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  1. Samza
  2. SAMZA-2299

StreamTableJoin Operator should invoke user join function only once

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    Details

    • Type: Bug
    • Status: Closed
    • Priority: Major
    • Resolution: Fixed
    • Affects Version/s: None
    • Fix Version/s: 1.3
    • Component/s: None
    • Labels:
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      Description

      In StreamTableJoinOperator, we currently invoke the user join function again with null record if the first call to join function returns a null. This is not desirable in use cases for anti-join where subsequent invocation of join function could result in different results.

       

      Optional.ofNullable(value)
        .map(val -> (R) KV.of(key, val)
        .map(record -> joinOpSpec.getJoinFn().apply(message, record))
        .orElseGet(() -> joinOpSpec.getJoinFn().apply(message, null)); // this is the additional invocation that happens if the previous invocation returns a null

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              • Assignee:
                bharathkk Bharath Kumarasubramanian
                Reporter:
                bharathkk Bharath Kumarasubramanian
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                  Updated:
                  Resolved:

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