Commit Graph

94 Commits

Author SHA1 Message Date
Gian Merlino 4c33d0a00f Add some new expression functions and macros. (#4442)
* Add some new expression functions and macros.

See misc/math-expr.md for the list of added functions, except for
"like", which previously existed but was not documented.

* Add easymock to datasketches tests.

* Add easymock to distinctcount tests.

* Add easymock to virtual-columns tests.

* Code review comments.

* Clean up code a bit.

* Add easymock to scan-query tests.

* Rework ExprMacros that have multiple impls.

* Improve test coverage.
2017-06-28 10:15:58 -07:00
Fokko Driesprong ff501e8f13 Add Date support to the parquet reader (#4423)
* Add Date support to the parquet reader

Add support for the Date logical type. Currently this is not supported. Since the parquet
date is number of days since epoch gets interpreted as seconds since epoch, it will fails
on indexing the data because it will not map to the appriopriate bucket.

* Cleaned up code and tests

Got rid of unused json files in the examples, cleaned up the tests by
using try-with-resources. Now get the filenames from the json file
instead of hard coding them and integrated general improvements from
the feedback provided by leventov.

* Got rid of the caching

Remove the caching of the logical type of the time dimension column
and cleaned up the code a bit.
2017-06-22 15:56:08 -05:00
Goh Wei Xiang f68a0693f3 Allow use of non-threadsafe ObjectCachingColumnSelectorFactory (#4397)
* Adding a flag to indicate when ObjectCachingColumnSelectorFactory need not be threadsafe.

* - Use of computeIfAbsent over putIfAbsent
- Replace Maps.newXXXMap() with normal instantiation
- Documentations on when is thread-safe required.
- Use Builders for On/OffheapIncrementalIndex

* - Optimization on computeIfAbsent
- Constant EMPTY DimensionsSpec
- Improvement on IncrementalIndexSchema.Builder
  - Remove setting of default values
  - Use var args for metrics
- Correction on On/OffheapIncrementalIndex Builders
- Combine On/OffheapIncrementalIndex Builders

* - Removing unused imports.

* - Helper method for testing with IncrementalIndex.Builder

* - Correction on javadoc.

* Style fix
2017-06-16 16:04:19 -05:00
Roman Leventov 976492c186 Make PolyBind to fail if property value is not found (fixes #4369) (#4374)
* Make PolyBind to fail if property value is not found

* Fix test

* Add onHeap option in NamespaceExtractionModule

* Add PolyBind.createChoiceWithDefaultNoScope()

* Fix NPE

* Fix

* Configure MetadataStorageProvider option for MySQL, PostgreSQL and SQLServer

* Deprecate PolyBind.createChoiceWithDefault form with unused defaultKey

* Fix NPE
2017-06-13 09:45:43 -07:00
Roman Leventov c121845102 Avoid using Guava in DataSegmentPushers because of incompatibilities (#4391)
* Avoid using Guava in DataSegmentPushers because of Hadoop incompatibilities

* Clarify comments
2017-06-12 09:58:34 -07:00
Roman Leventov 5285eb961b Update dependencies (#4313)
* Update dependencies

* Downgrade curator

* Rollback aws-java-sdk dependency to 1.10.77

* Revert exclusions in integration-tests

* Depend only on aws-java-sdk-ec2 instead of umbrella aws-java-sdk (fixes #4382)
2017-06-09 14:32:07 -07:00
Niketh Sabbineni 2cd91b64d0 Uncompress streams without having to download to tmp first (#4364)
* Uncompress streams without having to download to tmp first

* Remove unused file
2017-06-08 18:08:38 -07:00
Roman Leventov 63a897c278 Enable most IntelliJ 'Probable bugs' inspections (#4353)
* Enable most IntelliJ 'Probable bugs' inspections

* Fix in RemoteTestNG

* Fix IndexSpec's equals() and hashCode() to include longEncoding

* Fix inspection errors

* Extract global isntance of natural().nullsFirst(); address comments

* Fix

* Use noinspection comments instead of SuppressWarnings on method for IntelliJ-specific inspections

* Prohibit Ordering.natural().nullsFirst() using Checkstyle
2017-06-07 09:54:25 -07:00
Roman Leventov b487fa355b More methods in QueryMetrics and TopNQueryMetrics (the last part of #3798) (#4284)
* Add more methods to QueryMetrics and TopNQueryMetrics, add BitmapResultFactory

* Add implementor expectations section to BitmapResultFactory javadoc
2017-06-07 09:49:08 -07:00
Roman Leventov 31d33b333e Make using implicit system Charset an error (#4326)
* Make using implicit system charset an error

* Use StringUtils.toUtf8() and fromUtf8() instead of String.getBytes() and new String()

* Use English locale in StringUtils.safeFormat()

* Restore comment
2017-06-05 23:57:25 -07:00
Slim a2584d214a Delagate creation of segmentPath/LoadSpec to DataSegmentPushers and add S3a support (#4116)
* Adding s3a schema and s3a implem to hdfs storage module.

