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https://issues.apache.org/jira/browse/HADOOP-17028?focusedWorklogId=479029&page=com.atlassian.jira.plugin.system.issuetabpanels:worklog-tabpanel#worklog-479029
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ASF GitHub Bot logged work on HADOOP-17028:
-------------------------------------------
Author: ASF GitHub Bot
Created on: 04/Sep/20 09:18
Start Date: 04/Sep/20 09:18
Worklog Time Spent: 10m
Work Description: hadoop-yetus commented on pull request #2260:
URL: https://github.com/apache/hadoop/pull/2260#issuecomment-687030524
:broken_heart: **-1 overall**
| Vote | Subsystem | Runtime | Comment |
|:----:|----------:|--------:|:--------|
| +0 :ok: | reexec | 0m 0s | Docker mode activated. |
| -1 :x: | patch | 0m 4s | https://github.com/apache/hadoop/pull/2260
does not apply to trunk. Rebase required? Wrong Branch? See
https://wiki.apache.org/hadoop/HowToContribute for help. |
| Subsystem | Report/Notes |
|----------:|:-------------|
| GITHUB PR | https://github.com/apache/hadoop/pull/2260 |
| Console output |
https://ci-hadoop.apache.org/job/hadoop-multibranch/job/PR-2260/4/console |
| versions | git=2.17.1 |
| Powered by | Apache Yetus 0.13.0-SNAPSHOT https://yetus.apache.org |
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Issue Time Tracking
-------------------
Worklog Id: (was: 479029)
Time Spent: 1h 20m (was: 1h 10m)
> ViewFS should initialize target filesystems lazily
> --------------------------------------------------
>
> Key: HADOOP-17028
> URL: https://issues.apache.org/jira/browse/HADOOP-17028
> Project: Hadoop Common
> Issue Type: Bug
> Components: client-mounts, fs, viewfs
> Affects Versions: 3.2.1
> Reporter: Uma Maheswara Rao G
> Assignee: Abhishek Das
> Priority: Major
> Labels: pull-request-available
> Time Spent: 1h 20m
> Remaining Estimate: 0h
>
> Currently viewFS initialize all configured target filesystems when
> viewfs#init itself.
> Some target file system initialization involve creating heavy objects and
> proxy connections. Ex: DistributedFileSystem#initialize will create DFSClient
> object which will create proxy connections to NN etc.
> For example: if ViewFS configured with 10 target fs with hdfs uri and 2
> targets with s3a.
> If one of the client only work with s3a target, But ViewFS will initialize
> all targets irrespective of what clients interested to work with. That means,
> here client will create 10 DFS initializations and 2 s3a initializations. Its
> unnecessary to have DFS initialization here. So, it will be a good idea to
> initialize the target fs only when first time usage call come to particular
> target fs scheme.
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