Contributing Search
All the projects below have beginner-friendly issues which are great places to start contributing
262 results
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akka/akka
A platform to build and run apps that are elastic, agile, and resilient. SDK, libraries, and hosted environments.
- #32797 - Failed: PendingGetShardHomesSpec
- #32789 - feat: Add self-healing capabilities around shard state consistency
- #32782 - failed: ShutdownAfterJoinSeedNodesSpec
- #32778 - Failed: Multi node test GKE cluster InternalError
- #32777 - Failed: ClusterSingletonApiSpec (Aeron UDP)
- #32776 - Failed: BasicClusterManualSpec
Contributing Guide Code of Conduct -
twitter/finagle
A fault tolerant, protocol-agnostic RPC system
- #971 - LengthFieldFramer.apply in Scala 2.13 broken since Commit dc6680b
- #970 - New release for finagle with netty vlunerability fix
- #968 - Feature Request: Emoji Hashtags/Cashtags
- #965 - Client with TLS configuration not working on version v22.12.0 onwards - java.lang.IllegalArgumentException: ApplicationProtocols.Supported is not supported at this time for SslContextClientEngineFactory. Remote Info: Not Available
- #964 - Update the Netty to latest version (4.1.108.Final) - Vulnerability CVE-2024-29025
- #962 - finagle-http: Http methodbuilder does not allow setting sendInterrupts flag to backup request filter
Contributing Guide Code of Conduct -
playframework/playframework
The Community Maintained High Velocity Web Framework For Java and Scala.
- #13523 - Document sbt-digest's `indexWriter` to make use of fingerprinted assets in JavaScript
- #13513 - Gradle Plugin: "playRun" and project dependencies
- #13512 - Gradle Plugin: Gradle "project" system property
- #13483 - Compatibility with Selenium 4.35+
- #13458 - Will play 3.x supports ratelimit
- #13436 - GuiceApplicationBuilder bind method doesn't support generic types
Contributing Guide Code of Conduct -
typelevel/cats
Lightweight, modular, and extensible library for functional programming.
- #4770 - Tuple semigroupal syntax widens constant type in Scala 3
- #4763 - `NonEmptyList` lacks def `updated` at index
- #4757 - Hierarchy of cats effect in Cats documentation does not match the one in the cats effect docs
- #4746 - Scala 3: Support `mapN` for tuples greater than 22
- #4727 - Monad Transformer typeclass
- #4709 - Add withFilter to FunctorFilter.Ops
Contributing Guide Code of Conduct -
linkerd/linkerd
Old repo for Linkerd 1.x. See the linkerd2 repo for Linkerd 2.x.
- #2462 - m installing linkerd on the AKS cluster & getting the below error
- #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
Contributing Guide Code of Conduct -
sbt/sbt
sbt, the interactive build tool
- #8288 - Automate derivation of JsonFormats where possible
- #8286 - sbt 1.11.6 with Java 25 sun.misc.Unsafe warnings
- #8264 - Display more info when bundle upload fails
- #8262 - [2.x] sbt 2.x ProjectMatrix missing crossVersion support
- #8256 - [2.x] sbtn run errors out
- #8248 - [2.x] `Overlapping output directories` if same name
Contributing Guide Code of Conduct -
microsoft/synapseml
Simple and Distributed Machine Learning
- #2420 - [BUG] AzureSearchWriter sends GeographyPoint field as JSON string instead of GeoJSON object, causing Azure AI Search request failure.
- #2417 - [BUG] ONNXModel fails in local Spark 3.5.6 environment
- #2416 - How do I generate the evaluation results when using early stopping
- #2414 - For spark 3.1.1, which version of SynapseML should I choose?
