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https://issues.apache.org/jira/browse/ARROW-15340?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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David Li updated ARROW-15340:
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Labels: good-second-issue (was: )
> [C++] Try and fetch IPC footer in one read instead of two
> ---------------------------------------------------------
>
> Key: ARROW-15340
> URL: https://issues.apache.org/jira/browse/ARROW-15340
> Project: Apache Arrow
> Issue Type: Improvement
> Components: C++
> Reporter: Weston Pace
> Priority: Major
> Labels: good-second-issue
>
> To concisely read the IPC footer we must do two reads. First read the footer
> length and then read the footer contents.
> On high latency filesystems we can cut down some of this startup time by
> assuming the footer is going to be relatively small and reading the last ~1MB
> of the file. Then we only need to do two reads if the footer is larger.
> This means most of the time we can usually get away with 1 read at the
> expense of possibly reading more data than needed.
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