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MINOR: Fix partition numbering from 0 to P-1 instead of P in docs #8572

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kkonstantine merged 1 commit into from
Apr 28, 2020
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MINOR: Fix partition numbering from 0 to P-1 instead of P in docs #8572

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2 changes: 1 addition & 1 deletion docs/protocol.html
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Expand Up @@ -75,7 +75,7 @@ <h5><a id="protocol_network" href="#protocol_network">Network</a></h5>

<h5><a id="protocol_partitioning" href="#protocol_partitioning">Partitioning and bootstrapping</a></h5>

<p>Kafka is a partitioned system so not all servers have the complete data set. Instead recall that topics are split into a pre-defined number of partitions, P, and each partition is replicated with some replication factor, N. Topic partitions themselves are just ordered "commit logs" numbered 0, 1, ..., P.</p>
<p>Kafka is a partitioned system so not all servers have the complete data set. Instead recall that topics are split into a pre-defined number of partitions, P, and each partition is replicated with some replication factor, N. Topic partitions themselves are just ordered "commit logs" numbered 0, 1, ..., P-1.</p>

<p>All systems of this nature have the question of how a particular piece of data is assigned to a particular partition. Kafka clients directly control this assignment, the brokers themselves enforce no particular semantics of which messages should be published to a particular partition. Rather, to publish messages the client directly addresses messages to a particular partition, and when fetching messages, fetches from a particular partition. If two clients want to use the same partitioning scheme they must use the same method to compute the mapping of key to partition.</p>

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