ESQL: Add distribution strategy for external sources#143194
Merged
costin merged 1 commit intoelastic:mainfrom Feb 27, 2026
Merged
ESQL: Add distribution strategy for external sources#143194costin merged 1 commit intoelastic:mainfrom
costin merged 1 commit intoelastic:mainfrom
Conversation
costin
added
>enhancement
Team:Analytics
Collaborator
|
Pinging @elastic/es-analytical-engine (Team:Analytics) |
Collaborator
|
Hi @costin, I've created a changelog YAML for you. |
6 tasks
Introduce a pluggable strategy pattern for deciding whether external source queries should be distributed across data nodes or kept on the coordinator. Until data node dispatch is implemented (PR5), all plans collapse back to coordinator-only execution. - ExternalDistributionStrategy, ExternalDistributionContext, ExternalDistributionPlan, NodeEligibilityStrategy: core interfaces - CoordinatorOnlyStrategy, RoundRobinStrategy, AdaptiveStrategy: concrete implementations with shared round-robin assignment logic - Mapper: insert ExchangeExec above ExternalSourceExec for pipeline breakers - ComputeService: resolve strategy from external_distribution pragma, apply strategy, collapse exchanges until PR5 - QueryPragmas: add external_distribution setting - Formatting fixes from spotlessApply across datasource files Developed using AI-assisted tooling
costin
force-pushed
the
esql/ds-distributed/stage-4
branch
from
b1d9b64 to
3cb02dc
Compare
bpintea
approved these changes
Feb 27, 2026
Contributor
bpintea
left a comment
bpintea
left a comment
There was a problem hiding this comment.
LGTM.
🤖 Reviewed AI-assisted.
PeteGillinElastic
pushed a commit
to PeteGillinElastic/elasticsearch
that referenced
this pull request
Feb 27, 2026
Add a pluggable distribution strategy for external source queries, enabling future distributed execution across data nodes. - ExternalDistributionStrategy, ExternalDistributionContext, ExternalDistributionPlan, NodeEligibilityStrategy: core interfaces for deciding how external source splits should be distributed - CoordinatorOnlyStrategy, RoundRobinStrategy, AdaptiveStrategy: concrete implementations with shared round-robin assignment logic - Mapper: insert ExchangeExec above ExternalSourceExec when pipeline breakers are present, mirroring FragmentExec handling - ComputeService: resolve strategy from `external_distribution` pragma, apply strategy; always collapse exchanges to coordinator-only until data node dispatch is implemented (PR5) - QueryPragmas: add `external_distribution` setting (adaptive/coordinator_only/round_robin) Relates elastic#142996 Developed using AI-assisted tooling
szybia
added a commit
to szybia/elasticsearch
that referenced
this pull request
Feb 27, 2026
…cations * upstream/main: (35 commits) Create ARM bulk sqrI8 implementation (elastic#142461) Rework get-snapshots predicates (elastic#143161) Refactor downsampling fetchers and producers (elastic#140357) ESQL: Unmute test and add extra logging to generative test validation (elastic#143168) Fix metadata fields being nullified/loaded by unmapped_fields setting (elastic#143155) Determine remote cluster version (elastic#142494) Populate failure message for aborted clones (elastic#143206) Allow kibana_system role to read and manage logs streams (elastic#143053) Mute org.elasticsearch.xpack.esql.CsvIT test {csv-spec:eval.DocsLength} elastic#143224 Mute org.elasticsearch.xpack.esql.CsvIT test {csv-spec:eval.DocsByteLength} elastic#143223 Mute org.elasticsearch.xpack.esql.CsvIT test {csv-spec:docs.DocsBitLength} elastic#143222 Fix FloatVectorScorerSupplier bulkScore bug (elastic#143211) ESQL: Add data node execution for external sources (elastic#143209) [ESQL] Cleanup commands docs (elastic#143058) [ML]Fix latest transforms disregarding updates when sort and sync fields are non-monotonic (elastic#142856) Mute org.elasticsearch.index.mapper.IpFieldMapperTests testSyntheticSourceInObject elastic#143212 Tests: Fix StoreDirectoryMetricsIT (elastic#143084) ESQL: Add distribution strategy for external sources (elastic#143194) CSV IT spec (elastic#142585) Fix VectorScorerOSQBenchmark.score to read corrections properly (elastic#143137) ...
tballison
pushed a commit
to tballison/elasticsearch
that referenced
this pull request
Mar 3, 2026
Add a pluggable distribution strategy for external source queries, enabling future distributed execution across data nodes. - ExternalDistributionStrategy, ExternalDistributionContext, ExternalDistributionPlan, NodeEligibilityStrategy: core interfaces for deciding how external source splits should be distributed - CoordinatorOnlyStrategy, RoundRobinStrategy, AdaptiveStrategy: concrete implementations with shared round-robin assignment logic - Mapper: insert ExchangeExec above ExternalSourceExec when pipeline breakers are present, mirroring FragmentExec handling - ComputeService: resolve strategy from `external_distribution` pragma, apply strategy; always collapse exchanges to coordinator-only until data node dispatch is implemented (PR5) - QueryPragmas: add `external_distribution` setting (adaptive/coordinator_only/round_robin) Relates elastic#142996 Developed using AI-assisted tooling
This file contains hidden or bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment
3 participants
Add this suggestion to a batch that can be applied as a single commit.This suggestion is invalid because no changes were made to the code.Suggestions cannot be applied while the pull request is closed.Suggestions cannot be applied while viewing a subset of changes.Only one suggestion per line can be applied in a batch.Add this suggestion to a batch that can be applied as a single commit.Applying suggestions on deleted lines is not supported.You must change the existing code in this line in order to create a valid suggestion.Outdated suggestions cannot be applied.This suggestion has been applied or marked resolved.Suggestions cannot be applied from pending reviews.Suggestions cannot be applied on multi-line comments.Suggestions cannot be applied while the pull request is queued to merge.Suggestion cannot be applied right now. Please check back later.
Add a pluggable distribution strategy for external source queries,
enabling future distributed execution across data nodes.
ExternalDistributionPlan, NodeEligibilityStrategy: core interfaces
for deciding how external source splits should be distributed
concrete implementations with shared round-robin assignment logic
breakers are present, mirroring FragmentExec handling
external_distributionpragma,apply strategy; always collapse exchanges to coordinator-only until
data node dispatch is implemented (PR5)
external_distributionsetting (adaptive/coordinator_only/round_robin)Relates #142996
Developed using AI-assisted tooling