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MINOR: Add missing docs for migration metrics (#15718) 

Reviewers: Mickael Maison <mickael.maison@gmail.com>
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Igor Soarez 2024-04-16 15:20:52 +01:00 committed by GitHub
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@ -2113,6 +2113,24 @@ These metrics are reported on both Controllers and Brokers in a KRaft Cluster
<td>The number of active brokers as observed by this Controller.</td>
<td>kafka.controller:type=KafkaController,name=ActiveBrokerCount</td>
</tr>
<tr>
<td>Migrating ZK Broker Count</td>
<td>The number of brokers registered with the Controller that haven't yet migrated to KRaft mode.</td>
<td>kafka.controller:type=KafkaController,name=MigratingZkBrokerCount</td>
</tr>
<tr>
<td>ZK Migrating State</td>
<td>
<ul style="list-style: none; padding-left: 0; margin: 0;">
<li>0 - NONE, cluster created in KRaft mode;</li>
<li>4 - ZK, Migration has not started, controller is a ZK controller;</li>
<li>2 - PRE_MIGRATION, the KRaft Controller is waiting for all ZK brokers to register in migration mode;</li>
<li>1 - MIGRATION, ZK metadata has been migrated, but some broker is still running in ZK mode;</li>
<li>3 - POST_MIGRATION, the cluster migration is complete;</li>
</ul>
</td>
<td>kafka.controller:type=KafkaController,name=ZkMigrationState</td>
</tr>
<tr>
<td>Global Topic Count</td>
<td>The number of global topics as observed by this Controller.</td>
@ -2126,7 +2144,7 @@ These metrics are reported on both Controllers and Brokers in a KRaft Cluster
<tr>
<td>Offline Partition Count</td>
<td>The number of offline topic partitions (non-internal) as observed by this Controller.</td>
<td>kafka.controller:type=KafkaController,name=OfflinePartitionCount</td>
<td>kafka.controller:type=KafkaController,name=OfflinePartitionsCount</td>
</tr>
<tr>
<td>Preferred Replica Imbalance Count</td>