THIS IS A TEST INSTANCE. ALL YOUR CHANGES WILL BE LOST!!!!
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RLM receives a callback and unassigns the partition for leader/follower task, If the delete option is enabled then it tries to remove respective segments from RLMM. remote log segment metadata is updated in RLMM by enabling the delete marker. RLMM will eventually delete these segments by using RemoteStorageManager.
OffsetForLeaderEpoch
Look into leader epoch checkpoint cache. This is stored in tiered storage and it may be fetched by followers from tiered storage as part of the fetch protocol.
JBOD related changes
Currently, JBOD is supported by altering log dirs in two ways.
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