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Published 20 hours ago • verified publisher icon spesmilo

electrumx crash when bitcoind is restarted + log spamming on INFO and ERROR levels

Open github12101 opened this issue 5 years ago • 3 comments

Today my bitcoind crashed (and restarted automatically, I have script for it), however, electrumx crashed too, shortly after, it didn't handled reconnecting to bitcoind successfully.

log: electrumx.log

github12101 avatar Aug 18 '20 12:08 github12101

Please noticed spam "INFO:Daemon:running normally", "ERROR:Daemon:connection problem - check your daemon is running. Retrying occasionally..." and "ERROR:Daemon:starting up checking blocks. Retrying occasionally..." occuring dozens of times every second. I wouldn't call that "Retrying occasionally". Perhaps we can limit this message to one every 5 seconds?

github12101 avatar Aug 18 '20 12:08 github12101

I am using latest electrumx from git (commit 148df48fca633da0f1d8dcdf8e7f9c1cdcb392fb dated Fri Jul 3 12:17:54 2020 -0500) and bitcoind 0.20.0 on Debian Buster 10 AMD64.

github12101 avatar Aug 18 '20 12:08 github12101

Looks like the pile of retries were from a pile of requests. A single request to the daemon has a backoff routine for retries, but when there are a lot of them, each one of those requests will be retrying. We may be able to fix with a more global throttle.

The crash endured is interesting too. Maybe we need to mark mempool data as dirty prior to resuming mempool sync.

JustinTArthur avatar Oct 12 '20 04:10 JustinTArthur