jackylk commented on a change in pull request #3509: [CARBONDATA-3618] Update query should throw exception if key has more than one value
URL:
https://github.com/apache/carbondata/pull/3509#discussion_r361771222
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File path: docs/configuration-parameters.md
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@@ -152,6 +152,7 @@ This section provides the details of all the configurations required for the Car
| carbon.insert.storage.level | MEMORY_AND_DISK | Storage level to persist dataset of a RDD/dataframe. Applicable when ***carbon.insert.persist.enable*** is **true**, if user's executor has less memory, set this parameter to 'MEMORY_AND_DISK_SER' or other storage level to correspond to different environment. [See detail](
http://spark.apache.org/docs/latest/rdd-programming-guide.html#rdd-persistence). |
| carbon.update.persist.enable | true | Configuration to enable the dataset of RDD/dataframe to persist data. Enabling this will reduce the execution time of UPDATE operation. |
| carbon.update.storage.level | MEMORY_AND_DISK | Storage level to persist dataset of a RDD/dataframe. Applicable when ***carbon.update.persist.enable*** is **true**, if user's executor has less memory, set this parameter to 'MEMORY_AND_DISK_SER' or other storage level to correspond to different environment. [See detail](
http://spark.apache.org/docs/latest/rdd-programming-guide.html#rdd-persistence). |
+| carbon.update.validate.key.to.value.mapping | true | By default this property is true, so update will validate key value mapping. This validation might have slight degrade in performance of update query. If user knows that key value mapping is correct, can disable this validation for better update performance by setting this property to false. |
Review comment:
```suggestion
| carbon.update.check.unique.value | true | By default this property is true, so update will validate key value mapping. This validation might have slight degrade in performance of update query. If user knows that key value mapping is correct, can disable this validation for better update performance by setting this property to false. |
```
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