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https://issues.apache.org/jira/browse/HDFS-16500?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17504202#comment-17504202
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Chengwei Wang commented on HDFS-16500:
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Create PR https://github.com/apache/hadoop/pull/4061
> Make asynchronous blocks deletion lock and unlock durtion threshold
> configurable
> ---------------------------------------------------------------------------------
>
> Key: HDFS-16500
> URL: https://issues.apache.org/jira/browse/HDFS-16500
> Project: Hadoop HDFS
> Issue Type: Improvement
> Components: namanode
> Reporter: Chengwei Wang
> Assignee: Chengwei Wang
> Priority: Major
> Labels: pull-request-available
> Time Spent: 10m
> Remaining Estimate: 0h
>
> I have backport the nice feature HDFS-16043 to our internal branch, it works
> well in our testing cluster.
> I think it's better to make the fields *_deleteBlockLockTimeMs_* and
> *_deleteBlockUnlockIntervalTimeMs_* configurable, so that we can control the
> lock and unlock duration.
> {code:java}
> private final long deleteBlockLockTimeMs = 500;
> private final long deleteBlockUnlockIntervalTimeMs = 100;{code}
> And we should set the default value smaller to avoid blocking other requests
> long time when deleting some large directories.
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