cassandra count (*) query error OperationTimedOut: errors={}, last_host=127.0.0.1?
<p>when there is too many rows in cassandra table and I run following query in cqlsh:</p>

<pre><code>select count(*) from tableA 
</code></pre>

<p>i get this error:</p>

<pre><code>OperationTimedOut: errors={}, last_host=127.0.0.1
</code></pre>

<p>how can i resolve this error?</p>