Persist temporary setting to etcd (#3131)#3228
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@longfangsong please accept the invitation then you can push to the cherry-pick pull requests. |
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Signed-off-by: longfangsong <longfangsong@icloud.com>
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cherry-pick #3131 to release-4.0
Signed-off-by: longfangsong longfangsong@icloud.com
What problem does this PR solve?
Sometimes lightning and BR want to patch some of the configuation, #3082 support this, but this implemetion store all the temporary setting in memory, this will cause these settings not taking effect when pd master in cluster is down.
What is changed and how it works?
Save the temporary setting to etcd
See this doc for details.
Check List
Tests
Code changes
Side effects
Release note