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https://issues.apache.org/jira/browse/HADOOP-15891?focusedWorklogId=481264&page=com.atlassian.jira.plugin.system.issuetabpanels:worklog-tabpanel#worklog-481264
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ASF GitHub Bot logged work on HADOOP-15891:
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Author: ASF GitHub Bot
Created on: 10/Sep/20 06:14
Start Date: 10/Sep/20 06:14
Worklog Time Spent: 10m
Work Description: umamaheswararao commented on pull request #2185:
URL: https://github.com/apache/hadoop/pull/2185#issuecomment-690012492
Thanks @JohnZZGithub I agree it's always better to have refactoring patch
separated to make the reviews easier.
In this case, we need to do minor refactors to follow the coding rules. I
would be happy to review your refactoring patch later if you would like to
contribute. Thanks :-)
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Issue Time Tracking
-------------------
Worklog Id: (was: 481264)
Time Spent: 8h (was: 7h 50m)
> Provide Regex Based Mount Point In Inode Tree
> ---------------------------------------------
>
> Key: HADOOP-15891
> URL: https://issues.apache.org/jira/browse/HADOOP-15891
> Project: Hadoop Common
> Issue Type: New Feature
> Components: viewfs
> Reporter: zhenzhao wang
> Assignee: zhenzhao wang
> Priority: Major
> Labels: pull-request-available
> Attachments: HADOOP-15891.015.patch, HDFS-13948.001.patch,
> HDFS-13948.002.patch, HDFS-13948.003.patch, HDFS-13948.004.patch,
> HDFS-13948.005.patch, HDFS-13948.006.patch, HDFS-13948.007.patch,
> HDFS-13948.008.patch, HDFS-13948.009.patch, HDFS-13948.011.patch,
> HDFS-13948.012.patch, HDFS-13948.013.patch, HDFS-13948.014.patch, HDFS-13948_
> Regex Link Type In Mont Table-V0.pdf, HDFS-13948_ Regex Link Type In Mount
> Table-v1.pdf
>
> Time Spent: 8h
> Remaining Estimate: 0h
>
> This jira is created to support regex based mount point in Inode Tree. We
> noticed that mount point only support fixed target path. However, we might
> have user cases when target needs to refer some fields from source. e.g. We
> might want a mapping of /cluster1/user1 => /cluster1-dc1/user-nn-user1, we
> want to refer `cluster` and `user` field in source to construct target. It's
> impossible to archive this with current link type. Though we could set
> one-to-one mapping, the mount table would become bloated if we have thousands
> of users. Besides, a regex mapping would empower us more flexibility. So we
> are going to build a regex based mount point which target could refer groups
> from src regex mapping.
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