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https://issues.apache.org/jira/browse/HBASE-28528?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17838051#comment-17838051
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Wellington Chevreuil commented on HBASE-28528:
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Thanks for the follow up, [~rajeshbabu]. I have some thoughts:
{quote}
Currently hfile prefetch on open is configurable cluster wise. Would be better
to make it table wise configurable.
{quote}
Yeah, I think that should be helpful. Right now, the closest we have to this
would be to disable BLOCKCACHE entirely in the CF config (see HBASE-28217).
{quote}
Also would be better to have region filters which can allow to specify which
regions data can be prefetched.
{quote}
That's interesting indeed, however it would be a bit more sophisticated, as
regions are a dynamic structure. I guess this would require an additional
qualifier in the meta table and then additional API/shell commands to set this.
> Improvements in HFile prefetch
> ------------------------------
>
> Key: HBASE-28528
> URL: https://issues.apache.org/jira/browse/HBASE-28528
> Project: HBase
> Issue Type: Improvement
> Reporter: Rajeshbabu Chintaguntla
> Assignee: Rajeshbabu Chintaguntla
> Priority: Major
>
> Currently hfile prefetch on open is configurable cluster wise. Would be
> better to make it table wise configurable. Also would be better to have
> region filters which can allow to specify which regions data can be
> prefetched. This will be useful when there are hot regions whose data
> prefetching can help for low latency requirements.
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