FrankChen021 commented on a change in pull request #10383:
URL: https://github.com/apache/druid/pull/10383#discussion_r500970256
##########
File path:
core/src/main/java/org/apache/druid/data/input/IntermediateRowParsingReader.java
##########
@@ -96,23 +99,35 @@ public void close() throws IOException
public CloseableIterator<InputRowListPlusRawValues> sample() throws
IOException
{
return intermediateRowIterator().map(row -> {
- final Map<String, Object> rawColumns;
+
+ final List<Map<String, Object>> rawColumnsList;
try {
- rawColumns = toMap(row);
+ rawColumnsList = toMap(row);
}
catch (Exception e) {
- return InputRowListPlusRawValues.of(null, new ParseException(e,
"Unable to parse row [%s] into JSON", row));
+ return Collections.singletonList(InputRowListPlusRawValues.of(null,
+ new
ParseException(e, "Unable to parse row [%s] into JSON", row)));
}
+
+ List<InputRow> rows;
try {
- return InputRowListPlusRawValues.of(parseInputRows(row), rawColumns);
+ rows = parseInputRows(row);
}
catch (ParseException e) {
- return InputRowListPlusRawValues.of(rawColumns, e);
+ return
Collections.singletonList(InputRowListPlusRawValues.of(rawColumnsList.isEmpty()
? null : rawColumnsList.get(0), e));
Review comment:
To return the entire `rawColumnsList` here involves changes on
`InputRowListPlusRawValues` which are heavily used by test cases.
I checked the code again and find that there's no need to return raw column
object when exception occurs. Because `InputSourceSample` re-throws exception
once `InputRowListPlusRawValues.getParseException` returns exception.
So the new commit passes a `null` to `InputRowListPlusRawValues` to
eliminate this strange code here.
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