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From "Vladimir Rodionov (JIRA)" <j...@apache.org>
Subject [jira] [Created] (HBASE-14782) FuzzyRowFilter skips valid rows
Date Fri, 06 Nov 2015 20:55:10 GMT
Vladimir Rodionov created HBASE-14782:
-----------------------------------------

             Summary: FuzzyRowFilter skips valid rows
                 Key: HBASE-14782
                 URL: https://issues.apache.org/jira/browse/HBASE-14782
             Project: HBase
          Issue Type: Bug
    Affects Versions: 2.0.0
            Reporter: Vladimir Rodionov
            Assignee: Vladimir Rodionov


The issue may affect not only master branch, but previous releases as well.
This is from one of our customers:
{quote}
We are experiencing a problem with the FuzzyRowFilter for HBase scan. We think that it is
a bug. 
Fuzzy filter should pick a row if it matches filter criteria irrespective of other rows present
in table but filter is dropping a row depending on some other row present in table. 


Details/Step to reproduce/Sample outputs below: 

Missing row key: \x9C\x00\x044\x00\x00\x00\x00 
Causing row key: \x9C\x00\x03\xE9e\xBB{X\x1Fwts\x1F\x15vRX 


Prerequisites 
1. Create a test table. HBase shell command -- create 'fuzzytest','d' 
2. Insert some test data. HBase shell commands: 
• put 'fuzzytest',"\x9C\x00\x044\x00\x00\x00\x00",'d:a','junk' 
• put 'fuzzytest',"\x9C\x00\x044\x01\x00\x00\x00",'d:a','junk' 
• put 'fuzzytest',"\x9C\x00\x044\x00\x01\x00\x00",'d:a','junk' 
• put 'fuzzytest',"\x9C\x00\x044\x00\x00\x01\x00",'d:a','junk' 
• put 'fuzzytest',"\x9C\x00\x044\x00\x01\x00\x01",'d:a','junk' 
• put 'fuzzytest',"\x9B\x00\x044e\xBB\xB2\xBB",'d:a','junk' 
• put 'fuzzytest',"\x9D\x00\x044e\xBB\xB2\xBB",'d:a','junk' 
Now when you run the code, you will find \x9C\x00\x044\x00\x00\x00\x00 in output because it
matches filter criteria. (Refer how to run code below) 
Insert the row key causing bug: 
HBase shell command: put 'fuzzytest',"\x9C\x00\x03\xE9e\xBB{X\x1Fwts\x1F\x15vRX",'d:a','junk'

Now when you run the code, you will not find \x9C\x00\x044\x00\x00\x00\x00 in output even
though it still matches filter criteria. 
{quote}

Verified the issue on master.




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