Naveen Pishe created SPARK-12214:
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Summary: Spark to provide an API to save user-defined metadata as
part of Sequence File header
Key: SPARK-12214
URL: https://issues.apache.org/jira/browse/SPARK-12214
Project: Spark
Issue Type: New Feature
Components: Spark Core
Affects Versions: 1.3.0
Reporter: Naveen Pishe
There is requirement to save "user-defined" Metadata as part of Sequence File
"Header" using Spark.
To write a User-defined metadata as part of Sequence File using regular Hadoop
API's I pass the metadata object to SequenceFile.Writer constructor which when
creates a SequenceFile ensures the metadata is part of the sequence file header.
Currently Spark's JavaPairRDD Api provides methods to save an RDD to an
SequenceFile format, but I don't see any API which can either give the
SequenceFile.writer or a method where in I can pass the user-defined metadata
so as to be written as part of sequence file header.
The enhancement request an API to implement the same
Creating a Union of two RDD (header + data) and saving as Sequence file is not
a solution as its not a header. Is there any way I can achieve the same.
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