twitter/algebird

A new \AlgebirdBijections\ module was added to provide implicit conversions between Algebird's algebraic types (Semigroup, Monoid, Group, and Ring) and their corresponding bijection-wrapped counterparts. This allows users to leverage bijection capabilities on these algebraic structures, enabling seamless conversion and manipulation of these types within the bijection framework.

algebird-bijection/src/main · high confidence

The algebird-generic module now provides algebraic typeclass instances for Shapeless HLists, enabling users to perform semigroup, monoid, group, and ring operations on heterogeneous lists. This includes new implementations for ordering and equivalence checks, as well as summing capabilities for HLists, allowing algebraic operations to be lifted to generic representations of case classes.

algebird-generic · high confidence

A new macro, \ArbitraryCaseClassMacro\, has been added to the \algebird-test\ module. This macro automatically generates \Arbitrary\ instances for case classes using ScalaCheck, allowing for easier property-based testing of case class structures. The implementation includes helper methods \caseClassGen\ and \caseClassArbitrary\ that reflect on the type to generate appropriate generators.

algebird-test/src/main/scala/com/twitter/algebird/macros · high confidence

The repository now includes standard governance and contribution documentation. A new \COMMITTERS.md\ file lists active and emeritus committers, while \CONTRIBUTING.md\ provides guidelines for pull requests, testing, and documentation. The \LICENSE\ file establishes the Apache 2.0 license terms, and \NOTICE\ credits the Apache Software Foundation for the MurmurHash implementation. Additionally, \.gitignore\ and \.jvmopts\ files are added to manage build artifacts and JVM options, and \README.md\ is expanded with badges, usage examples, and project information.

(repo-wide) · high confidence

Added a suite of JMH micro-benchmarks for various Algebird components, including QTree, Moments, Bloom Filters, Count-Min Sketch, HyperLogLog, and Tuple4 operations. These new benchmark files provide performance measurements for core library functionality.

algebird-benchmark/src · high confidence

New ScalaCheck Arbitrary and Gen instances have been added for Algebird types, including ExpHist, Interval, NonEmptyVector, PosNum, and others. This enables automatic generation of test data for these structures in property-based tests.

algebird-test/src/main/scala/com/twitter/algebird/scalacheck · high confidence

Added new Scala files introducing \TunnelMonoid\ and \PromiseLinkMonoid\ to support asynchronous computation patterns, allowing code to depend on the results of async operations. Additionally, \UtilAlgebras\ provides implicit Monad instances for \Future\ and \Try\, along with Applicative Semigroups and Monoids for these types, enabling functional programming abstractions over asynchronous and partial result types.

algebird-util/src/main/scala/com/twitter/algebird/util · high confidence

Two new Ruby scripts, \ntuple\_generators.rb\ and \product\_generators.rb\, have been added to the \scripts\ directory. These scripts automatically generate Scala code for product and tuple algebraic structures (semigroups, monoids, groups, and rings) up to size 22. Running the scripts produces \GeneratedAbstractAlgebra.scala\ and \GeneratedProductAlgebra.scala\ respectively, providing users with pre-generated implementations for common algebraic operations on tuples and products.

scripts · high confidence

Added Java API classes (Monoids, Semigroups, MethodRegistry) to allow Java code to easily access Algebird's algebraic structures. Additionally, introduced Scala 2.12 and 2.13 specific compatibility files (compat.scala, MacroCompat.scala, etc.) to handle library differences between Scala versions, ensuring the core library functions correctly across both versions.

algebird-core/src/main · high confidence

A new \AlgebirdRDD\ class and \ToAlgebird\ implicit conversion are added to the \algebird-spark\ module, enabling users to call Algebird aggregators (such as \aggregate\, \aggregateOption\, \sum\, and \sumByKey\) directly on Spark RDDs. This provides a convenient API for performing distributed algebraic computations on Spark data structures.

algebird-spark/src/main · high confidence

The \algebird-util\ module now includes a suite of asynchronous summer implementations (\AsyncListSum\, \AsyncMapSum\, \AsyncListMMapSum\, \SyncSummingQueue\, and \HeavyHittersCachingSummer\) that enable non-blocking, concurrent accumulation of key-value pairs. These components provide configurable buffer sizes, memory-based and timeout-based flush conditions, and optional heavy-hitters tracking to optimize memory usage and processing speed for streaming workloads.

algebird-util/src/main/scala/com/twitter/algebird/util/summer · high confidence

The project's build configuration has been updated to use sbt version 1.9.9, as specified in the new project/build.properties file. Additionally, the project/plugins.sbt file has been created to explicitly define the versions of various sbt plugins, including sbt-microsites (1.4.4), sbt-unidoc (0.5.0), sbt-scalafmt (2.5.2), sbt-mima-plugin (1.1.3), sbt-scoverage (2.0.10), sbt-jmh (0.4.7), sbt-scalafix (0.11.1), and sbt-ci-release (1.5.12). A new code generator, GenTupleAggregators.scala, has been added to the project directory, which is responsible for generating tuple and map aggregator implementations.

project · high confidence

Add compilation test for algebraic type resolution; Added Java API tests for Semigroups and Monoids; Added compilation test for AlgebirdRDD API; Added empty test scaffold for AlgebirdBijectionLaws; Added property-based tests for Future and Try algebraic structures; Added property-based tests for async and sync summer implementations; Added property-based tests for case class macro-generated algebraic structures; Added unit tests for Gaussian distribution and statistics monoids; Adds property-based tests for algebraic structures and utility classes; Expanded test coverage for algebraic structures and aggregators.