* use 2.7.3

* use segment pusher to make loadspec

* move getStorageDir and makeLoad spec under DataSegmentPusher

* fix uts

* fix comment part1

* move to hadoop 2.8

* inject deep storage properties

* set version to 2.7.3

* fix build issue about static class

* fix comments

* fix default hadoop default coordinate

* fix create filesytem

* downgrade aws sdk

* bump the version
2017-06-04 00:55:09 -06:00
Roman Leventov 9625993c9a Fix bugs in Google extensions and RocketMQ extension (#4340) 2017-05-30 14:25:35 -07:00
Jihoon Son 733dfc9b30 Add PrefetchableTextFilesFirehoseFactory for cloud storage types (#4193)
* Add PrefetcheableTextFilesFirehoseFactory

* fix comment

* exception handling

* Fix wrong json property

* Remove ReplayableFirehoseFactory and fix misspelling

* Defer object initialization

* Add a temporaryDirectory parameter to FirehoseFactory.connect()

* fix when cache and fetch are disabled

* Address comments

* Add more test

* Increase timeout for test

* Add wrapObjectStream

* Move methods to Firehose from PrefetchableFirehoseFactory

* Cleanup comment

* add directory listing to s3 firehose

* Rename a variable

* Addressing comments

* Update document

* Support disabling prefetch

* Fix race condition

* Add fetchLock

* Remove ReplayableFirehoseFactoryTest

* Fix compilation error

* Fix test failure

* Address comments

* Add default implementation for new method
2017-05-18 15:37:18 +09:00
Roman Leventov d400f23791 Monomorphic processing of TopN queries with simple double aggregators over historical segments (part of #3798) (#4079)
* Monomorphic processing of topN queries with simple double aggregators and historical segments

* Add CalledFromHotLoop annocations to specialized methods in SimpleDoubleBufferAggregator

* Fix a bug in Historical1SimpleDoubleAggPooledTopNScannerPrototype

* Fix a bug in SpecializationService

* In SpecializationService, emit maxSpecializations warning only once

* Make GenericIndexed.theBuffer final

* Address comments

* Newline

* Reapply 439c906 (Make GenericIndexed.theBuffer final)

* Remove extra PooledTopNAlgorithm.capabilities field

* Improve CachingIndexed.inspectRuntimeShape()

* Fix CompressedVSizeIntsIndexedSupplier.inspectRuntimeShape()

* Don't override inspectRuntimeShape() in subclasses of CompressedVSizeIndexedInts

* Annotate methods in specializations of DimensionSelector and FloatColumnSelector with @CalledFromHotLoop

* Make ValueMatcher to implement HotLoopCallee

* Doc fix

* Fix inspectRuntimeShape() impl in ExpressionSelectors

* INFO logging of specialization events

* Remove modificator

* Fix OrFilter

* Fix AndFilter

* Refactor PooledTopNAlgorithm.scanAndAggregate()

* Small refactoring

* Add 'nothing to inspect' messages in empty HotLoopCallee.inspectRuntimeShape() implementations

* Don't care about runtime shape in tests

* Fix accessor bugs in Historical1SimpleDoubleAggPooledTopNScannerPrototype and HistoricalSingleValueDimSelector1SimpleDoubleAggPooledTopNScannerPrototype, cover them with tests

* Doc wording

* Address comments

* Remove MagicAccessorBridge and ensure Offset subclasses are public

* Attach error message to element
2017-05-16 16:19:55 -07:00
Roman Leventov b7a52286e8 Make @Override annotation obligatory (#4274)
* Make MissingOverride an error

* Make travis stript to fail fast

* Add missing Override annotations

* Comment
2017-05-16 13:30:30 -05:00
Benedict Jin e823085866 Improve `collection` related things that reusing a immutable object instead of creating a new object (#4135) 2017-05-17 01:38:51 +09:00
Jihoon Son 50a4ec2b0b Add support for headers and skipping thereof for CSV and TSV (#4254)
* initial commit

