Recently, we had an issue where our kafka brokers were shut down hard (and so did not write out the clean shutdown file). Thus on restart, it went through all logs and ran a recovery on them.
Unfortunately, this took a long time (on the order of 30 minutes). We have a lot of topics (e.g. ~1000 or so). Is there anyway this can be done more quickly, say in parallel? Also, it be done as a background process, so the server can start up and start receiving messages, logs for incoming topics are prioritized in the recovery process, and perhaps messages can still be buffered in memory while the log recovery is happening? It seems onerous to block all activity for 30 minutes while a slow, serial, recovery job happens.... Thoughts? Jason
