* Do not remove segment that should not be moved from currentlyMovingSegments (segments are removed by callbacks or not inserted)
* Replace putIfAbsent with computeIfAbsent in DruidBalancer
* Refactoring
* Stop RemoteTaskRunner's cleanupExec using TaskMaster's lifecycle, not global injected lifecycle
* Prohibit starting Lifecycle twice; Make Lifecycle to reject addMaybeStartHandler() attempts in the process of stopping rather than entering deadlock
* Fix Lifecycle.addMaybeStartHandler()
* Remove RemoteTaskRunnerFactoryTest
* Add docs
* Language
* Address comments
* Fix RemoteTaskRunnerTestUtils
* Don't use limit push down with having spec
* Throw exception when forcing limit push down with having
* Tests for having and limit push down
* Fix pool sizes in unit test
* Add HistoricalCursor.getReadableOffset() to access unwrapped offset in selectors, when the 'main' offset if FilteredOffset (fixes#4628)
* Stack overflow test
* make BrokerQueryResource instantiation singleton
* fix druid.router.http.* handling so that they are actually used and introduce numRequestsQueued for jetty http client at router
* address comments
* address review comment
* Use ConcurrentHashMap to store segment servers or else getInventory() would need to clone the values list
* introduce unstableTimeout for segment servers
* address review comment
* add HttpServerInventoryViewConfigTest
* NPE thrown when empty/null is passes to TimeDimExtractionFn
* Add @Nullable where ever applicable
* Add @Nullable to SearchQuerySpec.apply()
* Remove unused
* Improved SQL support for floats and doubles.
- Use Druid FLOAT for SQL FLOAT, and Druid DOUBLE for SQL DOUBLE, REAL,
and DECIMAL.
- Use float* aggregators when appropriate.
- Add tests involving both float and double columns.
- Adjust documentation accordingly.
* CR comments.
* Fix braces.
* rolling upgrade order change to bring coordinator and overlord together
* mentioned merged Coordinator-Overlord in upgrade order doc
* revert autoscaling doc change
* auto scaling doc fix
* Add metrics to the native queries underpinning SQL.
This is done by factoring out the metrics and request log emitting
code from QueryResource into a new QueryLifecycle class. That class
is used by both QueryResource and the SQL DruidSchema and QueryMaker.
Also fixes a couple of bugs in QueryResource:
- RequestLogLine start time was set to `TimeUnit.NANOSECONDS.toMillis(startNs)`,
which is incorrect since absolute nanos cannot be converted to millis.
- DruidMetrics.makeRequestMetrics was called with null `query` on
unparseable queries, which led to spurious "Unable to log query"
errors.
Partial fix for #4047.
* Code style
* Remove unused imports.
* Fix tests.
* Remove unused import.
This allows the tasks to run concurrently. Additionally, rework
the partition-determining code in a couple ways:
- Use a task-id based sequenceName so concurrently running append
tasks do not clobber each others' segments.
- Make the list of shardSpecs empty when rollup is non-guaranteed, and
let allocators handle the creation of incremental shardSpecs.
* Fixes and improvements to SQL metadata caching.
Also adds support for MultipleSpecificSegmentSpec to CachingClusteredClient.
SQL changes:
- Cache metadata on a per-segment level, in addition to per-dataSource, so
we don't need to re-query all segments whenever a single new one appears.
This should lower the load placed on the cluster by metadata queries.
- Fix race condition in DruidSchema that can cause us to miss metadata. It was
possible to notice new segments, then issue a query, and have that query
not actually hit those segments, and not notice that it didn't hit those segments.
Then, the metadata from those segments would be ignored.
- Fix assumption in DruidSchema that all segments are immutable. Now, mutable
segments are periodically re-queried.
- Fix inappropriate re-use of SchemaPlus. Now we create one for each planning
cycle, rather than sharing one. It caches table objects, which we want to
avoid, since it can cause stale metadata. We do the caching in DruidSchema
so we don't need the SchemaPlus caching.
Server changes:
- Add a TimelineCallback to TimelineServerView, for callers that want to get updates
when the timeline has been modified.
- Change CachingClusteredClient from a QueryRunner to a QuerySegmentWalker. This
allows it to accept queries that are segment-descriptor-based rather than
intervals-based. In particular it will now support MultipleSpecificSegmentSpec.
* Fix DruidSchema, and unused imports.
* Remove unused import.
* Fix SqlBenchmark.
* Rename ResourceManagementStrategy to ProvisioningStrategy, similarly for related classes. Make ProvisioningService non-global, created per RemoteTaskRunner instead. Add OverlordBlinkLeadershipTest.
* Fix RemoteTaskRunnerFactoryTest.testExecNotSharedBetweenRunners()
* Small fix
* Make SimpleProvisioner and PendingProvisioner more similar in details
* Fix executor name
* Style fixes
* Use LifecycleLock in RemoteTaskRunner
* Remove some unnecessary use of boxed types.
* Fix some incorrect format strings.
* Enable IDEA's MalformedFormatString inspection.
* Add a Checkstyle check for finding uses of incorrect logging packages.
* Fix some incorrect usages of the metamx logger.
* Bypass incorrect logger Checkstyle check where using the correct logger is not simple.
* Fix some more places where the wrong number of arguments are provided to format strings.
* Suppress `MalformedFormatString` inspection on legacy logging test.
* Use @SuppressWarnings rather than a noinspection suppression comment.
* Fix some more incorrect format strings.
* Suppress some more incorrect format string warnings where the incorrect string is intentional.
* Log the aggregator when closing it fails.
* Remove some unneeded log lines.
Roman Leventov
QiuMM
dgolitsyn
Charles Allen
Yuewen Wang
Jonathan Wei
tkyaw
David Lim
Jihoon Son
Himanshu
Niketh Sabbineni
Egor Riashin
Akash Dwivedi
Gian Merlino
Yuusaku Taniguchi
Atul Mohan
Slim
Michał Misiewicz
Chris Gavin