* small fixes

* fix bug

* fix bug

* address code review

* more cr

* more cr

* more cr

* fix

* Skip head rows for CSV and TSV

* Move checking skipHeadRows to FileIteratingFirehose

* Remove checking null iterators

* Remove unused imports

* Address comments

* Fix compilation error

* Address comments

* Add more tests

* Add a comment to ReplayableFirehose

* Addressing comments

* Add docs and fix typos
2017-05-15 22:57:31 -07:00
Roman Leventov 1ebfa22955 Update Error prone configuration; Fix bugs (#4252)
* Make Errorprone the default compiler

* Address comments

* Make Error Prone's ClassCanBeStatic rule a error

* Preconditions allow only %s pattern

* Fix DruidCoordinatorBalancerTester

* Try to give the compiler more memory

* Remove distribution module activation on jdk 1.8 because only jdk 1.8 is used now

* Don't show compiler warnings

* Try different travis script

* Fix travis.yml

* Make Error Prone optional again

* For error-prone compiler

* Increase compiler's maxmem

* Don't run Error Prone for benchmarks because of OOM

* Skip install step in Travis

* Remove MetricHolder.writeToChannel()

* In travis.yml, check compilation before tests, because it may fail faster
2017-05-12 15:55:17 +09:00
Roman Leventov e09e892477 Refactor QueryRunner to accept QueryPlus: Query + QueryMetrics (part of #3798) (#4184)
* Add QueryPlus. Add QueryRunner.run(QueryPlus, Map) method with default implementation, to replace QueryRunner.run(Query, Map).

* Fix GroupByMergingQueryRunnerV2

* Fix QueryResourceTest

* Expand the comment to Query.run(walker, context)

* Remove legacy version of BySegmentSkippingQueryRunner.doRun()

* Add LegacyApiQueryRunnerTest and be more specific about legacy API removal plans in Druid 0.11 in Javadocs
2017-05-10 12:25:00 -07:00
Fokko Driesprong 13143f9376 Update to Parquet 1.8.2 (#4210)
Hi guys,

Since Spark 2.x uses Parquet 1.8.2, we would like to update Druid's parquet library from 1.8.1 to 1.8.2 as well. It includes a lot of patches, performance improvements and better compatibility:
4aba4da...c652278

Cheers, Fokko
2017-04-27 15:34:30 +09:00
Roman Leventov ee9b5a619a Fix bugs in query builders and in TimeBoundaryQuery.getFilter() (#4131)
* Add queryMetrics property to Query interface; Fix bugs and removed unused code in Druids

* Fix a bug in TimeBoundaryQuery.getFilter() and remove TimeBoundaryQuery.getDimensionsFilter()

* Don't reassign query's queryMetrics if already present in CPUTimeMetricQueryRunner and MetricsEmittingQueryRunner

* Add compatibility constructor to BaseQuery

* Remove Query.queryMetrics property

* Move nullToNoopLimitSpec() method to LimitSpec interface

* Rename GroupByQuery.applyLimit() to postProcess(); Fix inconsistencies in GroupByQuery.Builder
2017-04-25 16:32:02 -05:00
Gian Merlino 2ca7b00346 Update versions to 0.10.1-SNAPSHOT. (#4191) 2017-04-20 18:12:28 -07:00
Jihoon Son 5b69f2eff2 Make timeout behavior consistent to document (#4134)
* Make timeout behavior consistent to document

* Refactoring BlockingPool and add more methods to QueryContexts

* remove unused imports

* Addressed comments

* Address comments

* remove unused method

* Make default query timeout configurable

* Fix test failure

* Change timeout from period to millis
2017-04-19 09:47:53 +09:00
kaijianding db656c5a88 fix kafka8 unparsable message halt job issue (#4164) 2017-04-18 11:23:02 -07:00
Dongkyu Hwangbo 0d2e91ed50 Adding Kafka-emitter (#3860)
* Initial commit

* Apply another config: clustername

* Rename variable

* Fix bug

* Add retry logic

* Edit retry logic

* Upgrade kafka-clients version to the most recent release

* Make callback single object

* Write documentation

* Rewrite error message and emit logic

* Handling AlertEvent

* Override toString()

* make clusterName more optional

* bump up druid version

* add producer.config option which make user can apply another optional config value of kafka producer

