[HADOOP-835] conf not set for the default Codec when initializing a Reader for a record-compressed sequence file

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 0.9.2
• Fix Version/s: 0.10.0
• Component/s: io
• Assignee: Hairong Kuang
• Reporter: Hairong Kuang
• Created: 19/Dec/06 23:17
• Updated: 05/Jan/07 23:22
• Resolved: 20/Dec/06 19:34

Description

Because the conf field of a default Codec does not get set when initializing a reader for a record-compressed sequence file, a NullPointerException is thrown when attempting to create an input stream for the default Codec as shown in the following stack trace:

java.lang.NullPointerException
at org.apache.hadoop.io.compress.DefaultCodec.createInputStream(DefaultCodec.java:59)
at org.apache.hadoop.io.SequenceFile$Reader.init(SequenceFile.java:1004)
at org.apache.hadoop.io.SequenceFile$Reader.(SequenceFile.java:927)
at org.apache.hadoop.io.SequenceFile$Reader.(SequenceFile.java:918)
at org.apache.hadoop.mapred.SequenceFileRecordReader.(SequenceFileRecordReader.java:39)
at org.apache.hadoop.mapred.SequenceFileInputFormat.getRecordReader(SequenceFileInputFormat.java:55)
at org.apache.hadoop.mapred.MapTask.run(MapTask.java:180)
at org.apache.hadoop.mapred.TaskTracker$Child.main(TaskTracker.java:1388)