[
https://issues.apache.org/jira/browse/HADOOP-17998?focusedWorklogId=680144&page=com.atlassian.jira.plugin.system.issuetabpanels:worklog-tabpanel#worklog-680144
]
ASF GitHub Bot logged work on HADOOP-17998:
-------------------------------------------
Author: ASF GitHub Bot
Created on: 11/Nov/21 04:14
Start Date: 11/Nov/21 04:14
Worklog Time Spent: 10m
Work Description: smarthanwang opened a new pull request #3645:
URL: https://github.com/apache/hadoop/pull/3645
### Description
CopyFromLocal/Put is enabled to run with multi-thread with HDFS-11786 and
HADOOP-14698, and make put dirs or multiple files faster.So, It's necessary to
enable get and copyToLocal command run with multi-thread.
### Tests
Test case: 1 dir 240 files 13G
**1. Get with single thread.**
```
time hadoop fs -get /tmp/data/20211101 .
real 6m28.785s
user 0m18.844s
sys 0m44.953s
```
**2. Get with 10 threads.**
```
time hadoop fs -get -t 10 /tmp/data/20211101 .
real 0m58.721s
user 0m21.386s
sys 0m54.066s
```
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Issue Time Tracking
-------------------
Worklog Id: (was: 680144)
Remaining Estimate: 0h
Time Spent: 10m
> Enable get command run with multi-thread
> ----------------------------------------
>
> Key: HADOOP-17998
> URL: https://issues.apache.org/jira/browse/HADOOP-17998
> Project: Hadoop Common
> Issue Type: Improvement
> Components: fs
> Affects Versions: 3.3.1
> Reporter: Chengwei Wang
> Priority: Major
> Attachments: HADOOP-17998.001.patch, HADOOP-17998.002.patch
>
> Time Spent: 10m
> Remaining Estimate: 0h
>
> CopyFromLocal/Put is enabled to run with multi-thread with HDFS-11786 and
> HADOOP-14698， and make put dirs or multiple files faster.
> So, It's necessary to enable get and copyToLocal command run with
> multi-thread.
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