df488720e0
If a running shard follow task needs to be restarted and the remote connection seeds have changed then a shard follow task currently fails with a fatal error. The change creates the remote client lazily and adjusts the errors a shard follow task should retry. This issue was found in test failures in the recently added ccr rolling upgrade tests. The reason why this issue occurs more frequently in the rolling upgrade test is because ccr is setup in local mode (so remote connection seed will become stale) and all nodes are restarted, which forces the shard follow tasks to get restarted at some point during the test. Note that these tests cannot be enabled yet, because this change will need to be backported to 6.x first. (otherwise the issue still occurs on non upgraded nodes) I also changed the RestartIndexFollowingIT to setup remote cluster via persistent settings and to also restart the leader cluster. This way what happens during the ccr rolling upgrade qa tests, also happens in this test. Relates to #37231 |
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| build.gradle | ||