[
https://issues.apache.org/jira/browse/HADOOP-15891?focusedWorklogId=478089&page=com.atlassian.jira.plugin.system.issuetabpanels:worklog-tabpanel#worklog-478089
]
ASF GitHub Bot logged work on HADOOP-15891:
-------------------------------------------
Author: ASF GitHub Bot
Created on: 02/Sep/20 19:44
Start Date: 02/Sep/20 19:44
Worklog Time Spent: 10m
Work Description: umamaheswararao commented on pull request #2185:
URL: https://github.com/apache/hadoop/pull/2185#issuecomment-685957079
Hi @JohnZZGithub, I got few other points to discuss.
1. We have exposed getMountPoints API. It seems we can't return any mount
points from REGEX based because you would not know until you got src paths to
resolve and find real target fs. What should we do for this API?
2. Other API is getDelegationTokenIssuers. Applications like YARN uses this
API to get all child fs delegation tokens. This also will not work for REGEX
based mount points.
3. Other question is how this child filesystem objects gets closed. There
was an issue with [ViewFileSystem#close |
https://issues.apache.org/jira/browse/HADOOP-15565 ]. I would like to know how
that get addressed in this case as don't keep anything in InnerCache.
Sorry for bringing this points late, but they just got popped up in my mind.
----------------------------------------------------------------
This is an automated message from the Apache Git Service.
To respond to the message, please log on to GitHub and use the
URL above to go to the specific comment.
For queries about this service, please contact Infrastructure at:
[email protected]
Issue Time Tracking
-------------------
Worklog Id: (was: 478089)
Time Spent: 2h 40m (was: 2.5h)
> 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: 2h 40m
> 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.
--
This message was sent by Atlassian Jira
(v8.3.4#803005)
---------------------------------------------------------------------
To unsubscribe, e-mail: [email protected]
For additional commands, e-mail: [email protected]
