The exception is the cluster metadata log directory, which can be configured separately with via metadata.log.dir . If the metadata log directory fails, then the broker cannot continue to run. If the broker isn't running it won't send any heartbeats and the controller will know to reassign leadership and update ISRs.The main benefit of support for multiple log directories is to allow brokers to continue operating if any single one of them fails. Typically, each log directory is mapped to an independent storage device while this critical metadata log directory would instead be mapped to the one of the main system partitions. |