Commit Graph

3316 Commits

Author SHA1 Message Date
Gian Merlino 78745fea84 Fix two issues with Coordinator -> Overlord communication. (#7412)
* Fix two issues with Coordinator -> Overlord communication.

1) ClientCompactQuery needs to recognize the potential for 'intervals'
to be set instead of 'segments'. The lack of this led to a
NullPointerException on DruidCoordinatorSegmentCompactor.java:102.

2) In two locations (DruidCoordinatorSegmentCompactor,
DruidCoordinatorCleanupPendingSegments) tasks were being retrieved
using waiting/pending/running tasks in the wrong order: by checking
'running' first and then 'pending', tasks could be missed if they
moved from 'pending' to 'running' in between the two calls. Replaced
these methods with calls to 'getActiveTasks', a new method that does
the calls in the right order.

* Remove unused import.
2019-04-04 10:25:18 -07:00
David Glasser 4e23c11345 Make IngestSegmentFirehoseFactory splittable for parallel ingestion (#7048)
* Make IngestSegmentFirehoseFactory splittable for parallel ingestion

* Code review feedback

- Get rid of WindowedSegment
- Don't document 'segments' parameter or support splitting firehoses that use it
- Require 'intervals' in WindowedSegmentId (since it won't be written by hand)

* Add missing @JsonProperty

* Integration test passes

* Add unit test

* Remove two FIXME comments from CompactionTask

I'd like to leave this PR in a potentially mergeable state, but I still would
appreciate reviewer eyes on the questions I'm removing here.

* Updates from code review
2019-04-02 14:59:17 -07:00
Michael Trelinski 347779b17a Zookeeper loss (#6740)
* Update init

Fix bin/init to source from proper directory.

* Fix for Proposal #6518: Shutdown druid processes upon complete loss of ZK connectivity

* Zookeeper Loss:

- Add feature documentation
- Cosmetic refactors
- Variable extractions
- Remove getter

* - Change config key name and reword documentation
- Switch from Function<Void,Void> to Runnable/Lambda
- try { … } finally { … }

* Fix line length too long

* - change to formatted string for logging
- use System.err.println after lifecycle stops

* commenting on makeEnsembleProvider()-created Zookeeper termination

* Add javadoc

* added java doc reference back to apache discussion thread.

* move comment to other class

* favor two-slash comments instead of multiline comments
2019-03-29 15:10:42 -07:00
Jihoon Son 62c3e89266 maxTotalRows should be checked in DataSourceCompactionConfig before setting targetCompactionSizeBytes (#7368)
* maxTotalRows should be checked in DataSourceCompactionConfig before setting targetCompactionSizeBytes

* remove unnecessary default values

* remove flacky test

* fix build

* Add comments
2019-03-28 20:25:10 -07:00
Justin Borromeo ad7862c58a Time Ordering On Scans (#7133)
* Moved Scan Builder to Druids class and started on Scan Benchmark setup

* Need to form queries

* It runs.

* Stuff for time-ordered scan query

* Move ScanResultValue timestamp comparator to a separate class for testing

* Licensing stuff

* Change benchmark

* Remove todos

* Added TimestampComparator tests

* Change number of benchmark iterations

* Added time ordering to the scan benchmark

* Changed benchmark params

* More param changes

* Benchmark param change

* Made Jon's changes and removed TODOs

* Broke some long lines into two lines

* nit

* Decrease segment size for less memory usage

* Wrote tests for heapsort scan result values and fixed bug where iterator
wasn't returning elements in correct order

* Wrote more tests for scan result value sort

* Committing a param change to kick teamcity

* Fixed codestyle and forbidden API errors

* .

* Improved conciseness

* nit

* Created an error message for when someone tries to time order a result
set > threshold limit

* Set to spaces over tabs

* Fixing tests WIP

* Fixed failing calcite tests

* Kicking travis with change to benchmark param

* added all query types to scan benchmark

* Fixed benchmark queries

* Renamed sort function

* Added javadoc on ScanResultValueTimestampComparator

* Unused import

* Added more javadoc

* improved doc

* Removed unused import to satisfy PMD check

* Small changes

* Changes based on Gian's comments

* Fixed failing test due to null resultFormat

* Added config and get # of segments

* Set up time ordering strategy decision tree

* Refactor and pQueue works

* Cleanup

* Ordering is correct on n-way merge -> still need to batch events into
ScanResultValues

