loquisgon commented on a change in pull request #10742:
URL: https://github.com/apache/druid/pull/10742#discussion_r564678335
##########
File path:
indexing-service/src/main/java/org/apache/druid/indexing/common/task/AbstractBatchIndexTask.java
##########
@@ -373,23 +373,25 @@ private boolean
tryLockWithDetermineResult(TaskActionClient client, LockGranular
}
}
+
protected boolean tryTimeChunkLock(TaskActionClient client, List<Interval>
intervals) throws IOException
{
-
- // In this case, the intervals to lock must be aligned with
segmentGranularity if it's defined
- final Iterator<Interval> intervalIterator;
+ // The given intervals are first converted to align with segment
granularity. This is because,
+ // when an overwriting task finds a version for a given input row, it
expects the interval
+ // associated to each version to be equal or larger than the time bucket
where the input row falls in.
+ // See ParallelIndexSupervisorTask.findVersion().
+ final Set<Interval> uniqueCondensedIntervals = new HashSet<>();
final Granularity segmentGranularity = getSegmentGranularity();
if (segmentGranularity == null) {
- Set<Interval> uniqueIntervals = new HashSet<>(intervals);
- ArrayList<Interval> condensedIntervals = JodaUtils.condenseIntervals(()
-> uniqueIntervals.iterator());
- intervalIterator = condensedIntervals.iterator();
+ uniqueCondensedIntervals.addAll(JodaUtils.condenseIntervals(intervals));
} else {
IntervalsByGranularity intervalsByGranularity = new
IntervalsByGranularity(intervals, segmentGranularity);
- intervalIterator = intervalsByGranularity.granularityIntervalsIterator();
+ // the following is calling a condense that does not materialize the
intervals:
+
uniqueCondensedIntervals.addAll(JodaUtils.condenseIntervals(intervalsByGranularity.granularityIntervalsIterator()));
Review comment:
I like your suggestion so I followed it and will avoid materializing
them.
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