dlmarion commented on code in PR #5438:
URL: https://github.com/apache/accumulo/pull/5438#discussion_r2029138422
##########
server/base/src/main/java/org/apache/accumulo/server/AbstractServer.java:
##########
@@ -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;
+ try {
+ if (context.getZooReader().exists(upgradePrepNode)) {
+ throw new IllegalStateException(
+ "Instance has been prepared for upgrade, no servers can be
started."
+ + " To undo this state and abort upgrade preparations delete
the zookeeper node: "
Review Comment:
Do we have any code that knows or can get the current version number (not
the AccumuloDataVersion)?
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