title: Native Transport Requests in Cassandra
body: <p>I got some points about Native Transport Requests in Cassandra using this link : <a href="https://stackoverflow.com/questions/32456843/what-are-native-transport-requests-in-cassandra">What are native transport requests in Cassandra?</a></p>
  
  <p>As per my understanding, any query I execute in Cassandra is an Native Transport Requests.</p>
  
  <p>I frequently get <strong>Request Timed Out</strong> error in Cassandra and I observed the following logs in Cassandra <strong>debug log</strong> and as well as using <code>nodetool tpstats</code></p>
  
  <pre><code>/var/log/cassandra# nodetool tpstats
  Pool Name                    Active   Pending      Completed   Blocked  All time blocked
  MutationStage                     0         0      186933949         0                 0
  ViewMutationStage                 0         0              0         0                 0
  ReadStage                         0         0      781880580         0                 0
  RequestResponseStage              0         0        5783147         0                 0
  ReadRepairStage                   0         0              0         0                 0
  CounterMutationStage              0         0       14430168         0                 0
  MiscStage                         0         0              0         0                 0
  CompactionExecutor                0         0         366708         0                 0
  MemtableReclaimMemory             0         0            788         0                 0
  PendingRangeCalculator            0         0              1         0                 0
  GossipStage                       0         0              0         0                 0
  SecondaryIndexManagement          0         0              0         0                 0
  HintsDispatcher                   0         0              0         0                 0
  MigrationStage                    0         0              0         0                 0
  MemtablePostFlush                 0         0            799         0                 0
  ValidationExecutor                0         0              0         0                 0
  Sampler                           0         0              0         0                 0
  MemtableFlushWriter               0         0            788         0                 0
  InternalResponseStage             0         0              0         0                 0
  AntiEntropyStage                  0         0              0         0                 0
  CacheCleanupExecutor              0         0              0         0                 0
  Native-Transport-Requests         0         0      477629331         0           1063468
  
  Message type           Dropped
  READ                         0
  RANGE_SLICE                  0
  _TRACE                       0
  HINT                         0
  MUTATION                     0
  COUNTER_MUTATION             0
  BATCH_STORE                  0
  BATCH_REMOVE                 0
  REQUEST_RESPONSE             0
  PAGED_RANGE                  0
  READ_REPAIR                  0
  </code></pre>
  
  <p>1) What is the <code>All time blocked</code> state?<br>
  2) What is this value : <code>1063468</code> denotes? How harmful it is?<br>
  3) How to tune this?</p>