npawar commented on a change in pull request #5597:
URL: https://github.com/apache/incubator-pinot/pull/5597#discussion_r444542186
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File path:
pinot-spi/src/main/java/org/apache/pinot/spi/data/readers/GenericRow.java
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@@ -49,7 +49,17 @@
*/
public class GenericRow {
+ /**
+ * This key is used by a Decoder/RecordReader to handle 1 record to many
records flattening.
+ * If a Decoder/RecordReader produces multiple GenericRows from the given
record, they must be put into the destination GenericRow as a List<GenericRow>
with this key
+ * The segment generation drivers handle this key as a special case and
process the multiple records
+ */
public static final String MULTIPLE_RECORDS_KEY = "$MULTIPLE_RECORDS_KEY$";
+ /**
+ * This key is used by the FilterTransformer to handle filtering out of
records during ingestion
+ * The FilterTransformer puts this key into the GenericRow with value true,
if the record matches the filtering out criteria, based on FilterConfig
+ */
+ public static final String FILTER_RECORD_KEY = "$FILTER_RECORD_KEY$";
Review comment:
yes SKIP_RECORD_KEY sounds better than FILTER. Renamed.
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