Querying for account from nodeos can hang

[poplexity]

Under certain conditions, querying nodeos fails and hangs all queries, once retry begins it will loop until it fails. During this time other queries (from cli, not just from consensus client) will also fail, so something is pausing nodeos enough that it cannot respond to queries.

Need to investigate further, try to reproduce maybe with many concurrent queries to nodeos via the account cache.