THIS IS A TEST INSTANCE. ALL YOUR CHANGES WILL BE LOST!!!!
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Role | ZooKeeper Path | Type | Data Description | ||
|---|---|---|---|---|---|
<ac:structured-macro ac:name="unmigrated-wiki-markup" ac:schema-version="1" ac:macro-id="3c3ea8c70c186830-e7690df8-4a5f4230-9e009361-c74bacec71ab2e2edd150db4"><ac:plain-text-body><![CDATA[ | ID Registry |
| Ephemeral | String in the format of "creator:host:port" of the broker. | ]]></ac:plain-text-body></ac:structured-macro> |
<ac:structured-macro ac:name="unmigrated-wiki-markup" ac:schema-version="1" ac:macro-id="216942039db9fb0d-005071c1-42404816-94cbbad9-4a7ebd1376bd5befb69b7443"><ac:plain-text-body><![CDATA[ | Topic Registry |
| Ephemeral | Number of partitions that topic has on that Broker. | ]]></ac:plain-text-body></ac:structured-macro> |
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- All Consumers in a ConsuerGroup will come to a consensus as to who is consuming what.
- Each Broker+Topic+Partition combination is consumed by one and only one Consumer, even if it means that some Consumers don't get anything at all.
Wiki Markup A Consumer should try to have as many partitions on the same Broker as possible, so sort the list by \[Broker ID\]-\[Partition\] (0-0, 0-1, 0-2, etc.), and assign them in chunks.
- Consumers are sorted by their Consumer IDs. If there are three Consumers, two Brokers, and two three partitions in each, the split might look like:
Wiki Markup Consumer A: \[0-0, 0-1\]
Wiki Markup Consumer B: \[0-2, 1-0\]
Wiki Markup Consumer C: \[1-1, 1-2\]
- If the distribution can't be even and some Consumers must have more partitions than others, the extra partitions always go to the earlier consumers on the list. So you could have a distribution like 4-4-4-4 or 5-5-4-4, but never 4-4-4-5 or 4-5-4-4.