* WIP

* Sequence stuff is so dirty :(

* Fixed bug introduced by replacing deque with list

* Wrote docs

* Multi-historical setup works

* WIP

* Change so batching only occurs on broker for time-ordered scans

Restricted batching to broker for time-ordered queries and adjusted
tests

Formatting

Cleanup

* Fixed mistakes in merge

* Fixed failing tests

* Reset config

* Wrote tests and added Javadoc

* Nit-change on javadoc

* Checkstyle fix

* Improved test and appeased TeamCity

* Sorry, checkstyle

* Applied Jon's recommended changes

* Checkstyle fix

* Optimization

* Fixed tests

* Updated error message

* Added error message for UOE

* Renaming

* Finish rename

* Smarter limiting for pQueue method

* Optimized n-way merge strategy

* Rename segment limit -> segment partitions limit

* Added a bit of docs

* More comments

* Fix checkstyle and test

* Nit comment

* Fixed failing tests -> allow usage of all types of segment spec

* Fixed failing tests -> allow usage of all types of segment spec

* Revert "Fixed failing tests -> allow usage of all types of segment spec"

This reverts commit ec470288c7.

* Revert "Merge branch '6088-Time-Ordering-On-Scans-N-Way-Merge' of github.com:justinborromeo/incubator-druid into 6088-Time-Ordering-On-Scans-N-Way-Merge"

This reverts commit 57033f36df, reversing
changes made to 8f01d8dd16.

* Check type of segment spec before using for time ordering

* Fix bug in numRowsScanned

* Fix bug messing up count of rows

* Fix docs and flipped boolean in ScanQueryLimitRowIterator

* Refactor n-way merge

* Added test for n-way merge

* Refixed regression

* Checkstyle and doc update

* Modified sequence limit to accept longs and added test for long limits

* doc fix

* Implemented Clint's recommendations
2019-03-28 14:37:09 -07:00
Charles Allen eeb3dbe79d Move GCP to a core extension (#6953)
* Move GCP to a core extension

* Don't provide druid-core >.<

* Keep AWS and GCP modules separate

* Move AWSModule to its own module

* Add aws ec2 extension and more modules in more places

* Fix bad imports

* Fix test jackson module

* Include AWS and GCP core in server

* Add simple empty method comment

* Update version to 15

* One more 0.13.0-->0.15.0 change

* Fix multi-binding problem

* Grep for s3-extensions and update docs

* Update extensions.md
2019-03-27 09:00:43 -07:00
Jihoon Son 543324f8a9 Fix logging in IndexerSQLMetadataStorageCoordinator (#7349) 2019-03-26 20:36:19 -07:00
Jihoon Son 4d37edac1e Suppress stack trace in warning (#7348) 2019-03-26 17:27:29 -07:00
Jihoon Son 5294277cb4
Fix exclusive start partitions for sequenceMetadata (#7339)
* Fix exclusvie start partitions for sequenceMetadata

* add empty check
2019-03-26 14:39:07 -07:00
Roman Leventov bca40dcdaf
Fix some IntelliJ inspections (#7273)
Prepare TeamCity for IntelliJ 2018.3.1 upgrade. Mostly removed redundant exceptions declarations in `throws` clauses.
2019-03-25 21:11:01 -03:00
Jihoon Son f410c28af6
Always convert start metadata to start (#7332) 2019-03-22 21:12:15 -07:00
Jihoon Son 0c5dcf5586 Fix exclusivity for start offset in kinesis indexing service & check exclusivity properly in IndexerSQLMetadataStorageCoordinator (#7291)
* Fix exclusivity for start offset in kinesis indexing service

* some adjustment

* Fix SeekableStreamDataSourceMetadata

* Add missing javadocs

* Add missing comments and unit test

* fix SeekableStreamStartSequenceNumbers.plus and add comments

* remove extra exclusivePartitions in KafkaIOConfig and fix downgrade issue

* Add javadocs

* fix compilation

* fix test

* remove unused variable
2019-03-21 13:12:22 -07:00
Roman Leventov dfd27e00c0
Avoid many unnecessary materializations of collections of 'all segments in cluster' cardinality (#7185)
* Avoid many  unnecessary materializations of collections of 'all segments in cluster' cardinality

* Fix DruidCoordinatorTest; Renamed DruidCoordinator.getReplicationStatus() to computeUnderReplicationCountsPerDataSourcePerTier()

