Contributing Search
All the projects below have beginner-friendly issues which are great places to start contributing
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playframework/playframework
The Community Maintained High Velocity Web Framework For Java and Scala.
- #12530 - Play gradle plugin fails to create playRun task when no compileScala task found in a project
- #12521 - play 2.9 is trying to fetch guice-6.0.0-no_aop jar, caused not found error
- #12520 - Support for Application Secret rotation
- #12501 - Timeout issue when using AsyncCacheApi and custom http filter
- #12485 - Recommend Scala Metals + VSCode as an IDE on this page: https://www.playframework.com/documentation/2.9.x/IDE
- #12484 - Asset changes in subprojects
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twitter/finagle
A fault tolerant, protocol-agnostic RPC system
- #962 - finagle-http: Http methodbuilder does not allow setting sendInterrupts flag to backup request filter
- #955 - com.twitter.finagle.Http not work
- #953 - How to use the partitioning strategy with the http client?
- #952 - Cors Filter does an add to the HeaderMap instead of set
- #950 - Homepage broken image
- #946 - How do you calculate your retry budget?
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akka/akka
Build highly concurrent, distributed, and resilient message-driven applications on the JVM
- #32401 - failed: MetricsBasedResizerSpec
- #32400 - Failed: ReplicatedMetricsSpec
- #32372 - NotInfluenceReceiveTimeout does not work consistently with typed responses
- #32364 - Update to slf4j 2.0
- #32359 - EventSourcedBehavior.lastSequenceNumber incorrect values after recovery
- #32345 - Document how to test DurableState using testkit
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typelevel/cats
Lightweight, modular, and extensible library for functional programming.
- #4587 - Support Scala Native 0.5
- #4570 - trait EuclidianRing should not be a Ring
- #4562 - Instances for Currency
- #4555 - `Tuple1SemigroupalOps` methods have different names from other `TupleNSemigroupalOps` classes
- #4545 - Difference in the Applicative inferred for Seq[Seq[?]]#sequence between Scala 2 and 3
- #4543 - .splitWhen
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linkerd/linkerd
Old repo for Linkerd 1.x. See the linkerd2 repo for Linkerd 2.x.
- #2460 - ZooKeeper server set namer `io.l5d.serversets` appears to leak ZooKeeper watches
- #2451 - Namerd version admin port
- #2446 - serverSession: idleTimeMs times out while there is activity
- #2442 - We are running Namerd & Consul cluster in our environment ,getting below error frequently and that break application communication
- #2411 - Linkerd sporadically stops watching remote addresses in Namerd with thrift interpreter
- #2403 - pull-destination-proto.sh should use a pinned version
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sbt/sbt
sbt, the interactive build tool
- #7546 - Pipelining prevents Java compilation with `compileOrder := JavaThenScala` config
- #7540 - Allow the sbt launcher to be called programmatcially without running into an `exit` call
- #7542 - "java.lang.Boolean cannot be cast to class java.lang.String" on Play's run task
- #7527 - sbt in `--client` mode loses stdout/stderr of the forked processes in continuous (watch) task mode after the task ir reevaluated
- #7514 - `getClass.getResource` yields wrong result using 1.9.9 with `sbtPlugin := true`
- #7511 - Packages including "scala-library" in its name cannot be imported by other projects.
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microsoft/synapseml
Simple and Distributed Machine Learning
- #2213 - [BUG] java.lang.NoSuchMethodError when using synapse.ml.lightgbm
- #2212 - [BUG] `java.lang.NoSuchMethodError` when using `ComputeModelStatistics.transform()`
- #2209 - Support for Microsoft Entra authentication
- #2206 - [BUG] `Java heap space` when running Tabular Explainers.ipynb
- #2188 - [BUG]NoSuchMethodError breeze.linalg.SliceVector
- #2185 - Please provide detailed Scala documentation.