* remove potential blocking in emit()

* using MemoryBoundLinkedBlockingQueue

* Fixing coding convention

* Remove logging every exception and just increment counting

* refactoring

* trivial modification

* logging when callback has exception

* Replace kafka-clients 0.10.1.1 with 0.10.2.0

* Resolve the problem related of classloader

* adopt try statement

* code reformatting

* make variables final

* rewrite toString
2017-04-04 14:07:43 -07:00
Jason Banich 117c698c59 Update StatsDEmitter.java (#4111)
This was mentioned in the original pull (https://github.com/druid-io/druid/pull/2410) by @sascha-coenen, and the original author (@michaelschiff) agreed that it seemed reasonable

This commit fixes issue https://github.com/druid-io/druid/issues/3960
2017-03-27 10:32:21 -07:00
Roman Leventov 4b5ae31207 QueryMetrics: abstraction layer of query metrics emitting (part of #3798) (#3954)
* QueryMetrics: abstraction layer of query metrics emitting

* Minor fixes

* QueryMetrics.emit() for bulk emit and improve Javadoc

* Fixes

* Fix

* Javadoc fixes

* Typo

* Use DefaultObjectMapper

* Add tests

* Address PR comments

* Remove QueryMetrics.userDimensions(); Rename QueryMetric.register() to report()

* Dedicated TopNQueryMetricsFactory, GroupByQueryMetricsFactory and TimeseriesQueryMetricsFactory

* Typo

* More elaborate Javadoc of QueryMetrics

* Formatting

* Replace QueryMetric enum with lambdas

* Add comments and VisibleForTesting annotations
2017-03-23 17:23:59 -07:00
Karol Woźniak 8510a52e02 scan-query: Use long as limit. (#4081)
* scan-query: Use long instead of int as limit type

* Use MAX_INSTANT queryTimeout, if timeout == 0
2017-03-20 14:19:35 -07:00
Roman Leventov 84fe91ba0b Monomorphic processing of TopN queries with 1 and 2 aggregators (key part of #3798) (#3889)
* Monomorphic processing: add HotLoopCallee, CalledFromHotLoop, RuntimeShapeInspector, SpecializationService. Specialize topN queries with 1 or 2 aggregators. Add Cursor.advanceUninterruptibly() and isDoneOrInterrupted() for exception-free query processing.

* Use Execs.singleThreaded()

* RuntimeShapeInspector to support nullable fields

* Make CalledFromHotLoop annotation Inherited

* Remove unnecessary conversion of array of ColumnSelectorPluses to list and back to array in CardinalityAggregatorFactory

* Close InputStream in SpecializationService

* Formatting

* Test specialized PooledTopNScanners

* Set flags in PooledTopNAlgorithm directly

* Fix tests, dependent on CountAggragatorFactory toString() form

* Fix

* Revert CountAggregatorFactory changes

* Implement inspectRuntimeShape() for LongWrappingDimensionSelector and FloatWrappingDimensionSelector

* Remove duplicate RoaringBitmap dependency in the extendedset pom.xml

* Fix

* Treat ByteBuffers specially in StringRuntimeShape

* Doc fix

* Annotate BufferAggregator.init() with CalledFromHotLoop

* Make triggerSpecializationIterationsThreshold an int

* Remove SpecializationService.PerPrototypeClassState.of()

* Add comments

* Limit the amount of specializations that SpecializationService could make

* Add default implementation for BufferAggregator.inspectRuntimeShape(), for compatibility with extensions

* Use more efficient ConcurrentMap's idioms in SpecializationService
2017-03-17 14:44:36 -05:00
Roman Leventov 81a5f9851f TmpFileIOPeons to create files under the merging output directory, instead of java.io.tmpdir (#3990)
* In IndexMerger and IndexMergerV9, create temporary files under the output directory/tmpPeonFiles, instead of java.io.tmpdir

* Use FileUtils.forceMkdir() across the codebase and remove some unused code

* Fix test

* Fix PullDependencies.run()

* Unused import
2017-03-02 14:05:12 -08:00
Jonathan Wei 5fb1638534 Add default configuration for select query 'fromNext' parameter (#3986)
* Add default configuration for select query 'fromNext' parameter

