asin created HADOOP-16021:
-----------------------------
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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