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Flux release notes Important changes and and what's new in each version of Flux. 102
v2_0_ref
parent name
Release notes Flux
/v2.0/reference/flux/release-notes

{{% note %}} The latest release of InfluxDB v2.0 alpha includes Flux v0.40.2. Though newer versions of Flux may be available, they will not be included with InfluxDB until the next InfluxDB v2.0 release. {{% /note %}}

v0.40.2 [2019-08-22]

Bug fixes

  • Resolved holtWinters() panic.

v0.40.1 [2019-08-21]

Bug fixes

  • Use non-pointer receiver for interpreter.function.

v0.40.0 [2019-08-20]

Breaking changes

  • Update compiler package to use true scope.
  • Add http and json to prelude.

Features

  • Add alerts.check() function.
  • Add alerts.notify function.
  • Add kaufmansER() and kaufmansAMA() functions.
  • Add experimental.to() function.
  • Add experimental.set() function to update entire object.
  • Add experimental.objectKeys() function.
  • Add tripleExponentialDerivative() function.
  • Add json.encode() function.
  • Add mqtt.to() function.
  • Add Bytes type.
  • Update compiler package to use true scope.
  • Add http endpoint.
  • Add post method implementation.
  • String interpolation.

Bug fixes

  • Avoid wrapping table errors in the CSV encoder.
  • Remove irrelevant TODOs.
  • mode() now properly considers nulls when calculating the mode.
  • Add http and json to prelude.
  • Rename all Flux test files to use _test.flux.

v0.39.0 [2019-08-13]

{{% warn %}} In Flux 0.39.0, holtWinters() can cause the query engine to panic. Flux 0.40.2 resolves this panic. {{% /warn %}}

Breaking changes

  • Implement the scanning components for string expressions.

Features

  • Add tail() function.
  • Add framework for http.post() function.
  • Implement deadman() function.
  • Time arithmetic functions.
  • Alerts package.
  • Add an experimental group() function with mode extend.
  • Implement the scanning components for string expressions.
  • Add chandeMomentumOscillator() function.
  • Add hourSelection() function.
  • Add date.year() function

Bug fixes

  • Update object to use Invalid type instead of nil monotypes.
  • Make it so the alerts package can be defined in pure Flux.
  • Close connection after sql.to().

v0.38.0 [2019-08-06]

Features

  • Update selectors to operate on time columns.
  • Add relativeStrengthIndex() transformation.
  • Add double and triple exponential average transformations (doubleEMA() and tripleEMA()).
  • Add holtWinters() transformation.
  • Add keepFirst parameter to difference().
  • DatePart equivalent functions.
  • Add runtime package.
  • Add and subtract duration literal arithmetic.
  • Allow keep() to run regardless of nonexistent columns. If all columns given are nonexistent, keep() returns an empty table.
  • Scanner returns positioning.

Bug fixes

  • Function resolver now keeps track of local assignments that may be evaluated at runtime.
  • Fixed InfluxDB test errors.
  • Add range to tests to pass in InfluxDB.
  • Allow converting a duration to a duration.
  • Catch integer overflow and underflow for literals.

v0.37.2 [2019-07-24]

  • General cleanup of internal code.

v0.37.1 [2019-07-23]

Bug fixes

  • Fixed InfluxDB test errors.
  • Add range to tests to pass in InfluxDB.

v0.37.0 [2019-07-22]

Features

  • Add PromQL to Flux transpiler and Flux helper functions.
  • Add mutable arrow array builders.
  • Created date package.
  • Return query and result errors in the multi result encoder.
  • Add exponentialMovingAverage().
  • Add full draft of Rust parser.
  • Implement more production rules.
  • AST marshalling.
  • Parse statements.
  • Parse integer and float literals.
  • Add initial Rust implementation of parser.

v0.36.2 [2019-07-12]

Bug fixes

  • Add helper methods for comparing entire result sets.
  • Map will not panic when a record is null.

v0.36.1 [2019-07-10]

Bug fixes

  • Add range call to some end-to-end tests.
  • Fix implementation of strings.replaceAll.

v0.36.0 [2019-07-09]

Features

  • Updated movingAverage() and added timedMovingAverage.
  • elapsed() function.
  • mode() function.
  • sleep() function.
  • Modify error usage in places to use the new enriched errors.
  • Enriched error interface.
  • End-to-end tests that show how to mimic pandas functionality.
  • End-to-end tests for string functions.