* More Javadocs, typos, refactor DruidCoordinatorRuntimeParams.createAvailableSegmentsSet()

* Style

* typo

* Disable StaticPseudoFunctionalStyleMethod inspection because of too much false positives

* Fixes
2019-03-19 18:22:56 -03:00
Jihoon Son e18d5d96d9 Ignore bad JSON entries in SQLMetadataSupervisorManager.getAll() (#7278) 2019-03-18 14:28:11 +08:00
Jihoon Son 892d1d35d6
Deprecate NoneShardSpec and drop support for automatic segment merge (#6883)
* Deprecate noneShardSpec

* clean up noneShardSpec constructor

* revert unnecessary change

* Deprecate mergeTask

* add more doc

* remove convert from indexMerger

* Remove mergeTask

* remove HadoopDruidConverterConfig

* fix build

* fix build

* fix teamcity

* fix teamcity

* fix ServerModule

* fix compilation

* fix compilation
2019-03-15 23:29:25 -07:00
Atul Mohan 2daeb50008 Add support for optional client authentication on TLS (#7250)
* Add optional client auth

* Add docs
2019-03-15 15:14:34 -07:00
Furkan KAMACI 7ada1c49f9 Prohibit Throwables.propagate() (#7121)
* Throw caught exception.

* Throw caught exceptions.

* Related checkstyle rule is added to prevent further bugs.

* RuntimeException() is used instead of Throwables.propagate().

* Missing import is added.

* Throwables are propogated if possible.

* Throwables are propogated if possible.

* Throwables are propogated if possible.

* Throwables are propogated if possible.

* * Checkstyle definition is improved.
* Throwables.propagate() usages are removed.

* Checkstyle pattern is changed for only scanning "Throwables.propagate(" instead of checking lookbehind.

* Throwable is kept before firing a Runtime Exception.

* Fix unused assignments.
2019-03-14 18:28:33 -03:00
Hongze Zhang f9d99b245b Add missing doc link for operations/http-compression.html; Fix magic numbers in test cases using JettyServerInitUtils.wrapWithDefaultGzipHandler (#7110) 2019-03-13 14:09:19 -07:00
Clint Wylie 3895914aa2 consolidate CompressionUtils.java since now in the same jar (#6908) 2019-03-13 11:02:44 -04:00
Clint Wylie 4d3987c1dd lifecycle stage refactor to ensure proper start and stop ordering of servers and announcements (#7234)
* lifecycle stage refactor to ensure proper ordering of servers and announcements

* move DerivativeDataSourceManager to Lifecycle.Stage.NORMAL
2019-03-12 07:09:03 -07:00
Jihoon Son e240fba247 Fix logs in SegmentLoaderLocalCacheManager (#7229) 2019-03-11 21:16:03 -07:00
Gian Merlino dcfca03718
More accurate RealtimeMetricsMonitor messages. (#7230)
The old messages did not reflect the full range of reasons why messages
could be thrown away.
2019-03-11 19:50:32 -04:00
Samarth Jain 8804bd0dc1 Remove unnecessary check for contains() in LoadRule (#7073)
See https://github.com/apache/incubator-druid/issues/7072
2019-03-11 13:52:46 -03:00
Clint Wylie 5cc171419c move jetty module to Lifecycle.Stage.LAST to allow graceful shutdown to work with lookups and stuff, put http-clint on lifecycle modules lifecycle (#7215) 2019-03-09 15:14:09 -08:00
Jihoon Son 9bebf113ba
Fix race in historical when loading segments in parallel (#7203)
* Fix race in historical when loading segments in parallel

* revert unnecessary change

* remove synchronized

* add reference counting locking

* fix build

* fix comment
2019-03-08 17:54:05 -08:00
Clint Wylie a44df6522c rename maintenance mode to decommission (#7154)
* rename maintenance mode to decommission

* review changes

* missed one

* fix straggler, add doc about decommissioning stalling if no active servers

* fix missed typo, docs

* refine docs

* doc changes, replace generals

* add explicit comment to mention suppressed stats for balanceTier

* rename decommissioningVelocity to decommissioningMaxSegmentsToMovePercent and update docs

* fix precondition check

* decommissioningMaxPercentOfMaxSegmentsToMove

* fix test

* fix test

* fixes
2019-03-08 16:33:51 -08:00
Roman Leventov 10c9f6d708
Fix and document concurrency of EventReceiverFirehose and TimedShutoffFirehose; Refine concurrency specification of Firehose (#7038)
#### `EventReceiverFirehoseFactory`
Fixed several concurrency bugs in `EventReceiverFirehoseFactory`:
 - Race condition over putting an entry into `producerSequences` in `checkProducerSequence()`.
 - `Stopwatch` used to measure time across threads, but it's a non-thread-safe class.
 - Use `System.nanoTime()` instead of `System.currentTimeMillis()` because the latter are [not suitable](https://stackoverflow.com/a/351571/648955)  for measuring time intervals.
 - `close()` was not synchronized by could be called from multiple threads concurrently.

