Prevent nblogger from dying on errors during format. #7741
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During bug hunting in NBLS, I run into a very funny situation where the logging of NBLS suddenly stopped. It eventually resumed after a looooong time, but only sometimes.
I debugged into it and found out that some Google commons class was missing which was not used at runtime at all - except to print out JSON-RPC message from NBLS. If that happened, the message formatting failed with an
Error(rather thanExceptionthat is handled in `java.util.logging.Formatter.formatMessage. This led to death of the log publishing thread. The thread eventually resumed when the buffer was full - but dies again on another 'unformattable' message.This PR adds additional wrapper that catches everything except
ThreadDeathand prevents the logging thread from dying.