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https://issues.apache.org/jira/browse/HADOOP-1789?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#action_12523159
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stack commented on HADOOP-1789:
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Cells in hbase hold arrays of bytes. Column descriptors currently hold info
such as whether to use bloom filters, compression type, etc. Might add
optional name of class to use formatting cell content defaulting to binary.
Freemarker or velocity templates would be worth a look. Would be good for
unadorned and ascii outputs. Escaping xml and csv before passing it to the
outputting template would make their use for xml and csv a little awkward.
> [hbaseshell] output formatting
> ------------------------------
>
> Key: HADOOP-1789
> URL: https://issues.apache.org/jira/browse/HADOOP-1789
> Project: Hadoop
> Issue Type: New Feature
> Components: contrib/hbase
> Reporter: stack
> Priority: Minor
>
> hbaseshell currently outputs results using an ascii table.
> This issue is about the hbaseshell offering a number of output formats beyond
> plain ascii table. It would be grand if output formatting was pluggable so
> folks could add new ones as they saw fit.
> Currently, there is a painful need for unadorned output so folks can do a
> 'select page:content from webrepository where
> row="http://apache.com/index.html";; and they get back the page content only.
> Other output formats might be: csv, xml, or (x)html
> Other related things to consider, but probably not as part of this issue, is
> that if we output xml, then we should probably have a sympathetic input
> parser for xml files (similar for csv). Let this issue just be about
> formatting (another issue can be done to add pluggable input parsers). Where
> the output lands should also be done in another issue: i.e. dependent on the
> command, output probably default to stdout but folks should be able to
> designate an output file (and target filesystem) as in
> hdfs://master.hdfsnode.com:8990/output/dump.txt or file:///tmp/dump.txt or
> s3://...., etc.
> This issue is an outgrowth of HADOOP-1720
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