By John G. Sanderson (auth.)
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Topic. These parameters are no longer supported, and overrides must be specified using the administrative tools. partitions parameter determines how many partitions a new topic is cre‐ ated with, primarily when automatic topic creation is enabled (which is the default setting). This parameter defaults to 1 partition. Keep in mind that the number of par‐ titions for a topic can only be increased, never decreased. partitions, care will need to be taken to manually create the topic (discussed in Chapter 9).
Info Installing Zookeeper Apache Kafka uses Zookeeper to store metadata information about the Kafka cluster, as well as consumer client details. While it is possible to run a Zookeeper server using scripts contained within the Kafka distribution, it is trivial to install a full version of Zookeeper from the distribution. Figure 2-1. 6 release of Zookeeper. gz. cfg Starting zookeeper ... STARTED # You can now validate that Zookeeper is running correctly in standalone mode by connecting to the client port and sending the four letter command ’srvr’: # telnet localhost 2181 Trying ::1...
The first concern is how much disk capacity is required for retaining messages and how much storage is available on a single broker. If the cluster is required to retain 10 terabytes of data, and a single broker can store 2 TB, then the minimum cluster size is 5 brok‐ ers. In addition, using replication will increase the storage requirements by at least 100%, depending on the replication factor chosen (Chapter 6). This means that this same cluster, configured with replication, now needs to contain at least 10 brokers.
A Relational Theory of Computing by John G. Sanderson (auth.)