abhishekagarwal87 commented on code in PR #15141:
URL: https://github.com/apache/druid/pull/15141#discussion_r1364958249
##########
indexing-service/src/main/java/org/apache/druid/indexing/seekablestream/SeekableStreamEndSequenceNumbers.java:
##########
@@ -147,6 +148,40 @@ public SeekableStreamSequenceNumbers<PartitionIdType,
SequenceOffsetType> plus(
}
}
+ @Override
+ public int compareTo(SeekableStreamSequenceNumbers<PartitionIdType,
SequenceOffsetType> other)
+ {
+ if (this.getClass() != other.getClass()) {
+ throw new IAE(
+ "Expected instance of %s, got %s",
+ this.getClass().getName(),
+ other.getClass().getName()
+ );
+ }
+
+ final SeekableStreamEndSequenceNumbers<PartitionIdType,
SequenceOffsetType> otherStart =
+ (SeekableStreamEndSequenceNumbers<PartitionIdType,
SequenceOffsetType>) other;
+
+ if (stream.equals(otherStart.stream)) {
+ //Same stream, compare the offset
+ AtomicReference<Boolean> res = new AtomicReference<>(false);
+ partitionSequenceNumberMap.forEach(
+ (partitionId, sequenceOffset) -> {
+ if (otherStart.partitionSequenceNumberMap.get(partitionId) != null
&& Long.parseLong(String.valueOf(sequenceOffset)) >
Long.parseLong(String.valueOf(otherStart.partitionSequenceNumberMap.get(partitionId))))
{
Review Comment:
It could, yes. The solution here is to either retry no matter how current
and new offsets compare. Or we could add the comparison to Kinesis too -
https://docs.aws.amazon.com/kinesis/latest/APIReference/API_SequenceNumberRange.html
- The sequence numbers seem to be numbers in string form but can contain up to
128 digits. It should be possible to compare them without converting them to a
number.
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