nodetool disablehintsfordc

Disable hints for a datacenter.

Synopsis

nodetool [options] disablehintsfordc [--] <datacenter>

Cassandra tarball installations:

installation_location/cassandra/bin

Table 1. Options
Short	Long	Description
`-h`	`--host`	Hostname or IP address.
`-p`	`--port`	Port number.
`-pwf`	`--password-file`	Password file path.
`-pw`	`--password`	Password.
`-u`	`--username`	Remote JMX agent username.
`datacenter`	The data center to disable.
`--`	Separates an option from an argument that could be mistaken for a option.

Note:

For tarball installations, execute the command from the install_location/bin directory.
If a username and password for RMI authentication are set explicitly in the cassandra-env.sh file for the host, then you must specify credentials.
nodetool disablehintsfordc operates on a single node in the cluster if -h is not used to identify one or more other nodes. If the node from which you issue the command is the intended target, you do not need the -h option to identify the target; otherwise, for remote invocation, identify the target node, or nodes, using -h.
[--] can be used to separate command-line options from the list of arguments, when the list might be mistaken for options.

Description

The nodetool disablehintsfordc command is used to turn off hints for a datacenter. This can be useful if there is a downed datacenter, but hints should continue on other datacenters. Another common case is during datacenter failover, when hints will put unnecessary pressure on the datacenter.

Examples

nodetool -u cassandra -pw cassandra disablehintsfordc DC2

The location of the cassandra-env.sh file depends on the type of installation:

Cassandra package installations	/etc/cassandra/cassandra-env.sh
Cassandra tarball installations	`install_location`/conf/cassandra-env.sh