Feat: Buffered jsonl writes (draft)

[aaronsteers]

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After some testing, the perf difference from using a buffered writer is not as significant as moving the write operation to a different thread. This change is further inline with the philosophy that writes should try not to block reads.

Still todo:

• [ ] Proper thread hygiene and cleanup.
• [ ] Proper handling of closed files.
• [ ] Tests are hanging as of now, probably because of the above.

Summary by CodeRabbit

• New Features

  • Introduced asynchronous file writing for more efficient handling of JSONL records.
  • Enhanced file handling for writing JSONL files with gzip compression, ensuring better consistency and formatting.

• Bug Fixes

  • Improved robustness of file operations by separating concerns of compression and text encoding, reducing potential encoding issues.

[coderabbitai[bot]]

Walkthrough

Walkthrough

The recent changes enhance the JsonlWriter class in the jsonl.py file by introducing asynchronous file writing capabilities. A new constructor initializes a record queue and a dedicated writing thread, which separates the record preparation from the writing process. The _open_new_file method has been refined to effectively combine gzip compression with text encoding, ensuring robust file operations while maintaining proper encoding and compression.

Changes

File Path	Change Summary
airbyte/_processors/file/jsonl.py	Enhanced JsonlWriter to support asynchronous writing with a new constructor and _write_worker. Refined _open_new_file for gzip and text handling. Updated method signatures for better type safety.

Sequence Diagram(s)

sequenceDiagram
    participant Client
    participant JsonlWriter
    participant RecordQueue
    participant FileWriter

    Client->>JsonlWriter: Initialize writer
    JsonlWriter->>RecordQueue: Create record queue
    JsonlWriter->>FileWriter: Start writing thread
    Note over JsonlWriter: Asynchronous writing in progress
    Client->>JsonlWriter: Queue record for writing
    JsonlWriter->>RecordQueue: Add record to queue
    FileWriter->>FileWriter: Check for new records
    FileWriter->>FileWriter: Write record to file
    FileWriter-->>JsonlWriter: Confirm write complete
    JsonlWriter-->>Client: Record processed

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Recent review details

Configuration used: CodeRabbit UI Review profile: CHILL

Commits

Files that changed from the base of the PR and between cdc7140f273d2dff54398cfb2d1938113558d51b and f4d1f6a532aa64d930e38a7918e5a15e35f2ac49.

Files selected for processing (1)

• airbyte/_processors/file/jsonl.py (3 hunks)

Files skipped from review as they are similar to previous changes (1)

• airbyte/_processors/file/jsonl.py

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