[jira] [Created] (KAFKA-21081) Don't allocate key and value if all we care about is the timestamp

[Chia-Ping Tsai (Jira)]

Chia-Ping Tsai created KAFKA-21081:
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             Summary: Don't allocate key and value if all we care about is the 
timestamp
                 Key: KAFKA-21081
                 URL: https://issues.apache.org/jira/browse/KAFKA-21081
             Project: Kafka
          Issue Type: Improvement
            Reporter: Chia-Ping Tsai
            Assignee: Chia-Ping Tsai


{{FileRecords.searchForTimestamp}}

{{RemoteLogManager.lookupTimestamp}}

{{RecordBatch.offsetOfMaxTimestamp}}

{{}}

Those paths don't need the key and value, so using {{skipKeyValueIterator}} is 
the better choice. However, {{skipKeyValueIterator}} is declared on 
{{MutableRecordBatch}} only, and {{FileChannelRecordBatch}} doesn't implement 
it.

{{}}

{{In short, we should move }}{{skipKeyValueIterator}}{{ to 
}}{{{}RecordBatch{}}}{{{}, make {}}}{{FileChannelRecordBatch}}{{ support it by 
delegating to }}{{{}loadFullBatch(){}}}{{{}, and replace 
{}}}{{streamingIterator}}{{ with }}{{skipKeyValueIterator}}{{ on those paths 🙂}}



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