Bug fixes

  • Fix difference() so that it returns an error instead of panicking when given a _time column.
  • Added end-to-end tests for type conversion functions.
  • Make map() error if return type is not an object.
  • Fixed miscounted allocations in the ColListTableBuilder.
  • Support formatting with.

Breaking changes

  • Updated movingAverage() to timedMovingAverage and added new movingAverage() implementation.

v0.35.1 [2019-07-03]

Bug fixes

  • Re-add mergeKey parameter to map() in deprecated state.

v0.35.0 [2019-07-02]

Breaking changes

  • Remove mergeKey parameter from the map() function.

Features

  • Add sql.to() function.
  • Add movingAverage() function.
  • Add strlen() and substring() functions to the strings package.

Bug fixes

  • Remove mergeKey parameter from the map() function.
  • Parse float types with PostgreSQL.

v0.34.2 [2019-06-27]

Bug fixes

  • Parse float types with PostgreSQL.

v0.34.1 [2019-06-26]

Features

  • Add custom PostgreSQL type support.
  • Added MySQL type support.
  • Nulls work in table and row functions.

Bug fixes

  • Fixed boolean literal type conversion problem and added tests.
  • Diff should track memory allocations when it copies the table.
  • Copy table will report if it is empty correctly.

v0.33.2 [2019-06-25]

Bug fixes

  • Use strings.Replace instead of strings.ReplaceAll for compatibility.

v0.33.1 [2019-06-20]

Bug fixes

  • Copy table will report if it is empty correctly.

v0.33.0 [2019-06-18]

Breaking changes

  • Implement nulls in the compiler runtime.

Features

  • Add Go regexp functions to Flux.
  • Add the exists operator to the compiler runtime.
  • Implement nulls in the compiler runtime.
  • Add nullable kind.
  • Support "with" syntax for objects in row functions.
  • Port several string functions from go strings library to Flux.
  • Add exists unary operator.

Bug fixes

  • Add range to map_extension_with.flux.
  • Row function resets records map with each call to prepare.
  • Fix joinStr, including adding an EndToEnd Test.
  • Fix string_trimLeft and string_trimRight so that they pass in InfluxDB.
  • Add length check for empty tables in fill.

v0.32.1 [2019-06-10]

Bug fixes

  • Identify memory limit exceeded errors in dispatcher.

v0.32.0 [2019-06-05]

Breaking changes

  • Remove the control package.

Bug fixes

  • Changelog generator now handles merge commits better.
  • Return count of errors when checking AST.

v0.31.1 [2019-05-29]

Bug fixes

  • Do not call done after calling the function.

v0.31.0 [2019-05-28]

Breaking changes

  • Copy the table when a table is used multiple times.

Features

  • Support for dynamic queries.

Bug fixes

  • Copy the table when a table is used multiple times.

v0.30.0 [2019-05-16]

Features

  • Support for dynamic queries.

v0.29.0 [2019-05-15]

Breaking changes

  • Make on a required parameter to join().

Features

Bug fixes

  • Properly use RefCount to reference count tables.
  • Remove the race condition within the (*Query).Done method.
  • Fix table functions test.
  • Add column parameter to median().
  • Modify median to work with aggregateWindow().
  • pivot() now uses the correct column type when filling nulls.
  • Add error handling for property list.
  • Return the error from the context in the executor.

v0.28.3 [2019-05-01]

Bug fixes

  • Fix request results labels to count runtime errors.
  • An error when joining could result in two calls to finish.

v0.28.2 [2019-04-26]

Bug fixes

  • Preallocate data when constructing a new string array.

v0.28.1 [2019-04-25]

Bug fixes

  • Make executor respect memory limit from caller.

v0.28.0 [2019-04-24]

Features

  • Allow choosing sample/population mode in stddev().

Bug fixes

  • Fix reduce() so it resets the reduce value to the neutral element value for each new group key and reports an error when two reducers write to the same destination group key.

v0.27.0 [2019-04-22]

Features

  • Add trimSuffix and trimPrefix functions to the strings package.
  • Add support for conditional expressions to compiler.
  • Add conditional expression handling to interpreter.

Bug fixes

  • Enforce memory and concurrency limits in controller.
  • Format conditional expression.
  • tagKeys should include a call to distinct.

v0.26.0 [2019-04-18]

Breaking changes

  • Aggregates now accept only a column parameter. columns not used.

Features

  • Add handling for conditional expressions to type inference.
  • Add if/then/else syntax to Flux parser.
  • Added a WalkIR function that external programs can use to traverse an opSpec structure.
  • Add planner options to compile options.
  • Add example on how to use Flux as a library.
  • duplicate() will now overwrite a column if the as label already exists.