* PR comments

* Fix PagingSpec config injection

* Injection fix for test
2017-03-01 17:05:35 -08:00
Gian Merlino cc20133e70 Checkstyle rule to outlaw tabs. (#3988)
Tabs are the worst.
2017-02-28 23:52:53 -08:00
Jonathan Wei a08660a9ca Support ingestion of long/float dimensions (#3966)
* Support ingestion for long/float dimensions

* Allow non-arrays for key components in indexing type strategy interfaces

* Add numeric index merge test, fixes

* Docs for numeric dims at ingestion

* Remove unused import

* Adjust docs, add aggregate on numeric dims tests

* remove unused imports

* Throw exception for bitmap method on numerics

* Move typed selector creation to DimensionIndexer interface

* unused imports

* Fix

* Remove unused DimensionSpec from indexer methods, check for dims first in inc index storage adapter

* Remove spaces
2017-02-28 19:04:41 -08:00
praveev 5ccfdcc48b Fix testDeadlock timeout delay (#3979)
* No more singleton. Reduce iterations

* Granularities

* Fix the delay in the test

* Add license header

* Remove unused imports

* Lot more unused imports from all the rearranging

* CR feedback

* Move javadoc to constructor
2017-02-28 12:51:41 -06:00
praveev c3bf40108d One granularity (#3850)
* Refactor Segment Granularity

* Beginning of one granularity

* Copy the fix for custom periods in segment-grunalrity over here.

* Remove the custom serialization for now.

* Compilation cleanup

* Reformat code

* Fixing unit tests

* Unify to use a single iterable

* Backward compatibility for rolling upgrade

* Minor check style. Cosmetic changes.

* Rename length and millis to duration

* CR feedback

* Minor changes.
2017-02-25 01:02:29 -06:00
michaelschiff e5fb0e1ff5 New property for each metric that tells the StatsDEmitter to convert metric values from range 0-1 to 0-100. This (#3936)
prevents rates and percentages expressed as Doubles (0.xx) from being rounded down to 0.
2017-02-16 13:55:56 -08:00
Akash Dwivedi 8854ce018e File.deleteOnExit() (#3923)
* Less use of File.deleteOnExit()
 * removed deleteOnExit from most of the tests/benchmarks/iopeon
 * Made IOpeon closable

* Formatting.

* Revert DeterminePartitionsJobTest, remove cleanup method from IOPeon
2017-02-13 15:12:14 -08:00
michaelschiff c1eee9bbf3 modified "end" column to `end` (#3903)
* modified "end" column to `end`.  "end" is interpretted as a string rather than dereferencing the column value

* SQLMetadataConnector.getQuoteString defines the string that should be used to quote string fields

* positional arguments for String.format

* for Connectors that use " need to include the \ escape as well
2017-02-13 12:36:27 -08:00
Jonathan Wei ca2b04f0fd Add long/float ColumnSelectorStrategy implementations (#3838)
* Add long/float ColumnSelectorStrategy implementations

* Address PR comments

* Add String strategy with internal dictionary to V2 groupby, remove dict from numeric wrapping selectors, more tests

* PR comments

* Use BaseSingleValueDimensionSelector for long/float wrapping

* remove unused import

* Address PR comments

* PR comments

* PR comments

* More PR comments

* Fix failing calcite histogram subquery tests

* ScanQuery test and comment about isInputRaw

* Add outputType to extractionDimensionSpec, tweak SQL tests

* Fix limit spec optimization for numerics

* Add cardinality sanity checks to TopN

* Fix import from merge

* Add tests for filtered dimension spec outputType

* Address PR comments

* Allow filtered dimspecs on numerics

* More comments
2017-02-08 20:39:29 -08:00
Gian Merlino 12317fd001 Bump version to 0.10.0-SNAPSHOT. (#3913) 2017-02-06 17:54:35 -08:00
Jonathan Wei e6b95e80aa Remove deprecated Aggregator/AggregatorFactory methods (#3894) 2017-02-01 14:43:18 -08:00
Gian Merlino d3a3b7ba0c Add virtual column types, holder serde, and safety features. (#3823)
* Add virtual column types, holder serde, and safety features.

Virtual columns:
- add long, float, dimension selectors
- put cache IDs in VirtualColumnCacheHelper
- adjust serde so VirtualColumns can be the holder object for Jackson
- add fail-fast validation for cycle detection and duplicates
- add expression virtual column in core

Storage adapters:
- move virtual column hooks before checking base columns, to prevent surprises
  when a new base column is added that happens to have the same name as a
  virtual column.

* Fix ExtractionDimensionSpecs with virtual dimensions.

