Nhat Nguyen df46848fb0 Migrate peer recovery from translog to retention lease (#49448) ...

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

2019-12-15 10:24:39 -05:00

..

src/test/java/org/elasticsearch/upgrades

Migrate peer recovery from translog to retention lease (#49448)

2019-12-15 10:24:39 -05:00

build.gradle

Apply 2-space indent to all gradle scripts (#49071)

2019-11-14 11:01:23 +00:00