Removed unnecessary `readLock` (protecting `hasMore()` and `nextRow()` which are always called from a single thread). Removed unnecessary `volatile` modifiers.

Documented threading model and concurrent control flow of `EventReceiverFirehose` instances.

**Important:** please read the updated Javadoc for `EventReceiverFirehose.addAll()`. It allows events from different requests (batches) to be interleaved in the buffer. Is this OK?

#### `TimedShutoffFirehoseFactory`
- Fixed a race condition that was possible because `close()` that was not properly synchronized.

Documented threading model and concurrent control flow of `TimedShutoffFirehose` instances.

#### `Firehose`

Refined concurrency contract of `Firehose` based on `EventReceiverFirehose` implementation. Importantly, now it states that `close()` doesn't affect `hasMore()` and `nextRow()` and could be called concurrently with them. In other words, specified that `close()` is for "row supply" side rather than "row consume" side. However, I didn't check that other `Firehose` implementatations adhere to this contract.

<hr>

This issue is the result of reviewing `EventReceiverFirehose` and `TimedShutoffFirehose` using [this checklist](https://medium.com/@leventov/code-review-checklist-java-concurrency-49398c326154).
2019-03-04 18:50:03 -03:00
Himanshu Pandey 8b803cbc22 Added checkstyle for "Methods starting with Capital Letters" (#7118)
* Added checkstyle for "Methods starting with Capital Letters" and changed the method names violating this.

* Un-abbreviate the method names in the calcite tests

* Fixed checkstyle errors

* Changed asserts position in the code
2019-02-23 20:10:31 -08:00
David Glasser 1c2753ab90 ParallelIndexSubTask: support ingestSegment in delegating factories (#7089)
IndexTask had special-cased code to properly send a TaskToolbox to a
IngestSegmentFirehoseFactory that's nested inside a CombiningFirehoseFactory,
but ParallelIndexSubTask didn't.

This change refactors IngestSegmentFirehoseFactory so that it doesn't need a
TaskToolbox; it instead gets a CoordinatorClient and a SegmentLoaderFactory
directly injected into it.

This also refactors SegmentLoaderFactory so it doesn't depend on
an injectable SegmentLoaderConfig, since its only method always
replaces the preconfigured SegmentLoaderConfig anyway.
This makes it possible to use SegmentLoaderFactory without setting
druid.segmentCaches.locations to some dummy value.

Another goal of this PR is to make it possible for IngestSegmentFirehoseFactory
to list data segments outside of connect() --- specifically, to make it a
FiniteFirehoseFactory which can query the coordinator in order to calculate its
splits. See #7048.

This also adds missing datasource name URL-encoding to an API used by
CoordinatorBasedSegmentHandoffNotifier.
2019-02-23 17:02:56 -08:00
Jihoon Son 4e2b085201
Remove DataSegmentFinder, InsertSegmentToDb, and descriptor.json file in deep storage (#6911)
* Remove DataSegmentFinder, InsertSegmentToDb, and descriptor.json file

* delete descriptor.file when killing segments

* fix test

* Add doc for ha

* improve warning
2019-02-20 15:10:29 -08:00
Mingming Qiu dd34691004 Coordinator await initialization before finishing startup (#6847)
* Curator server inventory await initialization

* address comments

* print exception object in log

* remove throws ISE

* cachingCost awaitInitialization default to false
2019-02-20 11:56:23 -08:00
Justin Borromeo c7eeeabf45 2528 Replace Incremental Index Global Flags with Getters (#7043)
* Eliminated reportParseExceptions and deserializeComplexMetrics

* Removed more global flags

* Cleanup

* Addressed Surekha's recommendations
2019-02-15 13:36:46 -08:00
Jihoon Son 1701fbcad3
Improve error message for revoked locks (#7035)
* Improve error message for revoked locks

