Cassandra中的数据分发 [英] Data Distribution in Cassandra

问题描述

我听说过Cassandra及其发行。其实想知道现象，数据如何在整个集群中分布？我的意思是Cassandra如何确定哪些节点具有哪些数据？

I have heard about Cassandra and its distribution. Actually want to know phenomena how data are distributed in the whole cluster? i mean How does Cassandra decide which nodes have what data?

推荐答案

负责的一组节点（一个或多个）

The set of nodes (a single node, or several) responsible for any given piece of data is determined by:

• 行键（数据按行键分区）


• 复制因子


• 复制策略

重要的是要了解Cassandra不会根据更改的特性（例如当前负载，打开或关闭的节点或客户端碰到的节点）来更改给定行键的副本集。

It is important to understand that Cassandra does not alter the replica set for a given row key based on changing characteristics like current load, which nodes are up or down, or which node your client happens to talk to.

有关更多详细信息，请通过 cassandra常见问题解答

For more details go through cassandra FAQ

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