Tim Beiko: There is a bug with the withdrawal test of Shapella, teams didn't feel like this should affect the timeline for the Sepolia upgrade

02/17 02:10

Ethereum core developer Tim Beiko tweeted that developer MariusVanDerWijden had found a testnet Shapella bug that that showed up during full sync for empty blocks (no txns or withdrawals). Other clients also had this issue, but given it's fairly easy to test for, everyone felt confident they could patch it quickly. Teams didn't feel like this should affect the timeline for the Sepolia upgrade, so we're still on for Feb 28, 4am UTC. Additionally, Barnabas Busa gave an update on the latest withdrawal devnet, whose goal was to stress test Shapella. The devnet had 600k validators, and 360k of them perform withdrawal credential updates right at the fork. Clients saw a spike in RAM + CPU usage, and the devops team will be monitoring the devnet in the coming days to see how many credential update messages were included vs. lost. This test also revealed a Prysm <> Besu issue, where Besu limits the number of responses it sends via RPC to prevent DoS, but Prysm expected a higher number of responses than Besu's current limit. The Besu team is currently looking into this. In addition, the developers are also planning another mainnet shadow fork, on which they will be doing doing some mev-boost testing.

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