Harsh J created HADOOP-8597:
---
Summary: FsShell's Text command should be able to read avro data
files
Key: HADOOP-8597
URL: https://issues.apache.org/jira/browse/HADOOP-8597
Project: Hadoop Common
Issue Type: New Feature
Components: fs
Affects Versions: 2.0.0-alpha
Reporter: Harsh J
Similar to SequenceFiles are Apache Avro's DataFiles. Since these are getting
popular as a data format, perhaps it would be useful if {{fs -text}} were to
add some support for reading it, like it reads SequenceFiles. Should be easy
since Avro is already a dependency and provides the required classes.
Of discussion is the output we ought to emit. Avro DataFiles aren't simple as
text, nor have they the singular Key-Value pair structure of SequenceFiles.
They usually contain a set of fields defined as a record, and the usual text
emit, as available from avro-tools via
http://avro.apache.org/docs/current/api/java/org/apache/avro/tool/DataFileReadTool.html,
is in proper JSON format.
I think we should use the JSON format as the output, rather than a delimited
form, for there are many complex structures in Avro and JSON is the easiest and
least-work-to-do way to display it (Avro supports json dumping by itself).
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