Bug fixes

  • Format right child with good parentheses.
  • Make staticcheck pass.
  • Rename json tag so go vet passes.
  • The controller pump could reference a nil pointer.
  • Create a DependenciesAwareProgram so controller can assign dependencies.
  • Make Program.Start start execution synchronously.
  • Read the metadata channel in a separate goroutine.
  • Remove dead code in controller so staticcheck passes.
  • Allow Flux unit tests to pass.
  • Require a Github token to perform a release.
  • Change example name to make go vet pass.
  • Make csv.from return decode error.

v0.25.0 [2019-04-08]

Breaking changes

  • Fix logical operators (and, or) precedence.

Bug fixes

  • Omit space between unary operator and operand.
  • Format AST preserving operator precedence.

v0.24.0 [2019-04-01]

Breaking changes

  • Rename percentile() function to quantile().

Bug fixes

  • Handle when a non-call expression is parsed as the pipe destination.
  • Add error message to Compile methods for empty Spec.

v0.23.0 [2019-03-26]

Breaking changes

  • Remove unused statistics from the struct.

Features

  • Define comparison operators between time types.
  • Parse signed duration.
  • Added reduce() function and supporting go API for implementation.
  • Fix for recognizing locally scoped objects and arrays in a row function.

Bug fixes

  • Columns in percentile signature and more strict param checking.
  • Report the error received when parsing a bad regex literal.
  • Remove unused statistics from the struct.

v0.22.0 [2019-03-18]

Features

  • Added a math package and ported all 64 bit go math library functions.

Bug fixes

  • Make read-like access patterns for objects thread-safe.

v0.21.4 [2019-03-06]

Bug fixes

  • Test union.flux correctly uses sort.
  • Pivot orders rowKey and columnKey by the input parameters, rather than the table column order.
  • Deterministic sorting of input tables in join.
  • Group key comparison works regardless of column ordering.

v0.21.3 [2019-03-05]

Bug fixes

  • Fix test to pass in InfluxDB.
  • Write table and result name in each row of CSV output.
  • Make time() function accept any format that parser accepts.
  • Return errors when evaluating functions.
  • Prevent a deadlock in the array expression parser.

v0.21.2 [2019-03-01]

Bug fixes

  • Add AST compiler to mappings.

v0.21.1 [2019-03-01]

Bug fixes

  • Make ASTCompiler marshalable.
  • Fix a controller test to be less flaky.
  • from() must send deep table copies to its downstream transformations.

v0.21.0 [2019-02-25]

Breaking changes

  • Support attaching arbitrary query metadata from the executor.

Features

  • Support attaching arbitrary query metadata from the executor.
  • Socket source.

Bug fixes

  • Add locks to make diff threadsafe.

v0.20.0 [2019-02-20]

Features

  • AST match.
  • Generate ASTs from Flux test files for external consumption.
  • Add compile subcommand that compiles Flux to spec.

Bug fixes

  • Change loadStorage and loadMem to be options so that they are modifiable.
  • Generate skipped tests; skip in test driver.

v0.19.0 [2019-02-11]

Breaking changes

  • Make window() parameters match SPEC.
  • Split FromProcedureSpec into logical and physical specs.

Features

  • Add contains() function to check for membership in lists.
  • test keyword.

Bug fixes

  • Raw query test case.

v0.18.0 [2019-02-07]

Features

  • Add strings package with functions to trim/change string case.
  • Make duration conversion public.
  • Add assertEmpty method and use it with testing.test.
  • Expose literal parsers used within the parser.
  • Add testing.diff function.
  • Execute command.

Bug fixes

  • Refactor the controller to remove data races.
  • Member expressions using a string literal use the incorrect end bracket.
  • Skip lambda evaluation when referencing nulls.
  • Options editor should use ast.Expression.
  • Fix decoder bug where a default table ID is given when none is required.
  • Add close to SourceIterator.

v0.17.0 [2019-01-22]

Features

  • Checks for option dependencies.
  • Add query success and error metrics.
  • Track nested blocks in the parser.
  • Update aggregateWindow() to include createEmpty as parameter to allow for null results.
  • Add query function count metrics.

Bug fixes

  • Multiplicative operators are above additive operators in precedence.
  • Fix panic when copying lambda.
  • Only print a package's public exports.
  • Cannot access imports of imports.
  • Check for schema collision when appending columns to a table.
  • Process test helper had bad logic to check for errors.
  • Handle rune errors correctly when decoding an illegal token.

v0.16.1 [2019-01-17]

Bug fixes

  • Copy packages for importer copy.

