feat(sync orphan_block_pool): cleanup expired blocks in orphan block #2989
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What problem does this PR solve?
cleanup expired blocks in orphan pool periodically, avoid memory leak when long run
Problem Summary:
What is changed and how it works?
periodically cleanup in sync module, and in cleanup procedure, check if blocks with epoch less than
chain tip epcho 6 epochs, remove these blocks and also remove items in header view.
What's Changed:
Related changes
owner/repo
:Check List
Tests
Release note