etlantic-polars
Polars dataframe plugin and Polars portable transform compiler for
ETLantic 0.43. Install when
you select Profile(dataframe_engine="polars") or need portable DTCS
compilation on Polars. Keep the pin matched to core.
Note: This plugin and ETLantic core use Beta classifiers for documented single-tenant pilots. Classifiers are not an enterprise SLA.
Install
pip install 'etlantic-polars==0.50.1'
# Optional Arrow interchange:
pip install 'etlantic-polars[arrow]==0.50.1'
# pip install 'etlantic==0.50.1'
Dataframe plugin
Supports eager DataFrame execution and LazyFrame preservation until an
explicit collection boundary declared in the PipelinePlan.
Entry point: etlantic.dataframe_plugins → etlantic_polars:create_plugin.
Portable transform compiler
Claims dtcs:profile/portable-relational-kernel/1 and
dtcs:profile/portable-relational/1. Executes kernel actions plus join, union,
aggregate, sort, distinct, deduplicate, and limit without a native
@implementation("polars").
This is the recommended transformation path and remains eligible for adaptive
execution; a native Polars body pins its step to Polars.
from etlantic import Profile
from etlantic_polars import create_transform_compiler
Profile(
name="polars-portable",
dataframe_engine="polars",
portable_transform_policy="require", # or prefer / native
)
compiler = create_transform_compiler()
print(compiler.info.name, sorted(compiler.info.capabilities.profiles))
Entry point: etlantic.transform_compilers →
etlantic_polars:create_transform_compiler.
Runnable example: examples/portable_polars_kernel.py in the ETLantic repo.
Window V1, complex-type/value, and conversion profiles are available in the current compiler; explicit window frames and Window V2 remain capability-gated. See the compiler protocol and compatibility matrix.
Links
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