Github user vandana7 commented on a diff in the pull request:
https://github.com/apache/carbondata/pull/1219#discussion_r131824879
--- Diff: docs/configuration-parameters.md ---
@@ -143,5 +144,87 @@ This section provides the details of all the
configurations required for CarbonD
|----------------------------------------|--------------------------------------------------------|---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| spark.driver.memory | 1g | Amount of memory to be used by the driver
process. |
| spark.executor.memory | 1g | Amount of memory to be used per executor
process. |
-
-
+
+## Dynamic Configuration In CarbonData Using SET-RESET
+
+**SET/RESET** commands are used to add, update, display, or reset the
carbondata properties dynamically without restarting the driver.
+
+**Syntax**
+
+* **Add or Update :** This command adds or updates the value of
parameter_name.
+
+```
+SET parameter_name=parameter_value
+```
+
+* Display Property Value: This command displays the value of the specified
parameter_name.
+
+```
+SET parameter_name
+```
+
+* Display Session Parameters: This command displays all the supported
session parameters.
+
+```
+SET
+```
+
+* Display Session Parameters along with usage details: This command
displays all the supported session parameters along with their usage details.
+
+```
+SET -v
+```
+
+* Reset: This command clears all the session parameters.
+
+```
+RESET
+```
+
+ **Parameter Description:**
+
+| Parameter | Description
|
+|-----------------|----------------------------------------------------------------------------------------|
+| parameter_name | Name of the property whose value needs to be
dynamically added, updated, or displayed. |
+| parameter_value | New value of the parameter_name to be set.
|
+
+<b><p align="center">Dynamically Configurable Properties of
CarbonData</p></b>
+
+| Properties | Description
|
+|------------------------------------------|------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
+| carbon.options.bad.records.logger.enable | To enable or disable bad
record logger.
|
+| carbon.options.bad.records.action | This property can have four
types of actions for bad records FORCE, REDIRECT, IGNORE and FAIL. If set to
FORCE then it auto-corrects the data by storing the bad records as NULL. If set
to REDIRECT then bad records are written to the raw CSV instead of being
loaded. If set to IGNORE then bad records are neither loaded nor written to the
raw CSV. If set to FAIL then data loading fails if any bad records are found.
|
+| carbon.options.is.empty.data.bad.record | If false, then empty ("" or
'' or ,,) data will not be considered as bad record and vice versa.
|
+| carbon.options.sort.scope | This property can have four
possible values BATCH_SORT, LOCAL_SORT, GLOBAL_SORT and NO_SORT. If set to
BATCH_SORT, the sorting scope is smaller and more index tree will be
created,thus loading is faster but query maybe slower. If set to LOCAL_SORT,
the sorting scope is bigger and one index tree per data node will be created,
thus loading is slower but query is faster. If set to GLOBAL_SORT, the sorting
scope is bigger and one index tree per task will be created, thus loading is
slower but query is faster. If set to NO_SORT data will be loaded in unsorted
manner. |
--- End diff --
Hi jackylk
I found this description of global_sort from carbonCommonConstants Class,if
it is not correct please tell me from where i can get correct description for
the same.
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