anchor.diff:  
   CAT API::
   * Provides a cat api endpoint for templates. {pull}20545[#20545] (issue: {issue}20467[#20467])
  -
  -Plugin Discovery File::
  -* File-based discovery plugin {pull}20394[#20394] (issue: {issue}20323[#20323])
   
   Query DSL::
   * Add "all fields" execution mode to simple_query_string query {pull}21341[#21341] (issues: {issue}19784[#19784], {issue}20925[#20925])
  
positive.code: Logging::
  * Log failure to connect to node at info instead of debug {pull}21809[#21809] (issue: {issue}6468[#6468])
  * Truncate log messages from the end {pull}21609[#21609] (issue: {issue}21602[#21602])
  * Ensure logging is initialized in CLI tools {pull}20575[#20575]
  * Give useful error message if log config is missing {pull}20493[#20493]
  * Complete Elasticsearch logger names {pull}20457[#20457] (issue: {issue}20326[#20326])
  * Logging shutdown hack {pull}20389[#20389] (issue: {issue}20304[#20304])
  * Disable console logging {pull}20387[#20387]
  
  
negative.code: * Do not prematurely shutdown Log4j {pull}21519[#21519] (issue: {issue}21514[#21514])
  * Assert status logger does not warn on Log4j usage {pull}21339[#21339]
  * Fix logger names for Netty {pull}21223[#21223] (issue: {issue}20457[#20457])
  
  Mapping::
  * Fail to index fields with dots in field names when one of the intermediate objects is nested. {pull}21787[#21787] (issue: {issue}21726[#21726])
  * Uncommitted mapping updates should not efect existing indices {pull}21306[#21306] (issue: {issue}21189[#21189])
  
  Network::
  * DiscoveryNode and TransportAddress should preserve host information {pull}21828[#21828]
  * Die with dignity on the network layer {pull}21720[#21720] (issue: {issue}19272[#19272])
  * Prevent double release in TcpTransport if send listener throws an exception {pull}20880[#20880]
  
  Packaging::
  