Elliot Miller created HBASE-24901:
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Summary: Create versatile hbase-shell table formatter
Key: HBASE-24901
URL: https://issues.apache.org/jira/browse/HBASE-24901
Project: HBase
Issue Type: Improvement
Components: shell
Affects Versions: 3.0.0-alpha-1
Reporter: Elliot Miller
Assignee: Elliot Miller
As a user, I would like a simple interface for shell output that can be
expressed as a table (ie. output with a fixed number of columns and potentially
many rows). To be clear, this new formatter is not specifically for HBase
"tables." Table is used in the broader sense here.
Goals
- Do not require more than one output cell loaded in memory at a time
- Support many implementations like aligned human-friendly tables, unaligned
delimited, and JSON
Non-goals
- Don't load all the headers into memory at once.
- This may seem like a goal with merit, but we are unlikely to find a use
case for this
formatter with many columns. For example: since HBase tables aren't
relational, our scan
output will not have an output column for every HBase column. Instead, each
output row
will correspond to an HBase cell.
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