morningman opened a new pull request #633: Handle unused disks and tablets report URL: https://github.com/apache/incubator-doris/pull/633 When Backend reports unused replicas, which means these replicas are bad, Frontend should set these replicas as bad and repair them. Also, when a disk is reported unused, Frontend should mark this disk as OFFLINE. And no more replica will be assigned to this disk. We also add 2 new metrics: disk_state and tablet_num on Frontend to monitor the disk state and number of tablets on each Backend. And we optimize the balance process to avoid doing balance when there is no available disk on low load Backend.
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