Amit Sela created BEAM-744:

             Summary: A runner should be able to override KafkaIO max wait 
                 Key: BEAM-744
             Project: Beam
          Issue Type: Bug
          Components: sdk-java-extensions
            Reporter: Amit Sela
            Assignee: James Malone

KafkaIO has three "wait" properties:

{{KAFKA_POLL_TIMEOUT}} - consumer poll timeout, default: 1 second.
{{START_NEW_RECORDS_POLL_TIMEOUT}} - wait for new records inside {{start()}}, 
default: 5 seconds.
{{NEW_RECORDS_POLL_TIMEOUT}} - wait for new records inside {{start()}}, 
default: 10 msec.

[~rangadi] mentioned some of these were set to due to limitations of the 
DirectRunner, and I can add that they are now limiting the Spark runner (which 
reads in defined time frames, which may be smaller then the wait time and so 
never actually read).

This feels like defaults should be set for optimal read from Kafka, while a 
runner may override those if it needs to.

[~rangadi] also mentioned that this could be set in {{PipelineOptions}} which 
may be passed when creating the reader. 

This message was sent by Atlassian JIRA

Reply via email to