dlmarion commented on code in PR #5438:
URL: https://github.com/apache/accumulo/pull/5438#discussion_r2029120606
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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:
The UpgradeCoordinator code doesn't have any notion of the software version
that I'm aware of. It just has the AccumuloDataVersion, which is a whole number
that is incremented. Also, there would be no way to validate the input of a new
version number in the old version of software. Accumulo version 2.1.4 has no
idea whether 4.0 is valid (It's not is should be 4.0.0). I'm not sure how we
would make this work.
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