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https://issues.apache.org/jira/browse/CASSANDRA-6761?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13911111#comment-13911111
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sankalp kohli commented on CASSANDRA-6761:
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I cannot reproduce it in 1.2.13. Here are the steps I followed.
1) Download 1.2.13 from http://archive.apache.org/dist/cassandra/1.2.13/
2) Change cassandra.yaml and enable row cache.
row_cache_size_in_mb: 10
3) Start Cassandra.
4) Issue node tool info
Token : 3715434916171109180
ID : a8add381-8544-438b-b7a5-0fa917f4844b
Gossip active : true
Thrift active : true
Native Transport active: true
Load : 14.02 KB
Generation No : 1393293410
Uptime (seconds) : 13
Heap Memory (MB) : 63.99 / 4016.00
Data Center : datacenter1
Rack : rack1
Exceptions : 0
Key Cache : size 216 (bytes), capacity 104857600 (bytes), 7 hits, 10
requests, 0.700 recent hit rate, 14400 save period in seconds
Row Cache : size 0 (bytes), capacity 10485760 (bytes), 0 hits, 0
requests, NaN recent hit rate, 0 save period in seconds
> A positive value of row_cache_save_period is needed to enable row cache
> -----------------------------------------------------------------------
>
> Key: CASSANDRA-6761
> URL: https://issues.apache.org/jira/browse/CASSANDRA-6761
> Project: Cassandra
> Issue Type: Bug
> Reporter: Robert Supencheck
> Priority: Minor
>
> When the setting for row_cache_save_period is 0, the value specified for
> row_cache_size_in_mb is not utilized.
> The cassandra version with which this behavior has been observed is:
> adminuser@Ubuntu1:~$ nodetool version
> ReleaseVersion: 1.2.13.2
> To replicate
> 1) Stop dse;
> 2) Edit the cassandra.yaml file, setting the value of the
> row_cache_size_in_mb to be a nonzero value;
> 3) Start dse;
> 4) Run the 'nodetool info' command and observe the following line in the
> output:
> Row Cache : size 0 (bytes), capacity 0 (bytes), 0 hits, 0 requests, NaN
> recent hit rate, 0 save period in seconds.
> The expected behavior is that the value of the capacity parameter in the "Row
> Cache" row of the above nodetool output would report the setting for
> row_cache_size_in_mb. If the value of row_cache_save_period is set to a
> positive value, the nodetool output correctly reports the capacity as the
> value for the row_cache_size_in_mb parameter.
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