Solana transaction never gets picked up by the cluster

Question

For the last few weeks or so, we are having the following issue:

Some of our transactions, when sent via sendRawTransaction() never get picked up by the network (if we look up the txid in the explorer, it's never there), and yet web3js doesn't error out.

We use "@solana/web3.js": "^1.44.1"

This has started happening to us like 2-3 weeks ago:

This issue affects some sets of transactions that all share the same instructions + amount of signers and accounts.
It repros 100% of the time for all transactions in those sets. No matter the state of the network or how many times we retry, they never get picked up.
We don't get any error back from web3.js, such as transaction limit hit
They all work in devnet, but not in mainnet!

For one of these tx, I removed one instruction+signer and it started working, so I imagine there's some limit we're hitting, but I can't tell which or how to even determine the limit.

score 1 · Answer 1 · answered Jun 28 '22 at 10:01

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When network congestion is high, validators can drop transactions without any error. To fix your issue you could send more of the same transaction on some interval while you're waiting for confirmation, and while your transaction blockhash is valid. This way you'll raise a chances for your transaction to been processed by the validator.

answered Jun 28 '22 at 10:01

Dejan Ignjatovic

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More information about retrying transactions at https://solanacookbook.com/guides/retrying-transactions.html#facts – Jon C Jun 28 '22 at 23:50
Unfortunately, this is not the issue. I retry transactions following that policy already. There is some other condition that must be causing txs from being dropped silently, and that for some reason affects mainnet but not devnet – Alfonso Gomez Jordana Manas Jul 01 '22 at 07:54
maybe it's RPC node you use? – Dejan Ignjatovic Jul 01 '22 at 13:34
Also there is a limit for TX size which is defined by the UDP packet size. It was around 1280 bytes if i remember well... – Dejan Ignjatovic Jul 01 '22 at 13:43

Solana transaction never gets picked up by the cluster

1 Answers1