我最后做了低于期权，使低于期权的价值增加了10倍。
编辑/etc/cassandra/cassandra.yaml文件

sudo nano /etc/cassandra/cassandra.yaml

# How long the coordinator should wait for read operations to complete

read_request_timeout_in_ms: 50000

# How long the coordinator should wait for seq or index scans to complete

range_request_timeout_in_ms: 100000

# How long the coordinator should wait for writes to complete

write_request_timeout_in_ms: 20000

# How long the coordinator should wait for counter writes to complete

counter_write_request_timeout_in_ms: 50000

# How long a coordinator should continue to retry a CAS operation

# that contends with other proposals for the same row

cas_contention_timeout_in_ms: 10000

# How long the coordinator should wait for truncates to complete

# (This can be much longer, because unless auto_snapshot is disabled

# we need to flush first so we can snapshot before removing the data.)

truncate_request_timeout_in_ms: 600000

# The default timeout for other, miscellaneous operations

request_timeout_in_ms: 100000

# How long before a node logs slow queries. Select queries that take longer than

# this timeout to execute, will generate an aggregated log message, so that slow queries

# can be identified. Set this value to zero to disable slow query logging.

slow_query_log_timeout_in_ms: 5000

然后打开终端并执行以下命令

cqlsh --request-timeout=6000

一切看起来都很好。