[jira] [Created] (HIVE-20159) Do Not Print StackTraces to STDERR in ConditionalResolverSkewJoin

["BELUGA BEHR (JIRA)" <ji...@apache.org>]

BELUGA BEHR created HIVE-20159:
----------------------------------

             Summary: Do Not Print StackTraces to STDERR in ConditionalResolverSkewJoin
                 Key: HIVE-20159
                 URL: https://issues.apache.org/jira/browse/HIVE-20159
             Project: Hive
          Issue Type: Improvement
          Components: Query Planning
    Affects Versions: 3.0.0, 4.0.0
            Reporter: BELUGA BEHR


https://github.com/apache/hive/blob/6d890faf22fd1ede3658a5eed097476eab3c67e9/ql/src/java/org/apache/hadoop/hive/ql/plan/ConditionalResolverSkewJoin.java#L121

{code}
    } catch (IOException e) {
      e.printStackTrace();
    }
{code}

Introduce an SLF4J logger to this class and print a WARN level log message if the {{IOException}} from {{Utilities.listStatusIfExists}} is generated.  I suggest WARN because the entire operation doesn't fail if this error happens.  It continues on its way with the data that it was able to collect.  I'm not sure if this is the intended behavior, but for now, an error message in the logging would be better.



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