jsancio commented on PR #16669:
URL: https://github.com/apache/kafka/pull/16669#issuecomment-2265713681
@cmccabe it looks like the tool is not grabbing the hostname correctly:
```bash
$ git diff
diff --git a/config/kraft/server.properties b/config/kraft/server.properties
index dfa9489cbc..f34b18c889 100644
--- a/config/kraft/server.properties
+++ b/config/kraft/server.properties
@@ -28,6 +28,7 @@ node.id=1
# The connect string for the controller quorum
controller.quorum.voters=1@localhost:9093
+unstable.feature.versions.enable=true
############################# Socket Server Settings
#############################
```
```bash
bin/kafka-dump-log.sh --cluster-metadata-decoder --files
/tmp/kraft-combined-logs/__cluster_metadata-0/00000000000000000000-0000000000.checkpoint
Dumping
/tmp/kraft-combined-logs/__cluster_metadata-0/00000000000000000000-0000000000.checkpoint
Snapshot end offset: 0, epoch: 0
baseOffset: 0 lastOffset: 2 count: 3 baseSequence: -1 lastSequence: -1
producerId: -1 producerEpoch: -1 partitionLeaderEpoch: 0 isTransactional: false
isControl: true deleteHorizonMs: OptionalLong.empty position: 0 CreateTime:
1722614412657 size: 160 magic: 2 compresscodec: none crc: 1500076082 isvalid:
true
| offset: 0 CreateTime: 1722614412657 keySize: 4 valueSize: 11 sequence: -1
headerKeys: [] SnapshotHeader
{"version":0,"lastContainedLogTimestamp":1722614412648}
| offset: 1 CreateTime: 1722614412657 keySize: 4 valueSize: 5 sequence: -1
headerKeys: [] KRaftVersion {"version":0,"kRaftVersion":1}
| offset: 2 CreateTime: 1722614412657 keySize: 4 valueSize: 50 sequence: -1
headerKeys: [] KRaftVoters
{"version":0,"voters":[{"voterId":1,"voterDirectoryId":"Xf-d77HEShOwt6TTMEVApQ","endpoints":[{"name":"CONTROLLER","host":"null","port":9093}],"kRaftVersionFeature":{"minSupportedVersion":0,"maxSupportedVersion":1}}]}
baseOffset: 3 lastOffset: 3 count: 1 baseSequence: -1 lastSequence: -1
producerId: -1 producerEpoch: -1 partitionLeaderEpoch: 0 isTransactional: false
isControl: true deleteHorizonMs: OptionalLong.empty position: 160 CreateTime:
1722614412661 size: 75 magic: 2 compresscodec: none crc: 1648935618 isvalid:
true
| offset: 3 CreateTime: 1722614412661 keySize: 4 valueSize: 3 sequence: -1
headerKeys: [] SnapshotFooter {"version":0}
```
Notice that the host field in the voter set control records is set to
`null`. I should change the schema to no allow null values for that field.
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