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https://issues.apache.org/jira/browse/HBASE-12338?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15971065#comment-15971065
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Hadoop QA commented on HBASE-12338:
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| (x) *{color:red}-1 overall{color}* |
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|| Vote || Subsystem || Runtime || Comment ||
| {color:blue}0{color} | {color:blue} reexec {color} | {color:blue} 0m 0s
{color} | {color:blue} Docker mode activated. {color} |
| {color:red}-1{color} | {color:red} patch {color} | {color:red} 0m 10s {color}
| {color:red} HBASE-12338 does not apply to master. Rebase required? Wrong
Branch? See https://yetus.apache.org/documentation/0.3.0/precommit-patchnames
for help. {color} |
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|| Subsystem || Report/Notes ||
| JIRA Patch URL |
https://issues.apache.org/jira/secure/attachment/12682489/2.0-0003-Add-ScanPrefetcher-for-client-side-scanning-prefetch.patch
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| JIRA Issue | HBASE-12338 |
| Console output |
https://builds.apache.org/job/PreCommit-HBASE-Build/6466/console |
| Powered by | Apache Yetus 0.3.0 http://yetus.apache.org |
This message was automatically generated.
> Client side scanning prefetching.
> ---------------------------------
>
> Key: HBASE-12338
> URL: https://issues.apache.org/jira/browse/HBASE-12338
> Project: HBase
> Issue Type: Improvement
> Components: Client
> Affects Versions: 1.0.0, 2.0.0, 0.98.6.1
> Reporter: Yi Deng
> Assignee: Yi Deng
> Labels: prefetch, results, scanner
> Attachments:
> 0001-Add-ScanPrefetcher-for-client-side-scanning-prefetch.patch,
> 0001-ScanPrefetcher.patch,
> 2.0-0001-Add-ScanPrefetcher-for-client-side-scanning-prefetch.patch,
> 2.0-0002-Add-ScanPrefetcher-for-client-side-scanning-prefetch.patch,
> 2.0-0003-Add-ScanPrefetcher-for-client-side-scanning-prefetch.patch
>
>
> Since server side prefetching was not proved to be a good way to prefetch, we
> need to do it on client side.
> This is a wrapper class that takes any instance of `ResultScanner` as the
> underneath scanning component. The class will schedule the scanning in a
> background thread. There is a buffering queue storing prefetched results,
> whose's length is configurable. The prefetcher will release the thread if the
> queue is full and wait for results to be consumed.
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