df46848fb0
Since 7.4, we switch from translog to Lucene as the source of history for peer recoveries. However, we reduce the likelihood of operation-based recoveries when performing a full cluster restart from pre-7.4 because existing copies do not have PPRL. To remedy this issue, we fallback using translog in peer recoveries if the recovering replica does not have a peer recovery retention lease, and the replication group hasn't fully migrated to PRRL. Relates #45136 |
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