* Move emitters from io.druid.server.initialization to the dedicated io.druid.server.emitter package; Update emitter library to 0.6.0; Add support for ParametrizedUriEmitter; Support hierarical properties in JsonConfigurator (was needed for ParametrizedUriEmitter)
* Log created RequestLoggers
* Fix forbidden API
* Test fix
* More Http and Parametrized Http Emitter docs
* Switch to debug level
* fixes HttpServerInventoryView to call server/segment callbacks correctly and Unit Tests for the class
* fix checkstyle and forbidden-api errors
* HttpServerInventoryView to finish start() only after server inventory is initialized
* fix compilation errors
* address review comments
* add exponential backoff instead of fixed 5 secs on successive failures
* update test to exercise server fail scenarios
* use AtomicInteger for requestNum and increment only once
* Move scan-query from a contrib extension into core.
Based on a proposal at: https://groups.google.com/d/topic/druid-development/ME_OatUDnbk/discussion
This patch also adds support for virtual columns to the Scan query,
and updates Druid SQL to use Scan instead of Select.
This patch also makes some behavioral changes to handling of the __time
column. In particular, it is now is returned as "__time" rather than
"timestamp"; it is no longer included if you do not specifically ask for
it in your "columns"; and it is returned as a long rather than a string.
Users can revert time handling to the legacy extension behavior by
setting "legacy" : true in their queries, or setting the property
druid.query.scan.legacy = true. This is meant to provide a migration
path for users that were formerly using the contrib extension.
* Adjustments from review.
* Add back Select query.
* Adjust SQL docs.
* Restore SelectQuery link.
* add jq expression in the flattenSpec
* more tests
* add benchmark
* fix style
* use JsonNode for both JSONPath and JQ
* clean up
* more clean up
* add documentation
* fix style
* move jackson-jq version to dependencyManagement section. remove commented code
* oops. revert wrong fix
* throw IllegalArgumentException for JQ syntax error
* remove e.printStackTrace() that is forbidden
* touch
* SQL: Full TRIM support.
- Support trimming arbitrary characters
- Support BOTH, LEADING, and TRAILING
* Remove unused import.
* Fix tests, add RTRIM / LTRIM.
* Remove unused imports.
* BTRIM and docs.
* Replace for with foreach.
* BufferHashGrouperTest: Better behavior with regard to large buffers.
1) Free buffers after each test
2) Avoid mmaping past the end of a file
* Use CloserRule.
* Use internal-discovery and http for talking to overlord/coordinator leaders
* CuratorDruidNodeDiscovery.getAllNodes() best effort 30 sec wait for cache initialization
* DruidLeaderClientProvider to eagerly instantiate DruidNodeDiscovery when needed so that DruidNodeDiscovery impl cache gets initialized well in time
* Revert "DruidLeaderClientProvider to eagerly instantiate DruidNodeDiscovery when needed so that DruidNodeDiscovery impl cache gets initialized well in time"
This reverts commit f1a2432614ba56ddc2d55fe47e990d17fcfd6129.
* add lifecycle to DruidLeaderClient to early initialize DruidNodeDiscovery so that it has its cache update well in time
When historical caching is enabled, and a select or topN query is
issued, and then a following query with "descending": true is set, the
cached query returns the ascending result (or vice versa), often
resulting in invalid paging identifiers.
The CacheKey for these queries doesn't include the "descending" flag;
this change adds it, and fixes the problem.
* Use trusty for travis jobs.
The distro was set to "precise" in #4572 due to memory issues on trusty,
but we've been seeing performance issues on "precise" recently so let's
see how trusty is working these days.
* Less quiet.
* Adjust memory settings.
* Add back -q option.
* Tweak memory again.
* Adjustments.
* Try squeezing memory a bit more.
* Collapse worker select strategies, change default, add strong affinity.
- Change default worker select strategy to equalDistribution. It is
more generally useful than fillCapacity.
- Collapse the *WithAffinity strategies into the regular ones. The
*WithAffinity strategies are retained for backwards compatibility.
- Change WorkerSelectStrategy to return nullable instead of Optional.
- Fix a couple of errors in the docs.
* Fix test.
* Review adjustments.
* Remove unused imports.
* Switch to DateTimes.nowUtc.
* Simplify code.
* Fix tests (worker assignment started off on a different foot)
Expose version property for so that it may serialize/deserialize correctly
Expose version property for `CustomVersioningPolicy` so that it may serialize/deserialize correctly
Expose version property for CustomVersioningPolicy so that it may serialize/deserialize correctly
Expose version property for `CustomVersioningPolicy` so that it may serialize/deserialize correctly
* DruidLeaderSelector interface for leader election and Curator based impl. DruidCoordinator/TaskMaster are updated to use the new interface.
* add fake DruidNode binding in integration-tests module
* add docs on DruidLeaderSelector interface
* remove start/stop and keep register/unregister Listener in DruidLeaderSelector interface
* updated comments on DruidLeaderSelector
* cache the listener executor in CuratorDruidLeaderSelector
* use same latch owner name that was used before
* remove stuff related to druid.zk.paths.indexer.leaderLatchPath config
* randomize the delay when giving up leadership and restarting leader latch
* SQL: EXPLAIN improvements.
- Include query JSON in explain output.
- Fix a bug where semi-joins and nested groupBys were not fully explained.
- Fix a bug where limits were not included in "select" query explanations.
* Fix compile error.
* Fix compile error.
* Fix tests.
Roman Leventov
Charles Allen
Himanshu
Jonathan Wei
Gian Merlino
Yuya Fujiwara
Jihoon Son
Akash Dwivedi
Niketh Sabbineni
Dayue Gao
Kenji Noguchi
Parag Jain
Egor Riashin
Andy Sloane
dgolitsyn
Kevin Conaway