The build configuration has been updated with newer versions of several libraries, including Scala 2.12.18, ScalaTest 3.2.18, ScalaCheck 1.15.2, JUnit 4.13.2, and Spark 2.4.8. The project now supports Scala 2.11, 2.12, and 2.13, with specific compiler flags and source directory structures configured for each version.

(dependencies) · high confidence

Written by watchdog.canine.dev from the codebase's own history, inside the signed delivery this page is composed from.

• CAI 39 → 60 (+21.0)
• Rubric changed (rubric-2026.08.15 → rubric-2026.09.15) — scores are not directly comparable.

• Code Health 98 → 93 (-5.0)
• Architecture 69 → 99 (+30.2)
• Maturity 50 → 48 (-2.5)
• Readiness 30 → 77 (+46.5)
• Security 31 → 58 (+27.1)

• Coverage not measured — test suite did not build
• Dimension evaluation failed
• Duplicated block (5 lines × 2) (algebird-core/src/main/java/com/twitter/algebird/CassandraMurmurHash.java)
• Duplicated block (7 lines × 2) (algebird-core/src/main/java/com/twitter/algebird/CassandraMurmurHash.java)
• Duplicated block (7 lines × 3) (algebird-core/src/main/java/com/twitter/algebird/CassandraMurmurHash.java)
• High: security finding (details withheld)
• High: security finding (details withheld)
• High: security finding (details withheld)
• High: security finding (details withheld)
• High: security finding (details withheld)
• High: security finding (details withheld)
• High: security finding (details withheld)
• High: security finding (details withheld)
• High: security finding (details withheld)
• High: security finding (details withheld)
• High: security finding (details withheld)
• High: security finding (details withheld)
• High: security finding (details withheld)
• High: security finding (details withheld)
• High: security finding (details withheld)
• …and 8 more

• BitSet.compact (cognitive 22) (algebird-core/src/main/scala/com/twitter/algebird/immutable/BitSet.scala)
• BloomFilterMonoid.sumOption (cognitive 18) (algebird-core/src/main/scala/com/twitter/algebird/BloomFilter.scala)
• Branch.& (cognitive 26) (algebird-core/src/main/scala/com/twitter/algebird/immutable/BitSet.scala)
• Branch.-- (cognitive 55) (algebird-core/src/main/scala/com/twitter/algebird/immutable/BitSet.scala)
• Branch.-- (cyclomatic 20) (algebird-core/src/main/scala/com/twitter/algebird/immutable/BitSet.scala)
• Branch.^ (cognitive 29) (algebird-core/src/main/scala/com/twitter/algebird/immutable/BitSet.scala)
• Branch.intersects (cognitive 18) (algebird-core/src/main/scala/com/twitter/algebird/immutable/BitSet.scala)
• Branch.| (cognitive 21) (algebird-core/src/main/scala/com/twitter/algebird/immutable/BitSet.scala)
• Branch.|= (cognitive 18) (algebird-core/src/main/scala/com/twitter/algebird/immutable/BitSet.scala)
• Documentation: no architecture or design documentation (docs/src/main/mdoc/datatypes/first_and_last.md)
• Documentation: no architecture or design documentation (docs/src/main/mdoc/datatypes/min_plus_algebra.md)
• Documentation: no architecture or design documentation (docs/src/main/mdoc/datatypes/reset_state.md)
• Documentation: no installation or build instructions (README.md)
• Documentation: no project overview (README.md)
• Dormant codebase
• Duplicated block (10 lines × 2) (algebird-core/src/main/scala/com/twitter/algebird/BloomFilter.scala)
• Duplicated block (10–11 lines × 2) (algebird-core/src/main/scala/com/twitter/algebird/BloomFilter.scala)
• Duplicated block (21 lines × 2) (algebird-core/src/main/scala/com/twitter/algebird/BloomFilter.scala)
• Duplicated block (22 lines × 2) (algebird-core/src/main/scala/com/twitter/algebird/macros/Cuber.scala)
• Duplicated block (29–30 lines × 2) (algebird-core/src/main/scala/com/twitter/algebird/BloomFilter.scala)
• …and 76 more

• Containers 0 added · 0 removed · contexts 1 added · 0 removed · edges 0 added · 0 removed

• repository

Written by watchdog.canine.dev from the codebase's own history, inside the signed delivery this page is composed from.

twitter/algebird was measured the same way every project in this corpus was: the same rubric, at a pinned commit, with the result published in full. Point a surveyor at a repository you know and see whether you agree with it.