Rohit Sinha created HBASE-15676:
-----------------------------------
Summary: FuzzyRowFilter fails and matches all the rows in the
table if the mask consists of all 0s
Key: HBASE-15676
URL: https://issues.apache.org/jira/browse/HBASE-15676
Project: HBase
Issue Type: Bug
Components: Filters
Affects Versions: 1.1.1, 1.2.0, 1.0.2, 0.98.13, 2.0.0
Reporter: Rohit Sinha
While using FuzzyRowFilter we noticed that if the mask array consists of all 0s
(fixed) the FuzzyRowFilter matches all the rows in the table. We noticed this
on HBase 1.1, 1.2 and higher.
After some digging we suspect that this is because of isPreprocessedMask()
check which is used in preprocessMask() which was added here:
https://issues.apache.org/jira/browse/HBASE-13761
If the mask consists of all 0s then the isPreprocessedMask() returns true and
the preprocessing which responsible for changing 0s to -1 doesn't happen and
hence all rows are matched in scan.
This scenario can be tested in TestFuzzyRowFilterEndToEnd#testHBASE14782() If
we change the
byte[] fuzzyKey = Bytes.toBytesBinary("\\x00\\x00\\x044");
byte[] mask = new byte[] {1,0,0,0};
to
byte[] fuzzyKey = Bytes.toBytesBinary("\\x9B\\x00\\x044e");
byte[] mask = new byte[] {0,0,0,0,0};
We expect one match but this will match all the rows in the table.
--
This message was sent by Atlassian JIRA
(v6.3.4#6332)
