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https://issues.apache.org/jira/browse/HDFS-13831?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16584439#comment-16584439
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Xiao Chen commented on HDFS-13831:
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+1 to the idea.
It seems Inigo added Ryan already. [~linyiqun] I also added you in the
committers role so you can do this in the future (by going to project settings
-> users and roles
> Make block increment deletion number configurable
> -------------------------------------------------
>
> Key: HDFS-13831
> URL: https://issues.apache.org/jira/browse/HDFS-13831
> Project: Hadoop HDFS
> Issue Type: Improvement
> Affects Versions: 3.1.0
> Reporter: Yiqun Lin
> Assignee: Ryan Wu
> Priority: Major
>
> When NN deletes a large directory, it will hold the write lock long time. For
> improving this, we remove the blocks in a batch way. So that other waiters
> have a chance to get the lock. But right now, the batch number is a
> hard-coded value.
> {code}
> static int BLOCK_DELETION_INCREMENT = 1000;
> {code}
> We can make this value configurable, so that we can control the frequency of
> other waiters to get the lock chance.
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