title: Sphinx Search new.sph is not readable. Skipping
body: <p>On every request in my searchd.log appears following warnings:</p>
  
  <pre><code>[Tue Dec  9 17:05:12.468 2014] [ 5493] DEBUG: CheckRotate invoked
  [Tue Dec  9 17:05:12.469 2014] [ 5493] DEBUG: conn 127.0.0.1:60103(1378659): got handshake, major v.1, err 0
  [Tue Dec  9 17:05:12.469 2014] [ 5493] DEBUG: /sphinx/lib/index_1.new.sph is not readable. Skipping
  [Tue Dec  9 17:05:12.469 2014] [ 5493] DEBUG: /sphinx/lib/index_1_delta.new.sph is not readable. Skipping
  [Tue Dec  9 17:05:12.469 2014] [ 5493] DEBUG: /sphinx/lib/index_2.new.sph is not readable. Skipping
  [Tue Dec  9 17:05:12.469 2014] [ 5493] DEBUG: /sphinx/lib/index_2_delta.new.sph is not readable. Skipping
  [Tue Dec  9 17:05:12.469 2014] [ 5493] WARNING: nothing to rotate after SIGHUP ( in queue=0 )
  </code></pre>
  
  <p>I have tried to merge index'es:</p>
  
  <pre><code>/opt/sphinx-2.2.6/bin/indexer --config sphinx.conf --rotate index_1_delta
  /opt/sphinx-2.2.6/bin/indexer --config sphinx.conf --rotate --merge index_1 index_1_delta
  </code></pre>
  
  <p>Or even rotate all:</p>
  
  <pre><code>/opt/sphinx-2.2.6/bin/indexer --config sphinx.conf --rotate --all
  </code></pre>
  
  <p>But it doesn't help. Any ideas how to solve this warning?</p>