gaurav-narula commented on code in PR #15270:
URL: https://github.com/apache/kafka/pull/15270#discussion_r1470842153
##########
server-common/src/main/java/org/apache/kafka/common/DirectoryId.java:
##########
@@ -153,6 +153,16 @@ public static boolean isOnline(Uuid dir, List<Uuid>
sortedOnlineDirs) {
if (LOST.equals(dir)) {
return false;
}
+
+ // The only time we should have a size be 0 is if we were at a MV
prior to 3.7-IV2
+ // and the system was upgraded. In this case the original list of
directories was purged
+ // during broker registration so we don't know if the directory is
online. We assume
+ // that a broker will halt if all its log directories are down.
Eventually the broker
+ // will send another registration request with information about all
log directories.
+ // Refer KAFKA-16162 for more information
+ if (sortedOnlineDirs.isEmpty()) {
+ return true;
+ }
Review Comment:
Fixed in
[29ec322](https://github.com/apache/kafka/pull/15270/commits/29ec322b21668a7227f6513d270cc3b9af3faccd)
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