[GitHub] merlimat opened a new pull request #3157: Refactored PulsarRecordCursor to avoid intermediate thread

[GitBox <gi...@apache.org>]

merlimat opened a new pull request #3157: Refactored PulsarRecordCursor to avoid intermediate thread
URL: https://github.com/apache/pulsar/pull/3157
 
 
   ### Motivation
   
   Refactor the `PulsarRecordCursor` to avoid intermediate thread to deserialize the batch into messages. Instead, trigger that directly from the Presto split thread.
   
   This has few advantages: 
    * Less context switches in the data path
    * Less number of objects active: just break down 1 single batch at a time.
    * Object for individual messages are requested and released to pool from a single thread, leading to more efficient pooling.

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