Prefill GetTipsetByHeight skiplist cache on lotus startup #10955
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arajasek
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This was referenced Jun 26, 2023
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Context
The
GetTipsetByHeightmethod internally maintains a skiplist to more efficiently lookup a tipsets at a given height.When users call a RPC method that call this method (for example
eth_getBlockByNumber) then if this skiplist is not already cached then the user needs to wait until this skiplist is populated in the background which can take 10 minutes or longer.Instead, lets just always populate and fully prefill this skiplist in the background as soon as lotus starts up (only when EnableEthRPC is set). This will not fix the issue, but it will be more likely to give better user experience.
Test plan
Compiled and restarted Lotus and observed the skiplist was generated on startup