deepthi912 commented on code in PR #17324:
URL: https://github.com/apache/pinot/pull/17324#discussion_r2647275330
##########
pinot-segment-local/src/main/java/org/apache/pinot/segment/local/upsert/BasePartitionUpsertMetadataManager.java:
##########
@@ -669,27 +673,59 @@ public void replaceSegment(ImmutableSegment segment,
@Nullable ThreadSafeMutable
// of the other server
_logger.warn(
"Found {} primary keys not replaced when replacing segment: {} for
upsert table with dropOutOfOrderRecord"
- + " enabled with no consistency mode. This can potentially
cause inconsistency between replicas",
- numKeysNotReplaced, segmentName);
+ + " enabled with no consistency mode. This can potentially
cause inconsistency between replicas. "
+ + "Reverting metadata changes and triggering segment
replacement.", numKeysNotReplaced, segmentName);
_serverMetrics.addMeteredTableValue(_tableNameWithType,
ServerMeter.REALTIME_UPSERT_INCONSISTENT_ROWS,
numKeysNotReplaced);
+ // Revert consuming segment pks to previous segment locations and
perform metadata replacement again
+ revertSegmentUpsertMetadata(segment, validDocIds, queryableDocIds,
oldSegment, segmentName,
+ validDocIdsForOldSegment);
} else if (_partialUpsertHandler != null) {
// For partial-upsert table, because we do not restore the original
record location when removing the primary
// keys not replaced, it can potentially cause inconsistency between
replicas. This can happen when a
// consuming segment is replaced by a committed segment that is
consumed from a different server with
// different records (some stream consumer cannot guarantee consuming
the messages in the same order/
// when a segment is replaced with lesser consumed rows from the other
server).
_logger.warn("Found {} primary keys not replaced when replacing
segment: {} for partial-upsert table. This "
- + "can potentially cause inconsistency between replicas",
numKeysNotReplaced, segmentName);
+ + "can potentially cause inconsistency between replicas. "
+ + "Reverting metadata changes and triggering segment
replacement.", numKeysNotReplaced, segmentName);
_serverMetrics.addMeteredTableValue(_tableNameWithType,
ServerMeter.PARTIAL_UPSERT_KEYS_NOT_REPLACED,
numKeysNotReplaced);
+ // Revert consuming segment pks to previous segment locations and
perform metadata replacement again
+ revertSegmentUpsertMetadata(segment, validDocIds, queryableDocIds,
oldSegment, segmentName,
+ validDocIdsForOldSegment);
} else {
_logger.info("Found {} primary keys not replaced when replacing
segment: {}", numKeysNotReplaced, segmentName);
}
removeSegment(oldSegment, validDocIdsForOldSegment);
}
}
+ private void revertSegmentUpsertMetadata(ImmutableSegment segment,
ThreadSafeMutableRoaringBitmap validDocIds,
+ ThreadSafeMutableRoaringBitmap queryableDocIds, IndexSegment oldSegment,
String segmentName,
+ MutableRoaringBitmap validDocIdsForOldSegment) {
+ revertCurrentSegmentUpsertMetadata(oldSegment, validDocIds,
queryableDocIds);
+ validDocIdsForOldSegment = getValidDocIdsForOldSegment(oldSegment);
+ try (UpsertUtils.RecordInfoReader recordInfoReader = new
UpsertUtils.RecordInfoReader(segment, _primaryKeyColumns,
+ _comparisonColumns, _deleteRecordColumn)) {
+ Iterator<RecordInfo> latestRecordInfoIterator =
+ UpsertUtils.getRecordInfoIterator(recordInfoReader,
segment.getSegmentMetadata().getTotalDocs());
+ addOrReplaceSegment((ImmutableSegmentImpl) segment, validDocIds,
queryableDocIds, latestRecordInfoIterator,
+ oldSegment, validDocIdsForOldSegment);
+ } catch (Exception e) {
+ throw new RuntimeException(
+ String.format("Caught exception while replacing segment metadata
during inconsistencies: %s, table: %s",
+ segmentName, _tableNameWithType), e);
+ }
+ }
+
+ protected abstract void removeNewlyAddedKeys(IndexSegment oldSegment);
+
+ protected abstract void eraseKeyToPreviousLocationMap();
+
+ protected abstract void revertCurrentSegmentUpsertMetadata(IndexSegment
oldSegment,
+ ThreadSafeMutableRoaringBitmap validDocIds,
ThreadSafeMutableRoaringBitmap queryableDocIds);
Review Comment:
Which one? We do use this method to implement in the implementation classes
right? The variables as well
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