Indhumathi27 commented on a change in pull request #4227:
URL: https://github.com/apache/carbondata/pull/4227#discussion_r736169187
##########
File path:
core/src/main/java/org/apache/carbondata/core/constants/CarbonCommonConstants.java
##########
@@ -2681,4 +2681,61 @@ private CarbonCommonConstants() {
public static final String CARBON_CDC_MINMAX_PRUNING_ENABLED_DEFAULT =
"false";
+
//////////////////////////////////////////////////////////////////////////////////////////
+ // CDC streamer configs start here
+
//////////////////////////////////////////////////////////////////////////////////////////
+
+ /**
+ * Name of the field from source schema whose value can be used for picking
the latest updates for
+ * a particular record in the incoming batch in case of duplicates record
keys. Useful if the
+ * write operation type is UPDATE or UPSERT. This will be used only if
+ * carbon.streamer.upsert.deduplicate is enabled.
+ */
+ @CarbonProperty
+ public static final String CARBON_STREAMER_SOURCE_ORDERING_FIELD =
+ "carbon.streamer.source.ordering.field";
+
+ public static final String CARBON_STREAMER_SOURCE_ORDERING_FIELD_DEFAULT =
"";
+
+ /**
+ * This property specifies if the incoming batch needs to be deduplicated in
case of INSERT
+ * operation type. If set to true, the incoming batch will be deduplicated
against the existing
+ * data in the target carbondata table.
+ */
+ @CarbonProperty
+ public static final String CARBON_STREAMER_INSERT_DEDUPLICATE =
+ "carbon.streamer.insert.deduplicate";
+
+ public static final String CARBON_STREAMER_INSERT_DEDUPLICATE_DEFAULT =
"false";
+
+ /**
+ * This property specifies if the incoming batch needs to be deduplicated
(when multiple updates
+ * for the same record key are present in the incoming batch) in case of
UPSERT/UPDATE operation
+ * type. If set to true, the user needs to provide proper value for the
source ordering field as
+ * well.
+ */
+ @CarbonProperty
+ public static final String CARBON_STREAMER_UPSERT_DEDUPLICATE =
+ "carbon.streamer.upsert.deduplicate";
+
+ public static final String CARBON_STREAMER_UPSERT_DEDUPLICATE_DEFAULT =
"true";
+
+ /**
+ * The metadata columns coming from the source stream data, which should not
be included in the
+ * target data.
+ */
+ @CarbonProperty
+ public static final String CARBON_STREAMER_META_COLUMNS =
"carbon.streamer.meta.columns";
+
+ /**
+ * This flag decides if table schema needs to change as per the incoming
batch schema.
+ * If set to true, incoming schema will be validated with existing table
schema.
+ * If the schema has evolved, the incoming batch cannot be ingested and
+ * job will simply fail.
+ */
+ @CarbonProperty
+ public static final String CARBON_ENABLE_SCHEMA_ENFORCEMENT =
"carbon.enable.schema.enforcement";
Review comment:
please update the documentation for the newly added carbon properties
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