danny0405 commented on code in PR #13566:
URL: https://github.com/apache/hudi/pull/13566#discussion_r2211971290
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hudi-common/src/main/java/org/apache/hudi/common/table/read/KeyBasedFileGroupRecordBuffer.java:
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@@ -133,7 +133,13 @@ public boolean containsLogRecord(String recordKey) {
protected boolean hasNextBaseRecord(T baseRecord) throws IOException {
String recordKey = readerContext.getRecordKey(baseRecord, readerSchema);
- BufferedRecord<T> logRecordInfo = records.remove(recordKey);
+ BufferedRecord<T> logRecordInfo;
+ if (readerContext.getReuseBuffer()) {
+ logRecordInfo = records.get(recordKey);
+ logRecordInfo.setMerged();
Review Comment:
The map could be a spillable map and the value is actually serialized from
disk, just modifying the flag does not work as expected.
My suggestion is we maintain another spillable map for these merged records,
and put them back into the `records` map when initializing for reuse. So that
we can also get rid of these maintainance of these `BufferedRecord.setMerged`
flags and make the code more clear.
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