nsivabalan commented on code in PR #12447:
URL: https://github.com/apache/hudi/pull/12447#discussion_r1881147804
##########
hudi-common/src/main/java/org/apache/hudi/metadata/HoodieBackedTableMetadata.java:
##########
@@ -919,4 +886,42 @@ private Map<String, HoodieRecord<HoodieMetadataPayload>>
fetchBaseFileAllRecords
return
SecondaryIndexKeyUtils.getRecordKeyFromSecondaryIndexKey(record.getRecordKey());
}, record -> record));
}
+
+ @VisibleForTesting
+ public static Map<String, String>
reverseLookupSecondaryKeysInternal(List<String> recordKeys,
+
Map<String, HoodieRecord<HoodieMetadataPayload>> baseFileRecords,
+
HoodieMetadataLogRecordReader logRecordScanner) {
+ Map<String, String> recordKeyMap = new HashMap<>();
+ Set<String> keySet = new TreeSet<>(recordKeys);
+ Set<String> deletedRecordsFromLogs = new HashSet<>();
+ Map<String, HoodieRecord<HoodieMetadataPayload>> logRecordsMap = new
HashMap<>();
+ // Note that: we read the log records from the oldest to the latest!!!
+ // If we change the read order, we need update the following logic
accordingly.
+ logRecordScanner.getRecords().forEach(record -> {
+ String recordKey =
SecondaryIndexKeyUtils.getRecordKeyFromSecondaryIndexKey(record.getRecordKey());
+ HoodieMetadataPayload payload = record.getData();
+ if (!payload.isDeleted()) { // process only valid records.
+ if (keySet.contains(recordKey)) {
+ logRecordsMap.put(recordKey, record);
+ }
+ } else {
+ // When and Only when the latest log record is non-tombstone,
logRecordMap contains its recordKey.
+ logRecordsMap.remove(recordKey);
+ deletedRecordsFromLogs.add(recordKey);
+ }
+ });
+
+ // Return non-tombstone records from the log files.
+ logRecordsMap.forEach((key, value) -> recordKeyMap.put(
+ key,
SecondaryIndexKeyUtils.getSecondaryKeyFromSecondaryIndexKey(value.getRecordKey())));
+ // Return non-tombstone records from the base file.
+ if (baseFileRecords != null) {
+ baseFileRecords.forEach((key, value) -> {
+ if (!deletedRecordsFromLogs.contains(key)) {
+ recordKeyMap.put(key,
SecondaryIndexKeyUtils.getSecondaryKeyFromSecondaryIndexKey(value.getRecordKey()));
Review Comment:
why we are not merging the records from base to log records? I understand
in case of secondary index, a record is either created or deleted and there is
no real merge, but lets keep the original code as is and just add fixes on top
of that.
--
This is an automated message from the Apache Git Service.
To respond to the message, please log on to GitHub and use the
URL above to go to the specific comment.
To unsubscribe, e-mail: [email protected]
For queries about this service, please contact Infrastructure at:
[email protected]
