[fix] (mem tracker) Refactor memtable mem tracker, fix flush memtable DCHECK failed #10156
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dataroaring
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@dataroaring fix be ut, PTAL~ |
morningman
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… DCHECK failed (apache#10156) 1. Added memory leak detection for `DeltaWriter` and `MemTable` mem tracker 2. Modify memtable mem tracker to virtual to avoid frequent recursive consumption of parent tracker. 3. Disable memtable flush thread attach memtable tracker, ensure that memtable mem tracker is completely accurate. 4. Modify `memory_verbose_track=false`. At present, there is a performance problem in the frequent switch thread mem tracker. - Because the mem tracker exists as a shared_ptr in the thread local. Each time it is switched, the atomic variable use_count in the shared_ptr of the current tracker will be -1, and the tracker to be replaced use_count +1, multi-threading Frequent changes to the same tracker shared_ptr are slow. - TODO: 1. Reduce unnecessary thread mem tracker switch, 2. Consider using raw pointers for mem tracker in thread local.
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Proposed changes
Issue Number: close #10154
Problem Summary:
Added memory leak detection for
DeltaWriterandMemTablemem trackerModify memtable mem tracker to virtual to avoid frequent recursive consumption of parent tracker.
Disable memtable flush thread attach memtable tracker, ensure that memtable mem tracker is completely accurate.
Modify
memory_verbose_track=false. At present, there is a performance problem in the frequent switch thread mem tracker.Because the mem tracker exists as a shared_ptr in the thread local. Each time it is switched, the atomic variable use_count in the shared_ptr of the current tracker will be -1, and the tracker to be replaced use_count +1, multi-threading Frequent changes to the same tracker shared_ptr are slow.Checklist(Required)
Further comments
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