* fix test

* fix test

* fix test

* fix toString
2019-02-13 11:22:48 -08:00
Jihoon Son d42de574d6 Add an api to get all lookup specs (#7025)
* Add an api to get all lookup specs

* add doc
2019-02-08 11:05:59 -08:00
Jonathan Wei fafbc4a80e
Set version to 0.15.0-incubating-SNAPSHOT (#7014) 2019-02-07 14:02:52 -08:00
Jonathan Wei 8bc5eaa908
Set version to 0.14.0-incubating-SNAPSHOT (#7003) 2019-02-04 19:36:20 -08:00
Egor Riashin 97b6407983 maintenance mode for Historical (#6349)
* maintenance mode for Historical

forbidden api fix, config deserialization fix

logging fix, unit tests

* addressed comments

* addressed comments

* a style fix

* addressed comments

* a unit-test fix due to recent code-refactoring

* docs & refactoring

* addressed comments

* addressed a LoadRule drop flaw

* post merge cleaning up
2019-02-04 18:11:00 -08:00
Roman Leventov 0e926e8652 Prohibit assigning concurrent maps into Map-typed variables and fields and fix a race condition in CoordinatorRuleManager (#6898)
* Prohibit assigning concurrent maps into Map-types variables and fields; Fix a race condition in CoordinatorRuleManager; improve logic in DirectDruidClient and ResourcePool

* Enforce that if compute(), computeIfAbsent(), computeIfPresent() or merge() is called on a ConcurrentHashMap, it's stored in a ConcurrentHashMap-typed variable, not ConcurrentMap; add comments explaining get()-before-computeIfAbsent() optimization; refactor Counters; fix a race condition in Intialization.java

* Remove unnecessary comment

* Checkstyle

* Fix getFromExtensions()

* Add a reference to the comment about guarded computeIfAbsent() optimization; IdentityHashMap optimization

* Fix UriCacheGeneratorTest

* Workaround issue with MaterializedViewQueryQueryToolChest

* Strengthen Appenderator's contract regarding concurrency
2019-02-04 09:18:12 -08:00
Surekha 7baa33049c Introduce published segment cache in broker (#6901)
* Add published segment cache in broker

* Change the DataSegment interner so it's not based on DataSEgment's equals only and size is preserved if set

* Added a trueEquals to DataSegment class

* Use separate interner for realtime and historical segments

* Remove trueEquals as it's not used anymore, change log message

* PR comments

* PR comments

* Fix tests

* PR comments

* Few more modification to

* change the coordinator api
* removeall segments at once from MetadataSegmentView in order to serve a more consistent view of published segments
* Change the poll behaviour to avoid multiple poll execution at same time

* minor changes

* PR comments

* PR comments

* Make the segment cache in broker off by default

* Added a config to PlannerConfig
* Moved MetadataSegmentView to sql module

* Add doc for new planner config

* Update documentation

* PR comments

* some more changes

* PR comments

* fix test

* remove unintentional change, whether to synchronize on lifecycleLock is still in discussion in PR

* minor changes

* some changes to initialization

* use pollPeriodInMS

* Add boolean cachePopulated to check if first poll succeeds

* Remove poll from start()

* take the log message out of condition in stop()
2019-02-02 22:27:13 -08:00
Vadim Ogievetsky 7f1b19bfb1 Adding a Unified web console. (#6923)
* Adding new web console.

* fixed css

* fix form height

* fix typo

* do import custom react-table css

* added repo field so npm does not complain

* ask travis for node 10

* move indexing-service/src/main/resources/indexer_static into web-console

* fix resource names and paths

* add licenses

* fix exclude file

* add licenses to misc files and tidy up

* remove rebase marker

* fix link

* updated env variable name

* tidy up licenses and surface errors

* cleanup

* remove unused code, fix missing await

* TeamCity does not like the name aux

* add more links to tasks view

* rm pages

* update gitignore

* update readme to be accurate

* make clean script

* removed old console dependancy

* update Jetty routes

* add a comment for welcome files for coordinator

* do not show inital notifaction for now

* renamed overlord console back to console.html

* fix coordinator console

* rename coordinator-console.html to index.html
2019-01-31 17:26:41 -08:00
Jihoon Son e56c598cc1 Fall back to the old coordinator API for checking segment handoff if new one is not supported (#6966) 2019-01-31 08:50:46 -08:00
Benedict Jin 72a571fbf7 For performance reasons, use `java.util.Base64` instead of Base64 in Apache Commons Codec and Guava (#6913)
* * Add few methods about base64 into StringUtils

