This PR introduces several enhancements and fixes to the read cache mechanism, particularly focusing on handling corrupted files and optimizing read cache memory usage. The changes aim to improve the reliability and efficiency of read operations under various conditions, including low read cache memory scenarios and when encountering corrupted file segments.
Changes
Test for Reading Corrupted Files (133f7187): Added a test to verify that files with corrupted segments can still be read multiple times, despite initial failures that fill the read cache. This ensures that the read cache can release part of its memory over time, allowing continued read operations.
Test for Low Read Cache Size Percentage (4a954e14): Introduced a test to confirm that the client does not freeze or fail read operations due to low read cache memory relative to the system's total memory. This test ensures the client's resilience in low-memory conditions.
Fix for Read Cache Recovery on Failure (2fb805ea): Addressed an issue where read operations that failed due to insufficient read cache memory did not properly trigger a retry process. Previously, retries continued until reaching the maximum limit without effectively releasing memory. This fix ensures that read requests can complete successfully after memory is freed.
Improvements to Read Cache Configuration (5f972100, b37a26e1): Implemented enhancements to the read cache configuration, including clearer references to the read cache max size percentage in documentation and help text, and correcting the read cache max size option to represent memory size limits dynamically based on system memory capabilities.
Impact
These changes significantly improve the system's ability to handle read operations under adverse conditions, such as when dealing with corrupted files or when operating with limited read cache memory. By ensuring that the read cache can efficiently manage and recover from failures, these updates enhance the overall stability and performance of the system.
Testing
Comprehensive tests have been added to cover the new functionality and fixes, ensuring that the system behaves as expected in scenarios involving corrupted files and low read cache memory. These tests validate the robustness of the read cache mechanism and its ability to adapt to different system conditions.
Documentation
Updates to the documentation and help text have been made to reflect the changes in read cache configuration options, providing clearer guidance for users on how to optimize read cache settings for their specific system configurations.
Summary
This PR introduces several enhancements and fixes to the read cache mechanism, particularly focusing on handling corrupted files and optimizing read cache memory usage. The changes aim to improve the reliability and efficiency of read operations under various conditions, including low read cache memory scenarios and when encountering corrupted file segments.
Changes
Test for Reading Corrupted Files (
133f7187): Added a test to verify that files with corrupted segments can still be read multiple times, despite initial failures that fill the read cache. This ensures that the read cache can release part of its memory over time, allowing continued read operations.Test for Low Read Cache Size Percentage (
4a954e14): Introduced a test to confirm that the client does not freeze or fail read operations due to low read cache memory relative to the system's total memory. This test ensures the client's resilience in low-memory conditions.Fix for Read Cache Recovery on Failure (
2fb805ea): Addressed an issue where read operations that failed due to insufficient read cache memory did not properly trigger a retry process. Previously, retries continued until reaching the maximum limit without effectively releasing memory. This fix ensures that read requests can complete successfully after memory is freed.Improvements to Read Cache Configuration (
5f972100,b37a26e1): Implemented enhancements to the read cache configuration, including clearer references to the read cache max size percentage in documentation and help text, and correcting the read cache max size option to represent memory size limits dynamically based on system memory capabilities.Impact
These changes significantly improve the system's ability to handle read operations under adverse conditions, such as when dealing with corrupted files or when operating with limited read cache memory. By ensuring that the read cache can efficiently manage and recover from failures, these updates enhance the overall stability and performance of the system.
Testing
Comprehensive tests have been added to cover the new functionality and fixes, ensuring that the system behaves as expected in scenarios involving corrupted files and low read cache memory. These tests validate the robustness of the read cache mechanism and its ability to adapt to different system conditions.
Documentation
Updates to the documentation and help text have been made to reflect the changes in read cache configuration options, providing clearer guidance for users on how to optimize read cache settings for their specific system configurations.