[jira] [Created] (HBASE-22283) Print row and table information when failed to get region location

["Yu Li (JIRA)" <ji...@apache.org>]

Yu Li created HBASE-22283:
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             Summary: Print row and table information when failed to get region location
                 Key: HBASE-22283
                 URL: https://issues.apache.org/jira/browse/HBASE-22283
             Project: HBase
          Issue Type: Improvement
          Components: Client, logging
    Affects Versions: 2.1.4, 2.0.5, 1.4.9
            Reporter: Yu Li
            Assignee: Yu Li


Currently when failed to get region location, especially when the {{RegionLocations}} returned is null in {{RpcRetryingCallerWithReadReplicas.getRegionLocations}} (we may see more useful message if there's an exception thrown), we only log the replica id w/o any detailed information about row and table, which makes the debugging difficult. Below is an example error message:
{noformat}
Caused by: org.apache.hadoop.hbase.client.RetriesExhaustedException: Can't get the location for replica 0
  at org.apache.hadoop.hbase.client.RpcRetryingCallerWithReadReplicas.getRegionLocations(RpcRetryingCallerWithReadReplicas.java:372)
  at org.apache.hadoop.hbase.client.ScannerCallableWithReplicas.call(ScannerCallableWithReplicas.java:153)
  at org.apache.hadoop.hbase.client.ScannerCallableWithReplicas.call(ScannerCallableWithReplicas.java:58)
  at org.apache.hadoop.hbase.client.RpcRetryingCaller.callWithoutRetries(RpcRetryingCaller.java:219)
  at org.apache.hadoop.hbase.client.ClientScanner.call(ClientScanner.java:277)
  at org.apache.hadoop.hbase.client.ClientScanner.loadCache(ClientScanner.java:438)
  at org.apache.hadoop.hbase.client.ClientScanner.next(ClientScanner.java:312)
  at org.apache.hadoop.hbase.MetaTableAccessor.fullScan(MetaTableAccessor.java:639)
  at org.apache.hadoop.hbase.MetaTableAccessor.tableExists(MetaTableAccessor.java:366)
  at org.apache.hadoop.hbase.client.HBaseAdmin.tableExists(HBaseAdmin.java:409)
{noformat}

And here we propose to improve this part.



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