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via Google Groups by Mateusz Berezecki, 2 years ago
This exception has no message.
java.lang.NullPointerException at org.apache.hadoop.mapred.MapTask$TrackedRecordReader.close(MapTask.java:210) at org.apache.hadoop.mapred.MapTask.closeQuietly(MapTask.java:1976) at org.apache.hadoop.mapred.MapTask.runOldMapper(MapTask.java:468) at org.apache.hadoop.mapred.MapTask.run(MapTask.java:343) at org.apache.hadoop.mapred.YarnChild$2.run(YarnChild.java:164) 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:1693) at org.apache.hadoop.mapred.YarnChild.main(YarnChild.java:158)