我刚刚通过 tarball 在 Ubuntu 上设置了一个全新的 DSE 3.2 实例，3 个节点。一切似乎都设置得很好：
bin/nodetool status
Datacenter: Cassandra
=====================
Status=Up/Down
|/ State=Normal/Leaving/Joining/Moving
-- Address Load Tokens Owns (effective) Host ID Rack
UN 192.168.5.77 102.23 KB 256 34.6% cb04a5a3-8135-42f0-b723-761284355965 rack1
DN 192.168.5.71 41.11 KB 256 31.4% d2c049fd-24ac-49d5-ada2-ca6991e0b70b rack1
UN 192.168.5.74 74.84 KB 256 34.0% 4b188d14-f3e0-4d34-a148-816350d6b69e rack1
我也可以运行 cli 和 cqlsh 。但是，当我运行压力测试时，它给出了：
:/data/dse-3.2.0/resources/cassandra/tools# bin/cassandra-stress
INFO - 2013-11-19 17:24:57.241; com.datastax.bdp.config.DseConfig; Loading settings from file:/data/dse-3.2.0/resources/dse/conf/dse.yaml
INFO - 2013-11-19 17:24:57.390; org.apache.cassandra.config.DatabaseDescriptor; Loading settings from file:/data/dse-3.2.0/resources/cassandra/conf/cassandra.yaml
INFO - 2013-11-19 17:24:57.504; org.apache.cassandra.config.DatabaseDescriptor; Data files directories: [/var/lib/cassandra/data]
INFO - 2013-11-19 17:24:57.504; org.apache.cassandra.config.DatabaseDescriptor; Commit log directory: /var/lib/cassandra/commitlog
INFO - 2013-11-19 17:24:57.505; org.apache.cassandra.config.DatabaseDescriptor; DiskAccessMode 'auto' determined to be mmap, indexAccessMode is mmap
INFO - 2013-11-19 17:24:57.505; org.apache.cassandra.config.DatabaseDescriptor; disk_failure_policy is stop
INFO - 2013-11-19 17:24:57.505; org.apache.cassandra.config.DatabaseDescriptor; Legacy authentication config found. Existing authentication data will be migrated to a system keyspace.
INFO - 2013-11-19 17:24:57.525; org.apache.cassandra.config.DatabaseDescriptor; Global memtable threshold is enabled at 890MB
INFO - 2013-11-19 17:24:57.541; com.datastax.bdp.snitch.DseDelegateSnitch; Setting my role to Cassandra
INFO - 2013-11-19 17:24:57.691; org.apache.cassandra.config.DatabaseDescriptor; Not using multi-threaded compaction
INFO - 2013-11-19 17:24:58.043; com.datastax.bdp.config.DseConfig; Load of settings is done.
Created keyspaces. Sleeping 1s for propagation.
total,interval_op_rate,interval_key_rate,latency/95th/99th,elapsed_time
Operation [1] retried 10 times - error inserting key 0000001 ((UnavailableException))
Operation [2] retried 10 times - error inserting key 0000002 ((UnavailableException))
Operation [3] retried 10 times - error inserting key 0000003 ((UnavailableException))
..
84,8,8,5.5,14.6,39.8,1
FAILURE
这是为什么 ？干杯，马特