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From "Jason Gustafson (JIRA)" <j...@apache.org>
Subject [jira] [Created] (KAFKA-8717) Use cached hw/lso offset metadata when reading from log
Date Thu, 25 Jul 2019 23:51:00 GMT
Jason Gustafson created KAFKA-8717:
--------------------------------------

             Summary: Use cached hw/lso offset metadata when reading from log
                 Key: KAFKA-8717
                 URL: https://issues.apache.org/jira/browse/KAFKA-8717
             Project: Kafka
          Issue Type: Improvement
            Reporter: Jason Gustafson
            Assignee: Jason Gustafson


The broker caches log offset metadata (e.g. segment position) for the high watermark and last
stable offset in order to avoid additional index lookups when handling fetches. Currently
this metadata is only used when determining delayed fetch satisfaction. We can also use it
when reading from the log in order to avoid additional redundant index lookups.



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