wenhao created HBASE-27928:
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Summary: listTableNames has different criteria for judging the
regular matching of tables in the default library
Key: HBASE-27928
URL: https://issues.apache.org/jira/browse/HBASE-27928
Project: HBase
Issue Type: Bug
Components: Admin
Affects Versions: 2.0.0
Reporter: wenhao
There are the following tables under default: order_info, test123
When I execute the following logic (get the table that starts with test),
test123 is returned
{code:java}
String tableNameRegex = "^(test).*";
TableName[] tns = admin.listTableNames(Pattern.compile(tableNameRegex));{code}
When I execute the following logic (get a table that doesn't start with test),
the return is order_info, test123
{code:java}
String tableNameRegex = "^(?!test).*";
TableName[] tns = admin.listTableNames(Pattern.compile(tableNameRegex));{code}
As you can see, table test123 is returned both times.
When I look at the source code, I find that when I perform a regular match for
the table in the default namespace, I perform one step more judgment, resulting
in a table starting with test being returned both times.
{code:java}
boolean matched = pattern.matcher(tableName).matches();
if (!matched && htd.getTableName().getNamespaceAsString().equals(defaultNS)) {
matched = pattern.matcher(defaultNS + TableName.NAMESPACE_DELIM +
tableName).matches();
}{code}
I think there are problems with this regular matching logic
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