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https://issues.apache.org/jira/browse/HADOOP-3938?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12630410#action_12630410
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Tsz Wo (Nicholas), SZE commented on HADOOP-3938:
------------------------------------------------
> 8 , 9 : We use Long.MIN_VALUE to indicate "don't modify". This reduces quite
> a bit of similar looking code.
You could use the wrapper class Long and use null for "don't modify". i.e.
{code}
private void unprotectedSetQuota(String src, Long nsQuota, Long dsQuota)
{code}
> Quotas for disk space management
> --------------------------------
>
> Key: HADOOP-3938
> URL: https://issues.apache.org/jira/browse/HADOOP-3938
> Project: Hadoop Core
> Issue Type: New Feature
> Components: dfs
> Reporter: Robert Chansler
> Assignee: Raghu Angadi
> Fix For: 0.19.0
>
> Attachments: HADOOP-3938.patch, HADOOP-3938.patch, HADOOP-3938.patch,
> HADOOP-3938.patch, HADOOP-3938.patch, hdfs_quota_admin_guide.pdf,
> hdfs_quota_admin_guide.xml
>
>
> Directory quotas for bytes limit the number of bytes used by files in and
> below the directory. Operation is independent of name quotas (HADOOP-3187),
> but the implementation is parallel. Each file is charged according to its
> length multiplied by its intended replication factor.
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