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Status

Current state: ["Under DiscussionAccepted"]

Discussion thread:  http://apache-flink-mailing-list-archive.1008284.n3.nabble.com/DISCUSS-FLIP-112-Support-User-Defined-Metrics-for-Python-UDF-td38609.html

...

A `get_metric_group` will be added to the FunctionContext class.

class FunctionContext(object):

    """

    Used to obtain global runtime information about the context in which the

    user-defined function is executed. The information includes the metric group,

    and global job parameters, etc.

    """


    def get_metric_group(self) -> MetricGroup:

        pass

Implementation Plan

  1. Transmit metric group information from Java to Python
  2. Support define scopes and variables on Python metric group
  3. Support Counter/Gauge/Distribution metric type for Python UDF
  4. Support Meter metric type for Python UDF
  5. Support Metrics for UDTF