yihua commented on code in PR #12594:
URL: https://github.com/apache/hudi/pull/12594#discussion_r1929380642
##########
hudi-common/src/main/java/org/apache/hudi/common/table/log/block/HoodieDataBlock.java:
##########
@@ -84,19 +86,32 @@ public HoodieDataBlock(List<HoodieRecord> records,
Map<FooterMetadataType, String> footer,
String keyFieldName) {
super(header, footer, Option.empty(), Option.empty(), null, false);
- if (shouldWriteRecordPositions) {
- records.sort((o1, o2) -> {
- long v1 = o1.getCurrentPosition();
- long v2 = o2.getCurrentPosition();
- return Long.compare(v1, v2);
- });
- if (isPositionValid(records.get(0).getCurrentPosition())) {
- addRecordPositionsToHeader(
-
records.stream().map(HoodieRecord::getCurrentPosition).collect(Collectors.toSet()),
- records.size());
+ if (shouldWriteRecordPositions && !records.isEmpty()) {
+ String baseFileInstantTime =
records.get(0).getCurrentBaseFileInstantTime();
+ for (HoodieRecord record : records) {
+ if
(!baseFileInstantTime.equals(record.getCurrentBaseFileInstantTime())) {
+ baseFileInstantTime = EMPTY_STRING;
+ break;
+ }
+ }
+ if (StringUtils.isNullOrEmpty(baseFileInstantTime)) {
+ LOG.warn("Base file instant time of delete positions cannot be
determined, possibly "
+ + "due to inserts or different base file instant times for the
input records.");
} else {
- LOG.warn("There are records without valid positions. "
- + "Skip writing record positions to the data block header.");
+ records.sort((o1, o2) -> {
+ long v1 = o1.getCurrentPosition();
+ long v2 = o2.getCurrentPosition();
+ return Long.compare(v1, v2);
+ });
+ if (isPositionValid(records.get(0).getCurrentPosition())) {
Review Comment:
There could inserts added to the log blocks, and inserts do not have current
position, i.e., the record does not exist in the file group or base file.
Since the records are sorted based on the positions, if the position of the
first record is valid (>=0), then positions of all records are valid, i.e.,
non-negative.
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