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https://issues.apache.org/jira/browse/HDFS-6783?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Yi Liu updated HDFS-6783:
-------------------------
Attachment: HDFS-6783.002.patch
The new patch uses a simple approach to distinguish these two kinds of
{{rescan}}.
> Fix not really wait for rescan in HDFS CacheReplicationModitor
> --------------------------------------------------------------
>
> Key: HDFS-6783
> URL: https://issues.apache.org/jira/browse/HDFS-6783
> Project: Hadoop HDFS
> Issue Type: Bug
> Components: caching
> Affects Versions: 3.0.0
> Reporter: Yi Liu
> Assignee: Yi Liu
> Attachments: HDFS-6783.001.patch, HDFS-6783.002.patch
>
>
> In monitor thread, needsRescan is set to false before real scan starts, so
> for {{waitForRescanIfNeeded}} will return for the first condition:
> {code}
> if (!needsRescan) {
> return;
> }
> {code}
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