Jackie-Jiang commented on code in PR #11604:
URL: https://github.com/apache/pinot/pull/11604#discussion_r1332359396
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pinot-segment-local/src/main/java/org/apache/pinot/segment/local/realtime/impl/json/MutableJsonIndexImpl.java:
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@@ -106,8 +106,11 @@ private void addFlattenedRecords(List<Map<String, String>>
records) {
// Put both key and key-value into the posting list. Key is useful for
checking if a key exists in the json.
String key = entry.getKey();
_postingListMap.computeIfAbsent(key, k -> new
RoaringBitmap()).add(_nextFlattenedDocId);
- String keyValue = key + JsonIndexCreator.KEY_VALUE_SEPARATOR +
entry.getValue();
- _postingListMap.computeIfAbsent(keyValue, k -> new
RoaringBitmap()).add(_nextFlattenedDocId);
+ int length = _jsonIndexConfig.getMaxValueLength();
Review Comment:
Truncating the value won't really work in the current JSON index because we
can only do exact match.
Using the current json index storage format to support group-by is almost
not possible. I discussed this with @yupeng9 and I believe the idea is to
extract the column instead of using the json index to power group-by.
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