[HBASE-6331] Problem with HBCK mergeOverlaps

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Cannot Reproduce
• Component/s: hbck
• Assignee: Unassigned
• Reporter: Anoop Sam John
• Created: 05/Jul/12 08:20
• Updated: 13/Jun/22 16:55
• Resolved: 12/Aug/13 18:42

Description

In HDFSIntegrityFixer#mergeOverlaps(), there is a logic to create the final range of the region after the overlap.
I can see one issue with this code

            if (RegionSplitCalculator.BYTES_COMPARATOR
                    .compare(hi.getEndKey(), range.getSecond()) > 0) {
              range.setSecond(hi.getEndKey());
            }

Here suppose the regions include the end region for which the endKey will be empty, we need to get finally the range with endkey as empty byte[]
But as per the above logic it will see that any other key greater than the empty byte[] and will set it.

Finally the new region created will not get endkey as empty byte[]