有没有办法查看使用vnodes的cassandra中每个节点的令牌范围? [英] Is there a way to see token ranges for each node in cassandra which uses vnodes?

问题描述

是否可以查看使用vnode的cassandra中每个节点的令牌范围?我不想看到通过发出nodetool环而获得的每个节点的令牌.我只想查看每个使用vnodes的节点的令牌游标.

Is there a way to see token ranges for each node in cassandra which used vnodes? I dont want to see token for each node which you get by issuing nodetool ring. I just want to see the token ranger for each node which uses vnodes.

推荐答案

给定节点的令牌范围将是键空间拓扑的函数.

The token ranges for a given node will be a function of a keyspace's topology.

您可以通过

Programmatically you can use the java-driver for this using Cluster.getMetadata().getTokenRanges(keyspace, host). The following code example shows retrieving all token ranges by host for a keyspace:

String keyspace = "mykeyspace";
for(Host host : cluster.getMetadata().getAllHosts()) {
    Set<TokenRange> hostRanges = cluster.getMetadata().getTokenRanges(keyspace, host);
}

此外，您还可以通过org.apache.cassandra.db:type=StorageService#getRangeToEndpointMap|getRangeToRpcaddressMap(String)

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