nodetool inmemorystatus

Returns a list of the in-memory tables and the amount of memory each table is using.

Synopsis

nodetool [<connection_options>] inmemorystatus
[--] [<keyspace_name> <table_name> [<table_name> ...]]

Definition

The short- and long-form options are comma-separated.

Connection options

-h, --host hostname: The hostname or IP address of a remote node or nodes. When omitted, the default is the local machine.
-p, --port jmx_port: The JMX port number.
-pw, --password jmxpassword: The JMX password for authenticating with secure JMX. If a password is not provided, you are prompted to enter one.
-pwf, --password-file jmx_password_filepath: The filepath to the file that stores JMX authentication credentials.
-u, --username jmx_username: The username for authenticating with secure JMX.

Command arguments

--: Separates an option from an argument that could be mistaken for an option.

keyspace_name: The keyspace name.

table_name: One or more table names, separated by a space.

Examples

Print information on all in-memory tables

nodetool inmemorystatus

Results when there are in-memory tables:

Max Memory to Lock:                          3209MB
Current Total Memory Locked:                    260MB
Current Total Memory Not Able To Lock:          17MB
Keyspace                       ColumnFamily                           Size     Couldn't Lock   Usage
cycling                        popular_count                         260MB              17MB      8%
cycling                        birthday_list                           0MB               0MB      0%

Results when there are no in-memory tables:

Max Memory to Lock:                          3209MB
Current Total Memory Locked:                    0MB
Current Total Memory Not Able To Lock:          0MB
No MemoryOnlyStrategy tables found.

Print information on in-memory tables in the cycling keyspace and popular_count table

nodetool inmemorystatus cycling popular_count

Results when the specified table is using MemoryOnlyStrategy:

Max Memory to Lock:                          3209MB
Current Total Memory Locked:                    260MB
Current Total Memory Not Able To Lock:          17MB
Keyspace                       ColumnFamily                           Size     Couldn't Lock   Usage
cycling                        popular_count                         260MB              17MB      8%

Results when the specified table is not using MemoryOnlyStrategy:

nodetool: Keyspace cycling Table birthday_list is not using MemoryOnlyStrategy.