Ethereum developer: There is a problem in the withdrawal test of Shapella, but it will not affect the upgrade time of Shapella

According to reports, Tim Beiko, the core developer of Ethereum, tweeted that Marius Van Der Wijden, the developer, found a public test network Shapellabug, which occurred during the full synchronization of empty blocks (no transactions or withdrawals). Several other clients also encountered this problem. However, this problem is easy to test and can be quickly repaired. The team believes that this will not affect the schedule of Sepolia upgrade, which is still planned to be carried out at 12:00 on February 28. In addition, Barnabas Busa updated the latest withdrawal Devnet for the stress test of Shapella. The Devnet has 600000 verifiers, of which 360000 verifiers perform the withdrawal voucher update at the time of bifurcation. The client sees a surge in RAM+CPU usage. The deops team will monitor the development network in the next few days to see how many credential update messages are included and lost. The test also revealed the problem of PrysmBesu, where Besu limited the number of responses it sent through RPC to prevent DoS, but the number of responses Prysm expected was higher than Besu’s current limit. Besu team is currently investigating this matter. In addition, developers also plan to conduct another main network shadow bifurcation, and will do some Mev-Boost tests on it. On February 10, the Ethereum Foundation said that the upgrade of Shanghai+Capella (Shapella) main network was entering the final pre-release sequence – the public test network. Shapella includes many functions, but the most important thing for the pledgor and the consensus layer is to support withdrawal. Withdrawing verifiers can withdraw in full, while active verifiers with a balance of more than 32ETH can withdraw in part. In addition, Sepolia, the first long-term public test network, is scheduled to be upgraded on February 28.

Interpretation of this information:

The Ethereum development team has identified a bug called Shapellabug that occurred during full synchronization of empty blocks. Developers have found the problem to be easy to test and quick to repair, so it is not expected to affect the upcoming Sepolia upgrade on February 28. The team is also conducting stress tests on the withdrawal Devnet, which has revealed RAM+CPU usage surges and issues with the PrysmBesu interaction. The Besu team is investigating these issues, and developers are planning another main network shadow bifurcation with Mev-Boost tests. The Shapella upgrade includes several features such as withdrawal support for pledgers and consensus layers, allowing verifiers to withdraw in full or in part.