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Posted to issues@beam.apache.org by "Mihir Borkar (Jira)" <ji...@apache.org> on 2020/05/22 20:28:00 UTC

[jira] [Created] (BEAM-10068) Modify behavior of Dynamic Destinations

Mihir Borkar created BEAM-10068:
-----------------------------------

             Summary: Modify behavior of Dynamic Destinations
                 Key: BEAM-10068
                 URL: https://issues.apache.org/jira/browse/BEAM-10068
             Project: Beam
          Issue Type: Improvement
          Components: sdk-java-core
            Reporter: Mihir Borkar


The writeDynamic() method, implementing Dynamic Destinations writes files per destination per window per pane. 

This leads to an increase in the number of files generated.

The request is as follows:

A way to make it possible for the user to modify the behavior of Dynamic Destinations to control the number of output files being produced.

a.) We can consider adding user-configurable parameters like writers per bundle, increasing number of records processed per bundle

and/or

b.) Introduce a method implementing Dynamic Destinations but more dependent on the data passing through the pipeline, instead of windows/panes.

So instead of splitting every output file into roughly the number of destinations being written to, we let the user configure how output files should be divided across destinations.

Links:

 [1] [https://beam.apache.org/releases/javadoc/2.19.0/index.html?org/apache/beam/sdk/io/FileIO.html]

[2] [https://github.com/apache/beam/blob/da9e17288e8473925674a4691d9e86252e67d7d7/sdks/java/core/src/main/java/org/apache/beam/sdk/io/FileIO.java]

 

 



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