In order to add common code to the value deleter of LRU cache, let all lru cache values inherit from LRUCacheValueBase class and tracking memory in destructor.
This PR optimizes some of the logic related to group commit:
1. Improved the error handling when there is insufficient WAL space during import.
2. Accounted for cases where the content length is negative during import.
3. Added missing error log printing in `group_commit_mgr.cpp`.
* When using stream processing frameworks like Flink with group commit mode enabled, the uncertain size of imported data makes such behavior prohibitive. Previously, to simplify the process, the error message for excessive data volume during streamload was combined with the one for group commit mode, leading to confusion for users when encountering errors indicating the data volume is too large during Flink imports. To address this issue, we are adjusting the logic: if a user employs stream processing imports like Flink with group commit mode enabled, we will automatically disable group commit mode, switching to the standard import mode instead. This is the essence of this PR.
Remove LRUCacheValueBase, put last_visit_time into LRUHandle, and automatically update timestamp to last_visit_time during cache insert and lookup.
Do not rely on external modification of last_visit_time, which is often forgotten.
* (feature)(cloud) Use dynamic allocator instead of static buffer pool for better elasticity. (#28983)
* [fix](outfile) Fix unable to export empty data (#30703)
Issue Number: close#30600
Fix unable to export empty data to hdfs / S3, this behavior is inconsistent with version 1.2.7,
version 1.2.7 can export empty data to hdfs/ S3, and there will be exported files on S3/HDFS.
* [fix](file-writer) avoid empty file for segment writer (#31169)
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Co-authored-by: AlexYue <yj976240184@gmail.com>
Co-authored-by: zxealous <zhouchangyue@baidu.com>
The following cases are unstable.
1. LoadStreamMgrTest
2. TaskWorkerPoolTest.PriorTaskWorkerPool
Rationales
1. LoadStreamMgrTest
It is related to timeout. If we investigate the examples in BRPC, we will find the timeout is usually set to 0 rather than a specific number.
2. TaskWorkerPoolTest.PriorTaskWorkerPool
The order of the threads for the lock contentions is undetermined.