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zio/zio
ZIO — A type-safe, composable library for async and concurrent programming in Scala
- #8783 - ZStream: Using `timeoutFail` logs an unhandled error
- #8782 - Cloning Zio-QuickStarts in Overview Guides Results in Fatal if User has Incorrect Rights
- #8769 - 2.1.0-RC2: Something is hanging in the fiber world
- #8754 - Comparing Chunk to Seq causes ClassCastException
- #8753 - mapZIOParUnordered does not respect parallelism
- #8749 - Zlayer issue - Ambiguous layer with opaque type
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twitter/scalding
A Scala API for Cascading
- #2001 - my account is closed
- #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
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delta-io/delta
An open-source storage framework that enables building a Lakehouse architecture with compute engines including Spark, PrestoDB, Flink, Trino, and Hive and APIs
- #2943 - [BUG][Spark] Deletion Vectors can cause `AMBIGUOUS_REFERENCE` errors on MERGE
- #2942 - [BUG] Missing Partition Filters on renamed Columns after Join
- #2940 - [BUG][SPARK] Using a temp view in a MERGE INTO spark sql statement leads to MISSING_ATTRIBUTES.RESOLVED_ATTRIBUTE_MISSING_FROM_INPUT error
- #2929 - [Kernel][Refactoring] Separate out the delta file and stats parsing logic in `DefaultJsonHandler`
- #2908 - [Kernel] Support reading `timestamp_ntz` stored as INT96
- #2904 - [BUG][SPARK] Infinite loops when has foldable dataFilter in data skipping
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slick/slick
Slick (Scala Language Integrated Connection Kit) is a modern database query and access library for Scala
- #2933 - `provided` dependency on `scala-compiler` leads to runtime crashes of projects using slick
- #2920 - Fix issues with MiMa ignoring filter
- #2914 - 3.5.0 filter === fails with scala3
- #2890 - Add scalafmt to slick
- #2878 - Conveniences that could be added to DBIO
- #2827 - Codegen - Invalid Defaults in Case Classes and Table-Definitions
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http4s/http4s
A minimal, idiomatic Scala interface for HTTP
- #7434 - Client: A header from Play Framework unsetting a cookie isn't properly parsed into Response.cookies
- #7431 - Add support for comma separated headers
- #7408 - Feedback on Multipart
- #7388 - RFC: Automate opening a PR with merge 0.23 -> main
- #7382 - Extend capabilities of http4s DSL to cover complex use cases of uri template
- #7370 - Running `lint` results in errors
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twitter/util
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typelevel/fs2
Compositional, streaming I/O library for Scala
- #3419 - Introduce higher-level "network client" APIs
- #3406 - DatagramSocket read stalls on JVM
- #3376 - failed: fs2.io.net.udp.UdpSuite.udp
- #3351 - Optimize `Stream#evalTapChunk`
- #3328 - Feature request: Dynamic metering of Streams
- #3311 - parEvalMap messes up unmasking of cancellation
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twitter/algebird
Abstract Algebra for Scala
- #1127 - `MinHasher32` tests are flaky
- #1122 - SketchMap is not commutative
- #1109 - Release v.0.13.10
- #1099 - Scala 3 support?
- #959 - SparseVector monoid flake
- #856 - Investigate flaky `com.twitter.algebird.CollectionSpecification` test
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salesforce/transmogrifai
TransmogrifAI (pronounced trăns-mŏgˈrə-fī) is an AutoML library for building modular, reusable, strongly typed machine learning workflows on Apache Spark with minimal hand-tuning
- #557 - Make RecordInsightsLOCO perform reasonable calculation on numeric features and fix the name to reflect actual calculation.
- #556 - Changing imputation for nulls in DateToUnitCircleTransformer
- #543 - Failed to run titanic example, got java.lang.AbstractMethodError
- #539 - Normalize special characters in string
- #535 - UV Computation
- #531 - Release drafter
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zio/zio-quill
Compile-time Language Integrated Queries for Scala
- #3018 - Pgvector can be written but can't be read
- #2985 - Doobie LogHandler dont work with a quill
- #2978 - `Query.update(T => (Any, Any), (T => (Any, Any))*)` does not support `Seq()*` style notation.
- #2974 - Compilation Error When Filtering on Aggregation Functions
- #2944 - Error with Batch Update
- #2914 - SQL Query Generation Error: Unquoted Keywords Causes Statement Errors with Postgres
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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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scalameta/metals
Scala language server with rich IDE features 🚀
- #6333 - Metals 1.3.0 under Windows cannot run scala-cli project main through cmd.exe
- #6331 - Add more Scala 3 LSP tests for symbol search
- #6315 - hover types fails with type alias
- #6304 - Index type hierarchy for JDK
- #6296 - Metals suggests invalid completion that is private within
- #6294 - Indexing fails on files with ` in file name
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twitter/finatra
Fast, testable, Scala services built on TwitterServer and Finagle
- #590 - Wrong usage of QueryStringDecoder.decodeComponent in PathPattern
- #587 - How to achieve graceful server shutdown for environments that rely on healthcheck to mark nodes unhealthy
- #584 - MDC and Log4J2 do not get along very well
- #583 - Restricting/removing admin routes
- #582 - expose JsonStreamParser
- #576 - Tests of examples/http-server failing
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