HBASE-28634 Fix FuzzyRowFilter may not return data on reverse scans #6482
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Changes:
- Reproduced the issue with a mini cluster test.
- Corrected reverse unit tests in TestFuzzyRowFilter as some expectations were not correct.
- Fixed hint returned by FuzzyRowFilter.getNextForFuzzyRule() in the reverse case:
- Before we only trimmed the trailing zeros from the hint in the forward scan case. From now on we also do this in the reverse case.
- Also extracted PrefixFilter.increaseLastNonMaxByte() method to PrivateCellUtil so that it can be reused in FuzzyRowFilter.
- When the hint should contain a 0xFF. As a start, when we have a reverse scan, we not only need trailing 0xff's instead of trailing 0x00's, but it seems we always need 0xff's instead of the 0x00's.
- Made some small improvements to FuzzyRowFilter which IntelliJ IDEA suggested (final fields, simplifications).
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…6482) Signed-off-by: Istvan Toth <[email protected]> (cherry picked from commit 20e510f)
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…6482) Signed-off-by: Istvan Toth <[email protected]> (cherry picked from commit 20e510f)
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…pache#6482) Signed-off-by: Istvan Toth <[email protected]>
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…pache#6482) Signed-off-by: Istvan Toth <[email protected]> (cherry picked from commit 20e510f)
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This is the backport of #6457 to
branch-2Changes:
TestFuzzyRowFilteras some expectations were not correct.FuzzyRowFilter.getNextForFuzzyRule()in the reverse case:PrefixFilter.increaseLastNonMaxByte()method toPrivateCellUtilso that it can be reused inFuzzyRowFilter.0xFF. As a start, when we have a reverse scan, we not only need trailing0xff's instead of trailing0x00's, but it seems we always need0xff's instead of the0x00's.FuzzyRowFilterwhich IntelliJ IDEA suggested (final fields, simplifications).