Column Name | Data Type | Description | Range |
|---|---|---|---|
| request_id | nvarchar(32) | ID for this external Hadoop operation. | Same as ID in sys.dm_pdw_exec_requests (Transact-SQL). |
| step_index | int | Index of the query step that refers to this Hadoop operation. | Same as step_index in sys.dm_pdw_request_steps (Transact-SQL). |
| operation_type | nvarchar(255) | Describes the type of external operation. | 'External Hadoop Operation' |
| operation_name | nvarchar(4000) | The job ID for a map-reduce job. This is returned by Hadoop after [!INCLUDEssazuresynapse-md] submits the job. | |
| map_progress | float | The percentage of input data that has been consumed so far by the map job. | A floating point number between, and including, 0 and 100. |
| reduce_progress | int | The percentage of the reduce job that has completed.. | A floating point number between, and including, 0 and 100. |