[jira] [Created] (BEAM-11735) Loggin from DoFn doesn't work with Spark Runner in cluster mode

["Claudio Venturini (Jira)" <ji...@apache.org>]

Claudio Venturini created BEAM-11735:
----------------------------------------

             Summary: Loggin from DoFn doesn't work with Spark Runner in cluster mode
                 Key: BEAM-11735
                 URL: https://issues.apache.org/jira/browse/BEAM-11735
             Project: Beam
          Issue Type: Bug
          Components: runner-spark, sdk-java-core
    Affects Versions: 2.27.0, 2.26.0
         Environment: Cloudera 6, Hadoop 3, Spark 2.4
            Reporter: Claudio Venturini


Log messages emitted by any DoFn is not logged by spark executors when the pipeline is run with Spark in cluster deployment mode (on YARN). Tested on Cloudera 6 with Spark 2.4.

I made a test project to reproduce the issue: https://github.com/ventuc/beam-log-test. Run it with:

{{spark-submit --class beam.tests.log.LogTesting --name LogTesting --deploy-mode cluster --master yarn --conf "spark.driver.extraJavaOptions=-Dlog4j.configuration=[file:log4j.properties|file://log4j.properties/]" --conf "spark.executor.extraJavaOptions=-Dlog4j.configuration=[file:log4j.properties|file://log4j.properties/]" --files $HOME/log4j.properties beam-log-test-0.0.1-SNAPSHOT.jar}}

To retrieve logs from YARN run:

{{yarn logs -applicationId <app_id>}}

As you can see, logs from the beam.tests.log appear only in the driver's log, and not in the executor's log.

 

There's not any documentation about how to handle logs in Beam with the Spark runner. Please document it as requested also by https://issues.apache.org/jira/browse/BEAM-792

 



--
This message was sent by Atlassian Jira
(v8.3.4#803005)