Gera Shegalov created MAPREDUCE-5931:
----------------------------------------
Summary: Validate SleepJob command line parameters
Key: MAPREDUCE-5931
URL: https://issues.apache.org/jira/browse/MAPREDUCE-5931
Project: Hadoop Map/Reduce
Issue Type: Bug
Components: test
Affects Versions: 1.2.1, 2.4.0
Reporter: Gera Shegalov
Assignee: Gera Shegalov
Priority: Minor
This is a minor issue per se. I had a typo in my script specifying a negative
number of reducers for the SleepJob. It results in the exception that is far
from the root cause, and appeared as a serious issue with the map-side sort.
{noformat}
2014-06-17 21:42:48,072 INFO [main] org.apache.hadoop.mapred.MapTask: Ignoring
exception during close for
org.apache.hadoop.mapred.MapTask$NewOutputCollector@972141f
java.lang.NullPointerException
at
org.apache.hadoop.mapred.MapTask$MapOutputBuffer.flush(MapTask.java:1447)
at
org.apache.hadoop.mapred.MapTask$NewOutputCollector.close(MapTask.java:700)
at org.apache.hadoop.mapred.MapTask.closeQuietly(MapTask.java:1990)
at org.apache.hadoop.mapred.MapTask.runNewMapper(MapTask.java:774)
at org.apache.hadoop.mapred.MapTask.run(MapTask.java:340)
at org.apache.hadoop.mapred.YarnChild$2.run(YarnChild.java:173)
at java.security.AccessController.doPrivileged(Native Method)
at javax.security.auth.Subject.doAs(Subject.java:415)
at
org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1626)
at org.apache.hadoop.mapred.YarnChild.main(YarnChild.java:168)
2014-06-17 21:42:48,075 WARN [main] org.apache.hadoop.mapred.YarnChild:
Exception running child : java.lang.IllegalArgumentException
at java.nio.ByteBuffer.allocate(ByteBuffer.java:330)
at org.apache.hadoop.mapred.SpillRecord.<init>(SpillRecord.java:51)
at
org.apache.hadoop.mapred.MapTask$MapOutputBuffer.mergeParts(MapTask.java:1824)
at
org.apache.hadoop.mapred.MapTask$MapOutputBuffer.flush(MapTask.java:1484)
at
org.apache.hadoop.mapred.MapTask$NewOutputCollector.close(MapTask.java:700)
at org.apache.hadoop.mapred.MapTask.runNewMapper(MapTask.java:770)
at org.apache.hadoop.mapred.MapTask.run(MapTask.java:340)
at org.apache.hadoop.mapred.YarnChild$2.run(YarnChild.java:173)
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:1626)
at org.apache.hadoop.mapred.YarnChild.main(YarnChild.java:168)
{noformat}
--
This message was sent by Atlassian JIRA
(v6.2#6252)
