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wdeng avatar image
wdeng asked ·

想请教一个问题,Cassandra复制因子设为1,一个节点挂掉(共3个节点),为什么会查询失败呢?

想请教一个问题,Cassandra复制因子设为1,一个节点挂掉(共3个节点),为什么会查询失败呢?

replicationreplication factor
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Jane Deng avatar image
Jane Deng answered ·

当复制因子是1,集群里只有一份数据备份,存储于三个节点中的一个。如果这个节点下线,相应的查询会失败。通常建议复制因子设为大于1,3 是最常见的复制因子设置。

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