weixiangsun commented on a change in pull request #7781:
URL: https://github.com/apache/pinot/pull/7781#discussion_r751571429
##########
File path:
pinot-core/src/main/java/org/apache/pinot/core/query/selection/SelectionOperatorUtils.java
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@@ -339,6 +339,74 @@ public static DataTable
getDataTableFromRows(Collection<Object[]> rows, DataSche
return dataTableBuilder.build();
}
+ /**
+ * The default value for each column type.
+ */
+ public static Serializable getDefaultValue(ColumnDataType dataType) {
+ switch (dataType) {
+ // Single-value column
+ case INT:
+ return THREAD_LOCAL_INT_FORMAT.get().format(((Number) 0).intValue());
+ case LONG:
+ return THREAD_LOCAL_LONG_FORMAT.get().format(((Number) 0).longValue());
+ case FLOAT:
+ return THREAD_LOCAL_FLOAT_FORMAT.get().format(((Number)
0).floatValue());
+ case DOUBLE:
+ return THREAD_LOCAL_DOUBLE_FORMAT.get().format(((Number)
0).doubleValue());
+ case BOOLEAN:
+ return "false";
+ case TIMESTAMP:
+ return new Timestamp(0L).toString();
+ // NOTE: Return String for BYTES columns for backward-compatibility
+ case BYTES:
+ return "";
+
+ // Multi-value column
+ case INT_ARRAY:
+ DecimalFormat intFormat = THREAD_LOCAL_INT_FORMAT.get();
+ int[] ints = new int[0];
Review comment:
Yes, this is default value for gapfill.
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