The stack 1um-2PM stack ran out of disk space during a regression test and I could not drop tables. I manually tried to drop tables (not part of this regression test) and also got the error. I also created a single-column table and tried to drop it and also got the same error.
MariaDB [tpch100c]> drop table nation;
ERROR 1815 (HY000): Internal error: CAL0009: Drop table failed due to IDB-2044: An internal error occurred. Check the error log file & contact support.
May 9 09:55:43 s1pm1 PrimProc: 43.846635 |0|0|0| C 28 CAL0000: columncommand.cpp error on projectResultRG for oid 1041 lbid 222208: input rids 290, output rids 287#012: Restarted a syscat job 120 times, bailing#012
I eventually had to do a new installation (both RPMs and empty databases). With more disk space available, the regression test was able to run.