filter.RegexStringComparator does not work in presence of the byte 0xA
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Key: HBASE-2323
URL: https://issues.apache.org/jira/browse/HBASE-2323
Project: Hadoop HBase
Issue Type: Bug
Components: filters
Affects Versions: 0.20.3
Reporter: Benoit Sigoure
Assignee: Benoit Sigoure
I'm trying to use {{RegexStringComparator}} in conjunction with {{RowFilter}}.
One of my row keys contained the byte 0xA, which turns out to be the ASCII code
for the newline character (\n). When the row key is converted to a string in
order to use the regexp facility of the Java standard library, it becomes a
string containing two lines and my regexp does not match.
I believe the solution is to compile the regexp with the {{DOTALL}} flag.
Luckily, this flag can be "passed" by the client by prefixing the regexp with
{{(?s)}} so people working with an older version of HBase can work around this
issue without having to upgrade.
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