##v0.16.0 [2019-01-17]

Features

  • Adds various v1 meta queries helper functions

Bug fixes

  • Fixes various UX issues.
  • Object polytype.
  • Fix edge case panic in assertEquals.
  • Check for equality in time columns correctly.
  • Fix bug where assertEquals did not check tables without a match in both streams.
  • Clear return for each REPL command.

v0.15.0 [2019-01-16]

Features

  • Add rule to remove filter true nodes.
  • Checks for variable reassignment and option declarations below package block.

Bug fixes

  • Move a test file into the testing/testdata folder.

v0.14.0 [2019-01-14]

Breaking changes

  • Implement and require builtin statements.
  • Fix keys to output group key.
  • Organizes builtin code into Flux packages.
  • Change flux command to be a REPL.

Features

  • Implement and require builtin statements.
  • Added a new utility library for generating test data.
  • columns() function.
  • Add fill function to set a default value for null values in a column.
  • Organizes built-in code into Flux packages.
  • Change flux command to be a REPL.
  • Refactored the table builder interfaces to support null value creation.
  • Aggregates process empty/all-null tables by creating a null row.
  • Show nulls in REPL as empty string.
  • Add ability to define built-in packages.
  • Treat omitted values with no defaults as nil in CSV.
  • Build arrow columns with null values.
  • Converting limit to use arrow arrays.
  • TableBuilder interface and ColListTableBuilder implementation support creation of nil values.

Bug fixes

  • Count nulls in the count aggregate.
  • Fix keys to output group key.
  • Adding test for type mismatch in group.
  • Nest extern blocks for each level in scope.
  • Memory leak in limit when slicing.
  • Prettier formatting for package.
  • Change Package.Path to be json omitempty.

v0.13.0 [2019-01-07]

Breaking changes

  • Add File and Package nodes to the AST.

Features

  • Embed errors into the ast from the parser.
  • Add no-points optimization for from() |> keys().
  • Add File and Package nodes to the AST.
  • Add a function for checking for errors within the AST.

Bug fixes

  • Remove unneeded use of memory allocator.
  • Allow the memory allocator to be nil for arrow arrays.
  • Fix several bugs in copy methods add tests.
  • Fix a flaky test in the controller shutdown.

v0.12.0 [2019-01-02]

Features

  • Slice utils.
  • Parse string literal object keys.
  • Add tests for multi-line and escaped strings.
  • Arrow helper method.
  • Converting all aggregates to use arrow arrays.

Bug fixes

  • Embed plan.DefaultCost in input and output functions.
  • Side effect statements are now copied between related interpreter scopes.

v0.11.0 [2018-12-18]

Features

  • Add utility methods for converting a slice into an arrow array buffer.

Bug fixes

  • Do not panic with unbalanced parenthesis.
  • Respect positive timeout for toHTTP.

v0.10.0 [2018-12-17]

Breaking changes

  • Change "label" to "column" for state tracking functions.

Features

  • Plan validation.
  • Testing framework no longer checks output.
  • Integrate arrow arrays into the table builder.
  • Support packages and imports.

Bug fixes

  • Cancel all queries after timeout elapses.
  • makefile for generating the scanner after clean was incorrect.

v0.9.0 [2018-12-11]

Features

  • Option Editor.

Bug fixes

  • Return the source attribute in the location correctly.

v0.8.0 [2018-12-11]

Features

  • Rule to chain group operations.
  • Add package and import support to the semantic graph.
  • Add assertEquals function to transformations.
  • Parse import and package statements
  • Walk pattern for AST.
  • AST formatting.
  • Switch over to the new parser.

Bug fixes

  • Make controller return planner failures.
  • Collision between external and fresh type vars.
  • fmt for import and package.
  • Add import/package nodes to ast.Walk.
  • Improve panic message when the wrong column type is used.
  • Check nil results when computing stats.
  • Suppress group push down for _time and _value.
  • Terminal output functions must produce results.
  • Fix race in interpreter.doCall.
  • Fix ast.Walk for Assignemnt rename.
  • Improve error message for missing object properties.
  • Add unary logical expression to the parser.
  • Variable declarator node needs to duplicate the location information.

v0.7.4 (2018-12-04)

Bug Fixes

  • Add missing comparison operators.

v0.7.3 (2018-12-04)

Bug Fixes

  • Fix the ident statement to use expression suffix.