nodetool verify

Verify (check data checksum for) one or more tables.

Synopsis

nodetool [options] verify [(-e | --extended-verify)] [--] [<keyspace> <tables>...]

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.
`-e`	`--extended-verify`	Verify each cell data, beyond simply checking SSTable checksums.
`keyspace`	Name of keyspace.
`table`	One or more table names, separated by a space.
`--`	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 verify 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.

Description

The nodetool verify command checks the data checksum for one or more specified tables. An optional argument, -e or --extended-verify, will verify each cell data, whereas without the option, only the SSTable checksums are verified.

Examples

nodetool -u cassandra -pw cassandra verify cycling cyclist_name

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