Contributing Search
All the projects below have beginner-friendly issues which are great places to start contributing
52 results
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playframework/playframework
Play Framework
- #11450 - Tailwind CSS framework support
- #11447 - Documentation- two of the authentication and authorisation modules listed in the module directory are no longer maintained
- #11439 - Routes cannot route a method whose name is a reserved word.
- #11404 - Add a new HTTP engine that supports HTTP/2
- #11323 - Websockt close status code
- #11303 - Fails to convert error to PlayException/UsefulException
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twitter/finagle
A fault tolerant, protocol-agnostic RPC system
- #936 - DeadlineFilter takes `rejectWithdrawal` regardless of passed Deadline
- #935 - Growth of the number of prepared statements on server
- #932 - Scala 3 support
- #930 - Migration to Mysql 8.0
- #925 - Nested transactions are stuck
- #924 - ServerRegistry not refreshing certificate information
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akka/akka
Build highly concurrent, distributed, and resilient message-driven applications on the JVM
- #31641 - Link errors
- #31637 - Requirement failed when starting Sharding with separate Coordinator role
- #31636 - Optimize Source.queue with MpscArrayQueue?
- #31626 - Add a Flow#handle?
- #31625 - Deprecate statefulMapConcat
- #31624 - Failed: PersistentActorRecoveryTimeoutSpec
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typelevel/cats
Lightweight, modular, and extensible library for functional programming.
- #4304 - Can't use Scala 3 artifact with Scala 2
- #4295 - Unnecessary Order param for SortedMap/NonEmptyMap Cogen
- #4286 - Add bridge from Throwable to E for ApplicativeError
- #4284 - remove Hash law that it equals `.hashCode`
- #4280 - upgrading to Cats 2.8.0 causes scalac exception during compilation of downstream lib
- #4263 - replicateA_ consistency tests creates very large values
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sbt/sbt
sbt, the interactive build tool
- #7020 - sbt new returns exite code 0 even when it fails
- #7019 - Cannot fit name [.../sbt-load.sock] in maximum unix domain socket length
- #7018 - fuzzymode: Multiple crossScalaVersions matched query
- #7017 - sbt 1.7.1 batch mode terminates after ReloadOnSourceChanges
- #7012 - sbtn should reevaluate env variables
- #7009 - Stdout suppress on shutdown
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twitter/scalding
A Scala API for Cascading
- #1998 - duplicate tags in pom files
- #1997 - incompatibility with recent java8 runtime environments due to hadoop
- #1988 - [Proposal] Support more sinks/sources in scalding-spark
- #1979 - Beam backend is missing some pipes
- #1971 - flake on optimization test
- #1955 - Optimizing KyroCoder in beam backend
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slick/slick
Slick (Scala Language Integrated Connection Kit) is a modern database query and access library for Scala
- #2567 - Documentation: the database migration tools Forklift and Flyway are abandonware
- #2531 - codegen: Null default values on numerics not handled correctly (e.g. "Null:numeric")
- #2453 - Dependency Dashboard
- #2430 - ManagedArrayBlockingQueue permanently reduces throughput when session release throws
- #2422 - groupBy does not allow group key in the nested query
- #2309 - DB2 dependency not found error in GitHub Actions CI
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http4s/http4s
A minimal, idiomatic Scala interface for HTTP
- #6732 - Ember and Blaze backends suffer from sudden response time spikes along with broken timeout
- #6721 - ember server: don't include log4cats-slf4j
- #6720 - RFC: A better data structure for `Headers`
- #6703 - Ember initial connect timeout not working
- #6694 - Using the client to decode Server Sent Events misbehaves on both JVM and JS
- #6689 - Add disclaimer about unsafeRunSync in docs
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twitter/algebird
Abstract Algebra for Scala
- #959 - SparseVector monoid flake
- #856 - Investigate flaky `com.twitter.algebird.CollectionSpecification` test
- #851 - configure mergify.io
- #762 - investigate flaky test on AdaptiveVector
- #741 - Add combinators on Semigroup, Monoid, Aggregator to reverse order.
- #733 - The GeneratedTupleAggregator is not recognized
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twitter/summingbird
Streaming MapReduce with Scalding and Storm
- #773 - Use more container than chain
- #760 - Summingbird batch doesn't work with the latest Scalding develop
- #749 - storm platform sometimes makes nodes with only merges
- #746 - summingbird does not preserve equality on Producers
- #743 - optionMap not being fused with flatMap in storm
- #741 - Remove `ArbitraryWorkaround` class when scala check release will be out
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twitter/finatra
Fast, testable, Scala services built on TwitterServer and Finagle
- #582 - expose JsonStreamParser
- #576 - Tests of examples/http-server failing
- #569 - bad link in readme.md 404
- #559 - Upgrade Guice to 5.0.1+
- #542 - Location scheme should not always correspond to X-Forwarded-Proto
- #538 - File Upload as a Stream
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monix/monix
Asynchronous, Reactive Programming for Scala and Scala.js.