* Fix unused imports.

* CR comments

* Merge one more time, with feeling.
2017-01-26 18:15:51 -08:00
Roman Leventov 75d9e5e7a7 DimensionSelector-related bug fixes and optimizations (fixes #3799, part of #3798) (#3858)
*  * Add DimensionSelector.idLookup() and nameLookupPossibleInAdvance() to allow better inspection of features DimensionSelectors supports, and safer code working with DimensionSelectors in BaseTopNAlgorithm, BaseFilteredDimensionSpec, DimensionSelectorUtils;
 * Add PredicateFilteringDimensionSelector, to make BaseFilteredDimensionSpec to be able to decorate DimensionSelectors with unknown cardinality;
 * Add DimensionSelector.makeValueMatcher() (two kinds) for DimensionSelector-side specifics-aware optimization of ValueMatchers;
 * Optimize getRow() in BaseFilteredDimensionSpec's DimensionSelector, StringDimensionIndexer's DimensionSelector and SingleScanTimeDimSelector;
 * Use two static singletons, TrueValueMatcher and FalseValueMatcher, instead of BooleanValueMatcher;
 * Add NullStringObjectColumnSelector singleton and use it in MapVirtualColumn

* Rename DimensionSelectorUtils.makeNonDictionaryEncodedIndexedIntsBasedValueMatcher to makeNonDictionaryEncodedRowBasedValueMatcher

* Make ArrayBasedIndexedInts constructor private, replace it's usages with of() static factory method

* Cache baseIdLookup in ForwardingFilteredDimensionSelector

* Fix a bug in DimensionSelectorUtils.makeRowBasedValueMatcher(selector, predicate, matchNull)

* Employ precomputed BitSet optimization in DimensionSelector.makeValueMatcher(value, matchNull) when lookupId() is not available, but cardinality is known and lookupName() is available

* Doc fixes

* Addressed comments

* Fix

* Fix

* Adjust javadoc of DimensionSelector.nameLookupPossibleInAdvance() for SingleScanTimeDimSelector

* throw UnsupportedOperationException instead of IAE in BaseTopNAlgorithm
2017-01-25 15:28:27 -08:00
Himanshu efb1b40fe0 build sqlserver-metadata-storage contrib extension (#3871) 2017-01-20 14:39:15 -08:00
kaijianding 33ae9dd485 streaming version of select query (#3307)
* streaming version of select query

* use columns instead of dimensions and metrics;prepare for valueVector;remove granularity

* respect query limit within historical

* use constant

* fix thread name corrupted bug when using jetty qtp thread rather than processing thread while working with SpecificSegmentQueryRunner

* add some test for scan query

* add scan query document

* fix merge conflicts

* add compactedList resultFormat, this format is better for json ser/der

* respect query timeout

* respect query limit on broker

* use static consts and remove unused code
2017-01-19 16:09:53 -06:00
Jihoon Son d80bec83cc Enable auto license checking (#3836)
* Enable license checking

* Clean duplicated license headers
2017-01-10 18:13:47 -08:00
Roman Leventov 33800122ad Don't return leaked Objects back to StupidPool, because this is dangerous. Reuse Cleaners in StupidPool. Make StupidPools named. Add StupidPool.leakedObjectCount(). Minor fixes (#3631) 2016-12-26 00:35:35 -06:00
Himanshu 4ca3b7f1e4 overlord helpers framework and tasklog auto cleanup (#3677)
* overlord helpers framework and tasklog auto cleanup

* review comment changes

* further review comments addressed
2016-12-21 15:18:55 -08:00
Gian Merlino 6440ddcbca Fix #3795 (Java 7 compatibility). (#3796)
* Fix #3795 (Java 7 compatibility).

Also introduce Animal Sniffer checks during build, which would
have caught the original problems.

* Add Animal Sniffer on caffeine-cache for JDK8.
2016-12-21 10:19:13 -08:00
Nishant f576a0ff14 Contrib Extension for Ambari Metrics Emitter (#3767)
* Contrib Extension for Ambari Metrics Emitter

extension to enable druid to send metrics to ambari metrics server
(https://cwiki.apache.org/confluence/display/AMBARI/Metrics)

review comments

switch to public repo

* review comments

* add docs

* fix pom version

* Add link for doc page in extensions.md

* remove unused imports

* review comments

review comments

remove unused dependency

review comment
2016-12-19 11:12:47 -08:00