nodetool getinterdcstreamthroughput

Displays the inter-datacenter stream throughput limit.

Synopsis

nodetool [connection_options] getinterdcstreamthroughput [options]

See connection options for connection options.

Options

Option	Description
`-m, --mib`	Display throughput in MiB/s instead of Mb/s
`-d, --precise-mbit`	Display precise Mb/s value as a decimal
`-e, --entire-sstable-throughput`	Show entire SSTable streaming throughput instead of inter-DC throughput

Description

nodetool getinterdcstreamthroughput shows the maximum throughput for streaming operations between datacenters. By default, the output is in megabits per second (Mb/s), not megabytes. This separate limit allows controlling bandwidth usage across potentially slower or more expensive WAN links.

Examples

Basic Usage

nodetool getinterdcstreamthroughput

Sample Output

Current inter-datacenter stream throughput: 100 Mb/s

A value of unlimited indicates that the configured value is 0 or negative (no throttling).

Display in MiB/s

nodetool getinterdcstreamthroughput --mib

Configuration

The cassandra.yaml parameter name varies by version:

Cassandra Version	Parameter Name	Example	Unit
Pre-4.1	`inter_dc_stream_throughput_outbound_megabits_per_sec`	`100`	Megabits/s
4.1+	`inter_dc_stream_throughput`	`100Mb/s` or `12MiB/s`	Various

# cassandra.yaml (4.1+)
inter_dc_stream_throughput: 100Mb/s

# cassandra.yaml (Pre-4.1)
# inter_dc_stream_throughput_outbound_megabits_per_sec: 100

Use Cases

Verify WAN Bandwidth Settings

nodetool getinterdcstreamthroughput

Multi-DC Operations

# Check before cross-DC rebuild
nodetool getinterdcstreamthroughput

Command	Relationship
setinterdcstreamthroughput	Modify throughput
getstreamthroughput	Intra-DC throughput
netstats	Monitor streaming