- #1644 - Atomic.transformAndExtract fails to compare case class
- #1633 - Proposal for a Observer/Shadow mode flag for Circuit Breaker
- #1628 - switchMap never completes on empty Observable
- #1588 - Scheduler.forkJoin stops executing tasks after reaching its maximum thread count
- #1587 - Maybe: Remove Features from Scheduler
- #1580 - ConcurrentChannel has a flaky test — to investigate
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spotify/scio
A Scala API for Apache Beam and Google Cloud Dataflow.
- #4535 - NPE on 0.12.0 SNAPSHOT when setting gcpTempLocation
- #4528 - MutableScalableBloomFilter docs are misleading
- #4527 - Add CoderAssertions for Coder payload stability
- #4515 - Tests are failing on Apple M1 machine
- #4513 - Support parameterized rate limit via ValueProvider for RateLimiterDoFn
- #4512 - PubSubIO.WriteParam isn't inferred correctly in IntelliJ for subtypes
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lagom/lagom
Reactive Microservices for the JVM
- #3352 - At-most-once for Read Side Processor
- #3351 - `atLeastOnce` Kafka Consumer not restarting on error
- #3348 - Lagom bom-pom includes transitive dependencies
- #3328 - [epic] reduce repository maintenance cost
- #3305 - Compilation failed - breakCompilation
- #3304 - Circuit breaker panel memory leak (?)
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typelevel/spire
Powerful new number types and numeric abstractions for Scala.
- #1198 - Jar content files has future date
- #1124 - Fast-path for rounding `Real`
- #1105 - `NaturalScalaCheckSuite.x % y` failed on Scala.js
- #981 - Port outdated benchmarks
- #969 - Investigate using numeric literals with dotty
- #923 - ConvertibleFrom/ConvertibleTo for unsigned types
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typelevel/cats-effect
The pure asynchronous runtime for Scala
- #3191 - Kamon traces aren't connected for 3.4.0-RC1
- #3187 - MPSC race condition in `Queue`
- #3181 - Specialize primitive `Ref`s during construction
- #3169 - Run the `IOAppSpec` on Native
- #3167 - Tracing for Scala Native
- #3152 - Add a combinator which eats unhandled errors
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japgolly/scalajs-react
Facebook's React on Scala.JS
- #1078 - Add support for Discussions tab in Github
- #1076 - Missing getDerivedStateFromError
- #1075 - Compilation fails in Scala 3 when deriving Reusability for case classes with multiple parameter groups
- #1074 - Syntax to integrate `useContext` with context function in Scala 3
- #1071 - Is there a way to integrate Components with cats.effect.Ref?
- #1067 - Re-evaluate `ComponentDom` post- React 18
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scala-exercises/scala-exercises
The easy way to learn Scala.
- #1156 - HTTPS certificate expired at www.scala-exercises.org
- #1135 - Scala 3
- #1096 - Stdlib Sets docs error
- #1067 - New contributions blocked by java 9 permissions
- #1054 - Reset user progress
- #929 - Upgrade monocle dep
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sbt/sbt-native-packager
sbt Native Packager
- #1518 - Option to enable Docker buildkit
- #1517 - sbt-native-packager using 2.x of scala-xml which is incompatible with scala 2.12 and sbt
- #1515 - Upgrade commons-compress version
- #1506 - `exec: line 1: /opt/docker/jre/bin/java: not found` when trying to use docker image build with jlink
- #1505 - dockerBuildInit doesn't work
- #1504 - Remove out-of-date native packager documentation from scala-sbt.org
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akka/alpakka-kafka
Alpakka Kafka connector - Alpakka is a Reactive Enterprise Integration library for Java and Scala, based on Reactive Streams and Akka.
- #1542 - failed: AtLeastOnceTest
- #1503 - Consumer clientId=consumer-A-1, groupId=A] Adding newly assigned partitions:
- #1494 - Possiblity to inject a Strategy to KafkaClusterSharding
- #1472 - New method for a completeable `takeWhile`
- #1471 - Add partitioned transactional source phase 2
- #1433 - Kafka consumer stops without errors
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