[HBASE-4509] [hbck] Improve region map output

• Type: Improvement
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 0.90.5, 0.92.0, 0.94.0
• Fix Version/s: 0.90.5
• Hadoop Flags: Reviewed
• Assignee: Jonathan Hsieh
• Reporter: Jonathan Hsieh
• Created: 29/Sep/11 04:05
• Updated: 20/Nov/15 11:53
• Resolved: 01/Oct/11 04:37

Description

HBASE-4375 added a region coverage visualization to hbck in details mode. When users have binary row keys the output is difficult to parse (awk/sed) or pull into programs (numeric, excel) capable of handling tsv formatted data.

This patch

• improves output by using Bytes.toStringBinary (which escapes binary) instead of Bytes.toString when printing keys,
• suggests some repair actions, and
• collects "problem group" that groups regions that are overlapping.

Issue Links

• blocks: HBASE-4377 [hbck] Offline rebuild .META. from fs data only.
• is blocked by: HBASE-4506 [hbck] Allow HBaseFsck to be instantiated without connecting