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https://issues.apache.org/jira/browse/HDFS-15119?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17023045#comment-17023045
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Kihwal Lee commented on HDFS-15119:
-----------------------------------
I've committed to trunk, branch-3.2 and branch-3.1. For branch-2.10, the patch
needs a bit of change. Please post a patch for branch-2.10.
> Allow expiration of cached locations in DFSInputStream
> ------------------------------------------------------
>
> Key: HDFS-15119
> URL: https://issues.apache.org/jira/browse/HDFS-15119
> Project: Hadoop HDFS
> Issue Type: Improvement
> Components: dfsclient
> Reporter: Ahmed Hussein
> Assignee: Ahmed Hussein
> Priority: Minor
> Fix For: 3.3.0, 3.1.4, 3.2.2
>
> Attachments: HDFS-15119.001.patch, HDFS-15119.002.patch,
> HDFS-15119.003.patch
>
>
> Staleness and other transient conditions can affect reads for a long time
> since the block locations may not be re-fetched. It makes sense to make
> cached locations to expire.
> For example, we may not take advantage of local-reads since the nodes are
> blacklisted and have not been updated.
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