- #2411 - Quantization Light GBM
- #2406 - Adding custom callback functions parameter to LightGBMRegressor (e.g. pruning callback for Optuna HPO)
Contributing Guide Code of Conduct -
chipsalliance/chisel
Chisel: A Modern Hardware Design Language
- #5022 - Deprecation warning when using `(new ChiselStage).execute()`
- #5001 - HierarchicalModuleName does not work with assert
- #4996 - `stop(msg)` does not emit correct verilog
- #4986 - Allow zero length VecInit()
- #4984 - Chisel asserts should give file and line number to Chisel as well as systemverilog
- #4963 - ImportedDefinitionExtModule does not include secret ports (bores)
Contributing Guide Code of Conduct -
zio/zio
ZIO — A type-safe, composable library for async and concurrent programming in Scala
- #10165 - zio-test: test lensing broken with opaque types
- #10145 - PR maintainance automation
- #10130 - TestClock Example 5 never terminates
- #10097 - fails to build with `contributing.md`
- #10095 - `ZStream` logs explicitly ignored error as unhandled
- #10088 - ZStream.mapZIOPar can get stuck in case of failures
Contributing Guide Code of Conduct -
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
- #5233 - [Kernel] Build benchmarking infrastructure
- #5228 - [Feature Request][Flink] Add support of Flink 2.0
- #5227 - [Feature Request]Fix potential float -> double casting issue and align in expression with comparator "=" implementation
- #5225 - [Feature Request] Handle unsupported data types in kernel-spark connector
- #5191 - [Feature Request] Support RANDOMIZE_FILE_PREFIXES
- #5178 - [BUG][Spark] Unable to write to Postgres database using JDBC due to configure_spark_with_delta_pip
Contributing Guide Code of Conduct -
chipsalliance/rocket-chip
Rocket Chip Generator
- #3756 - The system starts up particularly slowly,Copying data from the SD card is particularly slow.
- #3755 - Support for Cache Discard Instruction (e.g., CDISCARD) in Rocketchip
- #3753 - Query Regarding tohost System Call Handling in Rocket Chip
- #3752 - Query Regarding Memory Access Exception Handling in Rocket Chip
- #3751 - Query Regarding Simulator Discrepancies in Exception Handling and Data Consistency for Specific Memory Accesses
- #3750 - How to enable many RoCC accelerators with RocketChip?
Contributing Guide Code of Conduct -
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
Contributing Guide Code of Conduct -
slick/slick
Slick (Scala Language Integrated Connection Kit) is a modern database query and access library for Scala
- #3268 - distinctOn doesn't work with "outer" sortBy without explicit subquery
- #3234 - Compilation hangs if the case class has a new field but slick.relational.Table doesn't have the new field yet. This is only true when using HNil
- #3051 - Scala 3: 22 fields limitation still exists
- #3030 - Java 8 support broken in Slick 3.5.2
- #3027 - Support Unique constraints (on multiple columns), and other constraints (such as Check constraints perhaps)
- #3026 - OracleProfile LocalDateTime can have 9 nanoseconds numbers but there is a restriction to just 3 in OracleProfile
Contributing Guide Code of Conduct -
http4s/http4s
A minimal, idiomatic Scala interface for HTTP
- #7697 - `Path.toRelative` can produce absolute paths
- #7696 - Path normalization turns absolute paths into relative ones
- #7668 - Ember server doesn't send full message without TCP_NODELAY
- #7655 - Ember Client fails when response completes before request
- #7648 - Support StaticFile on Native
- #7621 - Concerns regarding the use of `unsafeRunSync()` in logging functionality
Contributing Guide Code of Conduct -
circe/circe
Yet another JSON library for Scala
- #2393 - Automatic derivation of Codec for Scala 3 union types
- #2392 - Domain name registration
- #2386 - Road to version 1.0
- #2379 - Decoders derived with Configuration#strictDecoding fail fast at `decodeAccumulating`
- #2365 - No given instance of type io.circe.derivation.Default[this.Message] was found
- #2351 - How to remove null values in dictionaries and collections
Contributing Guide Code of Conduct -
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typelevel/fs2
Compositional, streaming I/O library for Scala
- #3611 - Private key and certificates on repo
- #3608 - Create another version of groupWithin() which won't create a singleton chunk when elements are available in bulk after being idle for a long time
- #3607 - Unexpected behavior of onFinalize behavior
- #3605 - Add support for QUIC to fs2.io.net
- #3598 - Some streams merged with `merge` stop emitting when downstream does certain actions
- #3595 - Investigate intermittent test failure in ParEvalMapSuite
Contributing Guide Code of Conduct -
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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
- #579 - Docs & scaladoc websites are down
- #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
Contributing Guide Code of Conduct -
scalameta/metals
Scala language server with rich IDE features 🚀
- #7806 - assertion failed: (List(Stamp(2025-08-22T19:27:47.78801775Z,2031,(dev=100012,ino=15130407))),0)
- #7804 - scala.reflect.internal.FatalError:
- #7803 - java.lang.NullPointerException: Cannot read the array length because "a" is null
- #7802 - java.lang.ArrayIndexOutOfBoundsException
- #7801 - empty definition using pc, found symbol in pc
- #7800 - java.lang.AssertionError: assertion failed: TypeName ... is missing its correspondent
Contributing Guide Code of Conduct
