Fix a Bloom filter bug introduced by HFile v2 and TestMultiColumnScanner that
caught it
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Key: HBASE-4350
URL: https://issues.apache.org/jira/browse/HBASE-4350
Project: HBase
Issue Type: Bug
Reporter: Mikhail Bautin
Assignee: Mikhail Bautin
Fix For: 0.92.0
Nicolas pointed out to me that the new unit test TestMultiColumnScanner that I
wrote for the multi-column scanner Bloom filter optimization (which we will
soon release) did not pass on the open-source trunk, and it bisected down to
the HFile v2 commit. I debugged the unit test and found that there was a
serious bug in HFile v2 Bloom filter lookup not caught by any of the existing
unit tests: Bloom filters were used for "non-Get" Scans, which did not have
minimum/maximum row set correctly, and some scan results were not returned.
This diff is the unit test that helped catch the problem and a one-line fix for
the bug.
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