[jira] [Created] (HIVE-19912) Schema evolution checks prints a log line in INFO mode for each vectorized rowbatch, impacts performance

["Nita Dembla (JIRA)" <ji...@apache.org>]

Nita Dembla created HIVE-19912:
----------------------------------

             Summary: Schema evolution checks prints a log line in INFO mode for each vectorized rowbatch, impacts performance
                 Key: HIVE-19912
                 URL: https://issues.apache.org/jira/browse/HIVE-19912
             Project: Hive
          Issue Type: Bug
          Components: Hive
    Affects Versions: 3.0.0
            Reporter: Nita Dembla
             Fix For: 3.0.1


While benchmarking query96, noticed 17K log lines printed for each vector rowbactch

 

In file ql/src/java/org/apache/hadoop/hive/ql/io/orc/OrcInputFormat.java

 
{code:java}
@@ -2554,8 +2554,8 @@ public static TypeDescription getDesiredRowTypeDescr(Configuration conf,
     }

     if (haveSchemaEvolutionProperties) {
-      if (LOG.isInfoEnabled()) {
-        LOG.info("Using schema evolution configuration variables schema.evolution.columns " +
+      if (LOG.isDebugEnabled()) {
+        LOG.debug("Using schema evolution configuration variables schema.evolution.columns " +
             schemaEvolutionColumnNames.toString() +
             " / schema.evolution.columns.types " +
             schemaEvolutionTypeDescrs.toString() +{code}
 



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