dlmarion commented on code in PR #5438:
URL: https://github.com/apache/accumulo/pull/5438#discussion_r2029316040
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server/base/src/main/java/org/apache/accumulo/server/AbstractServer.java:
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@@ -68,6 +69,18 @@ protected AbstractServer(String appName, ServerOpts opts,
String[] args) {
var siteConfig = opts.getSiteConfiguration();
SecurityUtil.serverLogin(siteConfig);
context = new ServerContext(siteConfig);
+ final String upgradePrepNode = context.getZooKeeperRoot() +
Constants.ZPREPARE_FOR_UPGRADE;
Review Comment:
So, in the related branch (#5383 ) the pre-upgrade check that is run in the
newer version of software deletes this node and creates the
UpgradeProgressTracker object in ZooKeeper. This object has the starting
version, then ending version of the upgrade, and tracks the state of the
upgrade through the various phases.
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