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| }) | ||
| .collect(); | ||
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| let responses = try_join_all(lambda_tasks).await?; |
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| Self { | ||
| memory_mb, | ||
| fast_field_cache_capacity, | ||
| split_footer_cache_capacity, |
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| /// Create a Lambda-optimized searcher config based on the allocated memory. | ||
| pub fn for_memory(memory_mb: usize) -> Self { | ||
| // Allocate roughly 1/4 of memory to fast field cache | ||
| let fast_field_cache_capacity = ByteSize::mb((memory_mb / 4) as u64); |
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| mv quickwit-aws-lambda-${{ env.ASSET_VERSION }}-aarch64.zip ../../../../ | ||
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| - name: Upload to GitHub release | ||
| uses: quickwit-inc/upload-to-github-release@v1 |
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Key Technical Components
1. ExecutionMode enum in protobuf - Added GRPC and REMOTE_FUNCTION variants to
SearchRequest
2. RemoteFunctionInvoker trait - Cloud-agnostic interface for function invocation
3. AwsLambdaInvoker - AWS Lambda implementation using the Lambda SDK
4. LambdaConfig - Configuration (enabled, function_name,
max_splits_per_invocation, etc.)
Files Modified
File: quickwit-search/src/root.rs
Changes: Lambda routing logic in search_partial_hits_phase(), added
execute_leaf_search_via_lambda() function
────────────────────────────────────────
File: quickwit-search/src/service.rs
Changes: Added lambda_invoker field to SearchServiceImpl
────────────────────────────────────────
File: quickwit-search/src/lib.rs
Changes: Updated start_searcher_service to accept lambda_invoker
────────────────────────────────────────
File: quickwit-serve/src/lib.rs
Changes: Initialize AwsLambdaInvoker when Lambda is enabled
────────────────────────────────────────
File: quickwit-serve/Cargo.toml
Changes: Added quickwit-lambda dependency
────────────────────────────────────────
File: quickwit-lambda/*
Changes: New crate with invoker, handler, and config
Architecture
- Lambda routing logic placed in search_partial_hits_phase() function
- Split batching for Lambda invocations based on max_splits_per_invocation
- Lambda invoker passed through: root_search → root_search_aux →
search_partial_hits_phase_with_scroll → search_partial_hits_phase
- Base64-encoded protobuf payloads for Lambda communication
Lambda Configuration
The Lambda feature is configured in the searcher section of your Quickwit node
config:
searcher:
lambda:
# Enable Lambda execution mode for leaf search
enabled: true
# AWS Lambda function name or ARN (required when enabled)
function_name: "quickwit-leaf-search"
# Optional function qualifier (alias or version)
function_qualifier: "prod" # optional
# Maximum number of splits per Lambda invocation (default: 10)
max_splits_per_invocation: 10
# Timeout for Lambda invocations in seconds (default: 60)
invocation_timeout_secs: 60
# Maximum number of concurrent Lambda invocations (default: 100)
max_concurrent_invocations: 100
Triggering Lambda Mode
To use Lambda for a search request, set execution_mode to REMOTE_FUNCTION in the
SearchRequest protobuf, or use the appropriate query parameter/header in the REST
API.
Lambda Handler
The Lambda function should be built from the quickwit-lambda crate's leaf_search
binary, which:
- Receives base64-encoded protobuf LeafSearchRequest
- Returns base64-encoded protobuf LeafSearchResponse
- Auto-configures cache sizes based on Lambda memory allocation
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