nsivabalan commented on code in PR #5030:
URL: https://github.com/apache/hudi/pull/5030#discussion_r965448515
##########
hudi-common/src/main/java/org/apache/hudi/common/table/log/HoodieMergedLogRecordScanner.java:
##########
@@ -123,25 +133,24 @@ public long getNumMergedRecordsInLog() {
return numMergedRecordsInLog;
}
- /**
- * Returns the builder for {@code HoodieMergedLogRecordScanner}.
- */
- public static HoodieMergedLogRecordScanner.Builder newBuilder() {
- return new Builder();
- }
-
@Override
protected void processNextRecord(HoodieRecord<? extends HoodieRecordPayload>
hoodieRecord) throws IOException {
String key = hoodieRecord.getRecordKey();
if (records.containsKey(key)) {
// Merge and store the merged record. The HoodieRecordPayload
implementation is free to decide what should be
// done when a delete (empty payload) is encountered before or after an
insert/update.
-
- HoodieRecord<? extends HoodieRecordPayload> oldRecord = records.get(key);
- HoodieRecordPayload oldValue = oldRecord.getData();
- HoodieRecordPayload combinedValue =
hoodieRecord.getData().preCombine(oldValue);
- // If combinedValue is oldValue, no need rePut oldRecord
- if (combinedValue != oldValue) {
+ HoodieRecord<? extends HoodieRecordPayload> storeRecord =
records.get(key);
+ HoodieRecordPayload storeValue = storeRecord.getData();
+ HoodieRecordPayload combinedValue;
+ // If revertLogFile = false, storeRecord is the old record.
+ // If revertLogFile = true, incoming data (hoodieRecord) is the old
record.
+ if (!revertLogFile) {
Review Comment:
oh I see we have put in a fix here. sounds good.
but does below one holds good?
```
delta commit1: insert rec1: val1. preCombine: 2
delta commit2: delete rec1:
delta commit2: insert rec1: val2. preCombine: 1
```
as per master,
guess final snapshot will return val2 for rec1. and not the deleted one.
can you tell me what will happen w/ this patch where in we reverse the
ordering.
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