[jira] [Created] (BEAM-2056) Add tests for exporting Beam Metrics to Flink Metrics

["Aljoscha Krettek (JIRA)" <ji...@apache.org>]

Aljoscha Krettek created BEAM-2056:
--------------------------------------

             Summary: Add tests for exporting Beam Metrics to Flink Metrics
                 Key: BEAM-2056
                 URL: https://issues.apache.org/jira/browse/BEAM-2056
             Project: Beam
          Issue Type: Improvement
          Components: runner-flink
            Reporter: Aljoscha Krettek
            Assignee: Aljoscha Krettek
             Fix For: First stable release


There are currently no tests that verify that metrics that are reported using the Beam Metrics API are forwarded to Flink and a {{MetricReporter}}.

A test for this would have to manually configure a Flink "Mini Cluster", as in
{code}
// start also a re-usable Flink mini cluster
flink = new LocalFlinkMiniCluster(getFlinkConfiguration(), false);
flink.start();
flinkPort = flink.getLeaderRPCPort();
{code}

with {{getFlinkConfiguration()}}:
{code}
protected static Configuration getFlinkConfiguration() {
    Configuration flinkConfig = new Configuration();
    flinkConfig.setInteger(ConfigConstants.LOCAL_NUMBER_TASK_MANAGER, 1);
    flinkConfig.setInteger(ConfigConstants.TASK_MANAGER_NUM_TASK_SLOTS, 8);
    flinkConfig.setInteger(ConfigConstants.TASK_MANAGER_MEMORY_SIZE_KEY, 16);
    flinkConfig.setString(ConfigConstants.RESTART_STRATEGY_FIXED_DELAY_DELAY, "0 s");
    flinkConfig.setString(ConfigConstants.METRICS_REPORTERS_LIST, "my_reporter");
    flinkConfig.setString(ConfigConstants.METRICS_REPORTER_PREFIX + "my_reporter." + ConfigConstants.METRICS_REPORTER_CLASS_SUFFIX, MyTestReporter.class.getName());
    return flinkConfig;
}
{code}

where {{MyTestReporter}} is a {{MetricReporter}} that stores metrics being reported to it so we can verify that they are there after the job finishes.

Running a Pipeline on the mini cluster should be possible by specifying "localhost" and the port we received as a cluster endpoint.



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