gianm commented on a change in pull request #12008:
URL: https://github.com/apache/druid/pull/12008#discussion_r761436330
##########
File path:
extensions-core/kafka-indexing-service/src/main/java/org/apache/druid/indexing/kafka/IncrementalPublishingKafkaIndexTaskRunner.java
##########
@@ -126,38 +126,56 @@ private void possiblyResetOffsetsOrWait(
TaskToolbox taskToolbox
) throws InterruptedException, IOException
{
- final Map<TopicPartition, Long> resetPartitions = new HashMap<>();
- boolean doReset = false;
+ final Map<TopicPartition, Long> newOffsetInMetadata = new HashMap<>();
+
if (task.getTuningConfig().isResetOffsetAutomatically()) {
for (Map.Entry<TopicPartition, Long> outOfRangePartition :
outOfRangePartitions.entrySet()) {
final TopicPartition topicPartition = outOfRangePartition.getKey();
- final long nextOffset = outOfRangePartition.getValue();
- // seek to the beginning to get the least available offset
+ final long outOfRangeOffset = outOfRangePartition.getValue();
+
StreamPartition<Integer> streamPartition = StreamPartition.of(
topicPartition.topic(),
topicPartition.partition()
);
- final Long leastAvailableOffset =
recordSupplier.getEarliestSequenceNumber(streamPartition);
- if (leastAvailableOffset == null) {
- throw new ISE(
- "got null sequence number for partition[%s] when fetching from
kafka!",
- topicPartition.partition()
- );
+
+ final Long earliestAvailableOffset =
recordSupplier.getEarliestSequenceNumber(streamPartition);
+ if (earliestAvailableOffset == null) {
+ throw new ISE("got null earliest sequence number for partition[%s]
when fetching from kafka!",
+ topicPartition.partition());
}
- // reset the seek
- recordSupplier.seek(streamPartition, nextOffset);
- // Reset consumer offset if resetOffsetAutomatically is set to true
- // and the current message offset in the kafka partition is more than
the
- // next message offset that we are trying to fetch
- if (leastAvailableOffset > nextOffset) {
- doReset = true;
- resetPartitions.put(topicPartition, nextOffset);
+
+ if (outOfRangeOffset < earliestAvailableOffset) {
Review comment:
For a partition that we've already committed some offset for, the
starting offset given to a task for that partition is going to be the committed
offset plus 1. So if no new messages have been written since the last commit,
the starting offset will not exist yet.
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