Yannick Welsch b4a1199e87 Uniquely associate term with update task during election (#62212) ...

There is a small race when processing the cluster state that is used to
establish a newly elected leader as master of the cluster: it can pick the term
in its master state update task from a different (newer) election. This trips
an assertion in `Coordinator.publish(...)` where we claim that the term on the
state allows to uniquely define the pre-state but this isn't so. There are no
bad consequences of this race since such a publication fails later on anyway.

This PR fixes things so that the assertion holds true by improving the handling
of terms during cluster state processing by associating each master state
update task that is used to establish a newly elected leader with the correct
corresponding term from its election. It also explicitly handles the case where
the pre-state that is used as base state has already superseded the current
state. As a nice side-effect, join batching now only happens based on the same
term.

Closes #61437

2020-10-05 11:46:10 +01:00

..

licenses

Upgrade lucene to lucene-8.7.0-snapshot-3b59906 (#62978)

2020-09-28 16:52:31 -04:00

src

Uniquely associate term with update task during election (#62212)

2020-10-05 11:46:10 +01:00

build.gradle

Search - add case insensitive support for regex queries. (#59441) (#61532)

2020-08-25 17:18:59 +01:00