[jira] [Created] (HADOOP-16021) SequenceFile.createWriter appendIfExists codec cause NullPointerException

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

asin created HADOOP-16021:
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             Summary: SequenceFile.createWriter appendIfExists codec cause NullPointerException
                 Key: HADOOP-16021
                 URL: https://issues.apache.org/jira/browse/HADOOP-16021
             Project: Hadoop Common
          Issue Type: Bug
          Components: common
    Affects Versions: 2.7.3
         Environment: windows10, hadoop2.7.3, jdk8
            Reporter: asin
         Attachments: 57.png

 
I want append the data in a file , when i use SequenceFile.appendIfExists , it throw NullPointerException at at org.apache.hadoop.io.SequenceFile$Writer.(SequenceFile.java:1119)


when i remove the 'appendIfExists', it works, but it will cover old file.

 

when i try use CompressionType.RECORD or CompressionType.BLOCK throw "not support" exception

 
{code:java}
// my code
SequenceFile.Writer writer = null; writer = SequenceFile.createWriter(conf, SequenceFile.Writer.file(path), SequenceFile.Writer.keyClass(Text.class), SequenceFile.Writer.valueClass(Text.class), SequenceFile.Writer.appendIfExists(true) );
{code}
 
 
{{more info see:https://stackoverflow.com/questions/53943978/hadoop-sequencefile-createwriter-appendifexists-codec-cause-nullpointerexception}}



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