ra_log: Allow resetting last-written index to snapshot #558
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A leader might've taken a snapshot at the last index before a partition takes place. It can then write commands after the partition is in effect and the commands will not be committed. Then another leader can be elected and ask the deposed leader to reset its log down to the snapshot index. Previously this crashed since `ra_log:set_last_index/2` did not consider the snapshot state.
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This is a bit tricky to test since |
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A leader might've taken a snapshot at the last index before a partition takes place. It can then write commands after the partition is in effect and the commands will not be committed. Then another leader can be elected and ask the deposed leader to reset its log down to the snapshot index. Previously this crashed since
ra_log:set_last_index/2did not consider the snapshot state.Fixes #557