Data Node Won't Start: Internal program error (failed ndbrequire)

[Jeff Steele]

Hello,

During a nightly backup that has run without problem for many years, my entire NDB cluster crashed. The cluster has two data nodes and I was able to restart one of them this morning, but it looks like a day's worth of data has disappeared. The second node will not start. I get this error message:

Time: Monday 26 October 2020 - 07:15:58
Status: Temporary error, restart node
Message: Internal program error (failed ndbrequire) (Internal error, programming
error or missing error message, please report a bug)
Error: 2341
Error data: restore.cpp
Error object: RESTORE (Line: 1533) 0x00000002 Check (file_ptr.p->m_ctl_file_no =
= 0 || file_ptr.p->m_used_ctl_file_no != Uint32(~0)) || validFlag == 0 failed
Program: ndbmtd
Pid: 6289 thr: 4
Version: mysql-8.0.22 ndb-8.0.22
Trace file name: ndb_4_trace.log.12_t4
Trace file path: /usr/local/mysql/data/ndb_4_trace.log.12 [t1..t7]
***EOM***


Can someone please tell me what I need to do to start the second node?

Thanks much!