[
https://issues.apache.org/jira/browse/HDFS-1558?focusedWorklogId=484331&page=com.atlassian.jira.plugin.system.issuetabpanels:worklog-tabpanel#worklog-484331
]
ASF GitHub Bot logged work on HDFS-1558:
----------------------------------------
Author: ASF GitHub Bot
Created on: 15/Sep/20 07:01
Start Date: 15/Sep/20 07:01
Worklog Time Spent: 10m
Work Description: umamaheswararao opened a new pull request #2305:
URL: https://github.com/apache/hadoop/pull/2305
https://issues.apache.org/jira/browse/HDFS-15578
----------------------------------------------------------------
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: 484331)
Remaining Estimate: 0h
Time Spent: 10m
> Optimize FSNamesystem.startFileInternal
> ---------------------------------------
>
> Key: HDFS-1558
> URL: https://issues.apache.org/jira/browse/HDFS-1558
> Project: Hadoop HDFS
> Issue Type: Improvement
> Components: namenode, performance
> Reporter: Dmytro Molkov
> Assignee: Dmytro Molkov
> Priority: Minor
> Time Spent: 10m
> Remaining Estimate: 0h
>
> Currently on file creation inside of FSNamesystem.startFileInternal there are
> three calls to FSDirectory that are essentially the same:
> dir.exists(src)
> dir.isDir(src)
> dir.getFileInode(src)
> All of them have to fetch the inode and then do some processing on it.
> If instead we were to fetch the inode once and then do all of the processing
> on this INode object it would save us two trips through the namespace + 2
> calls to normalizePath all of which are relatively expensive.
--
This message was sent by Atlassian Jira
(v8.3.4#803005)
---------------------------------------------------------------------
To unsubscribe, e-mail: [email protected]
For additional commands, e-mail: [email protected]
