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https://issues.apache.org/jira/browse/HDFS-15377?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17119225#comment-17119225
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Hadoop QA commented on HDFS-15377:
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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 8s{color}
| {color:red} HDFS-15377 does not apply to trunk. Rebase required? Wrong
Branch? See https://wiki.apache.org/hadoop/HowToContribute for help. {color} |
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|| Subsystem || Report/Notes ||
| JIRA Issue | HDFS-15377 |
| JIRA Patch URL |
https://issues.apache.org/jira/secure/attachment/13004298/HDFS-15377.003.patch |
| Console output |
https://builds.apache.org/job/PreCommit-HDFS-Build/29382/console |
| versions | git=2.17.1 |
| Powered by | Apache Yetus 0.12.0 https://yetus.apache.org |
This message was automatically generated.
> BlockScanner scans one part per round, expect full scans after several rounds
> -----------------------------------------------------------------------------
>
> Key: HDFS-15377
> URL: https://issues.apache.org/jira/browse/HDFS-15377
> Project: Hadoop HDFS
> Issue Type: Improvement
> Reporter: Yang Yun
> Assignee: Yang Yun
> Priority: Minor
> Attachments: HDFS-15377.002.patch, HDFS-15377.003.patch
>
>
> For reducing disk IO, one block is separated to multiple parts, BlockScanner
> scans only one part per round. Expect that after several rounds, the full
> block should be scanned
> Add a new option "dfs.block.scanner.part.size". the maximum data size per
> scan by the block scanner. this value should be the multiple of chunk size,
> for example, 512, 1024, 4096 ...
> Default value is -1, will disable partial scan.
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