[jira] [Created] (LOG4J2-1749) YAML configuration ignores Flume appender attribute 'type'

["Jerry Meng (JIRA)" <ji...@apache.org>]

Jerry Meng created LOG4J2-1749:
----------------------------------

             Summary: YAML configuration ignores Flume appender attribute 'type'
                 Key: LOG4J2-1749
                 URL: https://issues.apache.org/jira/browse/LOG4J2-1749
             Project: Log4j 2
          Issue Type: Bug
          Components: Core, Flume Appender
    Affects Versions: 2.7
            Reporter: Jerry Meng


 I try to setup the Flume appender with type 'Persistent'
{code}
  Flume:
    name: foo
    type: Persistent
    compress: false
    ...
{code}
However, debug log always tells my FlumeAppender[type="null"...]

After tracking the code, I found at JsonConfiguration#processAttributes line:237 (the super class of YamlConfiguration).
{code}
...
if (!entry.getKey().equalsIgnoreCase("type")) {
    final JsonNode n = entry.getValue();
    if (n.isValueNode()) {
        attrs.put(entry.getKey(), n.asText());
    }
}
..
{code}
While invoking processAttributes, the attribute 'type' will be filtered out.

I haven't dug out the reason and in what case the attribute 'type' needs to be filtered out, but I think this might accidentally mass up appenders' configuration.





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