* Supports expression-paramed aggregator (squashed and rebased on master) also includes math post aggregator (was #2820)
* Addressed comments
* addressed comments
* Remove unused numProcessed param from PooledTopNAlgorithm.aggregateDimValue()
* Replace AtomicInteger with simple int in PooledTopNAlgorithm.scanAndAggregate() and aggregateDimValue()
* Remove unused import
Despite the non-thread-safety of HyperLogLogCollector, it is actually currently used
by multiple threads during realtime indexing. HyperUniquesAggregator's "aggregate" and
"get" methods can be called simultaneously by OnheapIncrementalIndex, since its
"doAggregate" and "getMetricObjectValue" methods are not synchronized.
This means that the optimization of HyperLogLogCollector.fold in #3314 (saving and
restoring position rather than duplicating the storage buffer of the right-hand side)
could cause corruption in the face of concurrent writes.
This patch works around the issue by duplicating the storage buffer in "get" before
returning a collector. The returned collector still shares data with the original one,
but the situation is no worse than before #3314. In the future we may want to consider
making a thread safe version of HLLC that avoids these kinds of problems in realtime
indexing. But for now I thought it was best to do a small change that restored the old
behavior.
* Improve performance of StringDimensionMergerV9 and StringDimensionMergerLegacy by avoiding primitive int boxing by using IntIterator in IndexedInts instead of Iterator<Integer>; Extract some common logic for V9 and Legacy mergers; Minor improvements to resource handling in StringDimensionMergerV9
* Don't mask index in MergeIntIterator.makeQueueElement()
* DRY conversion RoaringBitmap's IntIterator to fastutil's IntIterator
* Do implement skip(n) in IntIterators extending AbstractIntIterator because original implementation is not reliable
* Use Test(expected=Exception.class) instead of try { } catch (Exception e) { /* ignore */ }
This is useful for the insert-segment-to-db tool, which would otherwise
potentially insert a lot of overshadowed segments as "used", causing
load and drop churn in the cluster.
* support finding segments from a AWS S3 storage.
* add more Uts
* address comments and add a document for the feature.
* update docs indentation
* update docs indentation
* address comments.
1. add a Ut for json ser/deser for the config object.
2. more informant error message in a Ut.
* address comments.
1. use @Min to validate the configuration object
2. change updateDescriptor to a string as it does not take an argument otherwise
* fix a Ut failure - delete a Ut for testing default max length.
* print exception details from QueryInterruptedException
* in QueryResource.java, set thread name to include dataSource names and not whole query string e.g. from QueryDataSource
* Add support for timezone in segment granularity
* CR feedback. Handle null timezone during equals check.
* Include timezone in docs.
Add timezone for ArbitraryGranularitySpec.
Gian Merlino
Himanshu
Slim
Aveplatter
Navis Ryu
Akash Dwivedi
Charles Allen
Parag Jain
David Lim
Roman Leventov
Nishant
jaehong choi
praveev
John Zhang
Maciej Bryński
Xiaoyao