* Use `java.util.Base64` instead of others

* Add org.apache.commons.codec.binary.Base64 & com.google.common.io.BaseEncoding into druid-forbidden-apis

* Rename encodeBase64String & decodeBase64String

* Update druid-forbidden-apis
2019-01-25 17:32:29 -08:00
Roman Leventov 8eae26fd4e Introduce SegmentId class (#6370)
* Introduce SegmentId class

* tmp

* Fix SelectQueryRunnerTest

* Fix indentation

* Fixes

* Remove Comparators.inverse() tests

* Refinements

* Fix tests

* Fix more tests

* Remove duplicate DataSegmentTest, fixes #6064

* SegmentDescriptor doc

* Fix SQLMetadataStorageUpdaterJobHandler

* Fix DataSegment deserialization for ignoring id

* Add comments

* More comments

* Address more comments

* Fix compilation

* Restore segment2 in SystemSchemaTest according to a comment

* Fix style

* fix testServerSegmentsTable

* Fix compilation

* Add comments about why SegmentId and SegmentIdWithShardSpec are separate classes

* Fix SystemSchemaTest

* Fix style

* Compare SegmentDescriptor with SegmentId in Javadoc and comments rather than with DataSegment

* Remove a link, see https://youtrack.jetbrains.com/issue/IDEA-205164

* Fix compilation
2019-01-21 11:11:10 -08:00
Clint Wylie 8ba33b2505 add 'init' lifecycle stage for finer control over startup and shutdown (#6864)
* add Lifecycle.Stage.INIT, put log shutter downer in init stage, tests, rad startup banner

* log cleanup

* log changes

* add task-master lifecycle to module lifecycle to gracefully stop task-master stuff

* fix it the right way

* remove announce spam

* unused import

* one more log

* updated comments

* wrap leadership lifecycle stop to prevent exceptions from wrecking rest of task master stop

* add precondition check
2019-01-21 09:01:36 -08:00
Mingming Qiu b704ebfa37 Let cachingCost balancer strategy only consider segment replicatable nodes (#6879) 2019-01-17 09:26:33 -08:00
Jihoon Son a07e66c540 Fix auto compaction to compact only same or abutting intervals (#6808)
* Fix auto compaction to compact only same or abutting intervals

* fix test
2019-01-16 14:54:11 -08:00
Dayue Gao 5b8a221713 Add SQL id, request logs, and metrics (#6302)
* use SqlLifecyle to manage sql execution, add sqlId

* add sql request logger

* fix UT

* rename sqlId to sqlQueryId, sql/time to sqlQuery/time, etc

* add docs and more sql request logger impls

* add UT for http and jdbc

* fix forbidden use of com.google.common.base.Charsets

* fix UT in QuantileSqlAggregatorTest, supressed unused warning of getSqlQueryId

* do not use default method in QueryMetrics interface

* capitalize 'sql' everywhere in the non-property parts of the docs

* use RequestLogger interface to log sql query

* minor bugfixes and add switching request logger

* add filePattern configs for FileRequestLogger

* address review comments, adjust sql request log format

* fix inspection error

* try SuppressWarnings("RedundantThrows") to fix inspection error on ComposingRequestLoggerProvider
2019-01-15 23:12:59 -08:00
Jonathan Wei 8537a771b0 Some fixes and tests for spaces/non-ASCII chars in datasource names (#6761)
* Fixes and tests for spaces/non-ASCII datasource names

* Some unit test fixes

* Fix ITRealtimeIndexTaskTest

* Checkstyle

* TeamCity

* PR comments
2019-01-15 08:33:31 -08:00
Surekha f72f33f84a Fix num_replicas count in sys.segments table (#6804)
* Fix num_replicas count from sys.segments

* Adjust unit test for num_replica > 1

* Pass named arguments instead of passing boolean constants

* Address PR comments

* PR comments
2019-01-15 08:31:29 -08:00
Charles Allen 5d2947cd52 Use Guava Compatible immediate executor service (#6815)
* Use multi-guava version friendly direct executor implementation

* Don't use a singleton

* Fix strict compliation complaints

* Copy Guava's DirectExecutor

* Fix javadoc

* Imports are the devil
2019-01-11 10:42:19 -08:00