carp84 opened a new pull request #181: HBASE-22283 Print row and table 
information when failed to get region location
URL: https://github.com/apache/hbase/pull/181
 
 
   ## What is the purpose of the change
   
   This PR refines the client logging message on 
`RpcRetryingCallerWithReadReplicas.getRegionLocations` for easier debugging.
   
   ## Brief change log
   
   * Add row and table name into the logging message of 
`RpcRetryingCallerWithReadReplicas.getRegionLocations` when failed to get 
region location or the location got is null.
   
   
   ## Verifying this change
   
   This change could be verified by existing tests.
   
   ## Does this pull request potentially affect one of the following parts:
   
     - Dependencies (does it add or upgrade a dependency): (no)
     - The public API, i.e., is any changed class annotated with 
`@Public(Evolving)`: (no)
     - The runtime code path (performance sensitive): (no)
     - Anything that affects deployment or recovery: AssignmentManager, WAL 
system, ZooKeeper: (no)
     - File system relative (HDFS/S3): (no)
   
   ## Documentation
   
     - Does this pull request introduce a new feature? (no)
     - If yes, how is the feature documented? (not applicable)
   

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