nodetool setcachekeystosave
Sets the number of keys saved by each cache for faster post-restart warmup.
Sets the number of keys saved by each cache for faster post-restart warmup.
Synopsis
nodetool <options> setcachekeystosave -- <key-cache-keys-to-save> <row-cache-keys-to-save>
Cassandra tarball installations:
installation_location/cassandra/bin| 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. |
| key-cache-keys-to-save | The number of keys from the key cache to save to the saved caches directory. To disable, set to 0. | |
| row-cache-keys-to-save | The number of keys from the row cache to save to the saved caches directory. To disable, set to 0. | |
| counter-cache-keys-to-save | The number of keys from the counter cache to saved to the saved caches directory. To disable, set to 0. | |
-- |
Separates an option from an argument that could be mistaken for a option. | |
Description
This command saves the specified number of key and row caches to the saved caches directory, which you specify in the cassandra.yaml. The key-cache-keys-to-save argument corresponds to the key_cache_keys_to_save in the cassandra.yaml, which is disabled by default, meaning all keys will be saved. The row-cache-keys-to-save argument corresponds to the row_cache_keys_to_save in the cassandra.yaml, which is disabled by default.
The location of the cassandra.yaml file depends on the type of installation:
| Cassandra package installations | /etc/cassandra/cassandra.yaml |
| Cassandra tarball installations | install_location/cassandra/conf/cassandra.yaml |