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From "Fengdong Yu (JIRA)" <j...@apache.org>
Subject [jira] [Created] (HIVE-7020) NPE when there is no plan file.
Date Tue, 06 May 2014 10:12:15 GMT
Fengdong Yu created HIVE-7020:
---------------------------------

             Summary: NPE when there is no plan file.
                 Key: HIVE-7020
                 URL: https://issues.apache.org/jira/browse/HIVE-7020
             Project: Hive
          Issue Type: Bug
          Components: File Formats
    Affects Versions: 0.13.0
            Reporter: Fengdong Yu


Hive throws NPE when there is no plan file.

Exception message:
{code}
2014-05-06 18:03:17,749 INFO [main] org.apache.hadoop.hive.ql.exec.Utilities: No plan file
found: file:/tmp/test/hive_2014-05-06_18-02-58_539_232619201891510265-1/-mr-10001/8cf1c965-b173-4482-a016-4a51a74b9324/map.xml
2014-05-06 18:03:17,750 WARN [main] org.apache.hadoop.mapred.YarnChild: Exception running
child : java.lang.NullPointerException
	at org.apache.hadoop.hive.ql.io.HiveInputFormat.init(HiveInputFormat.java:255)
	at org.apache.hadoop.hive.ql.io.HiveInputFormat.pushProjectionsAndFilters(HiveInputFormat.java:437)
	at org.apache.hadoop.hive.ql.io.HiveInputFormat.pushProjectionsAndFilters(HiveInputFormat.java:430)
	at org.apache.hadoop.hive.ql.io.CombineHiveInputFormat.getRecordReader(CombineHiveInputFormat.java:587)
	at org.apache.hadoop.mapred.MapTask$TrackedRecordReader.<init>(MapTask.java:168)
	at org.apache.hadoop.mapred.MapTask.runOldMapper(MapTask.java:409)
	at org.apache.hadoop.mapred.MapTask.run(MapTask.java:342)
	at org.apache.hadoop.mapred.YarnChild$2.run(YarnChild.java:167)
	at java.security.AccessController.doPrivileged(Native Method)
	at javax.security.auth.Subject.doAs(Subject.java:415)
	at org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1557)
	at org.apache.hadoop.mapred.YarnChild.main(YarnChild.java:162)
{code}

I looked through the code,
ql/exec/Utilities.java:
{code}
private static BaseWork getBaseWork(Configuration conf, String name) {
  ............
      } catch (FileNotFoundException fnf) {
      // happens. e.g.: no reduce work.
      LOG.info("No plan file found: "+path);
      return null;
    }
{code}

this code was called by HiveInputFormat.java:
{code}
  protected void init(JobConf job) {
    mrwork = Utilities.getMapWork(job);
    pathToPartitionInfo = mrwork.getPathToPartitionInfo();
  }
{code}

mrwork  is null, then NPE here.





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