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https://issues.apache.org/jira/browse/DRILL-836?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14008213#comment-14008213
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George Chow commented on DRILL-836:
-----------------------------------
An alternative is to have a query against the column-family return a JSON
describing its columns:
SELECT * from hbase.table.columnfamily LIMIT n
N should be small. Maybe it should even be mandatory to avoid scanning the
entire HBase table?
> Implement "DESCRIBE hbase.table.column-family LIMIT n"
> ------------------------------------------------------
>
> Key: DRILL-836
> URL: https://issues.apache.org/jira/browse/DRILL-836
> Project: Apache Drill
> Issue Type: Bug
> Reporter: George Chow
>
> Drill needs to help users understand the available columns in a given HBase
> table's column-family. One way to do this is to implement the DESCRIBE
> command for a column-family. The purpose of this is to let Drill do the
> column sampling. The mandatory LIMIT clause specifies the sample size so as
> to throttle the number of columns returned.
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