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From "ASF GitHub Bot (JIRA)" <j...@apache.org>
Subject [jira] [Work logged] (HDDS-1461) Optimize listStatus api in OzoneFileSystem
Date Wed, 15 May 2019 23:05:00 GMT

     [ https://issues.apache.org/jira/browse/HDDS-1461?focusedWorklogId=242942&page=com.atlassian.jira.plugin.system.issuetabpanels:worklog-tabpanel#worklog-242942
]

ASF GitHub Bot logged work on HDDS-1461:
----------------------------------------

                Author: ASF GitHub Bot
            Created on: 15/May/19 23:04
            Start Date: 15/May/19 23:04
    Worklog Time Spent: 10m 
      Work Description: xiaoyuyao commented on pull request #782: HDDS-1461. Optimize listStatus
api in OzoneFileSystem
URL: https://github.com/apache/hadoop/pull/782#discussion_r284485092
 
 

 ##########
 File path: hadoop-ozone/ozone-manager/src/main/java/org/apache/hadoop/ozone/om/KeyManagerImpl.java
 ##########
 @@ -1416,44 +1421,47 @@ public void createDirectory(OmKeyArgs args) throws IOException {
     try {
       metadataManager.getLock().acquireBucketLock(volumeName, bucketName);
 
 Review comment:
   this needs to be moved out of try block.
 
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Issue Time Tracking
-------------------

    Worklog Id:     (was: 242942)
    Time Spent: 1h  (was: 50m)

> Optimize listStatus api in OzoneFileSystem
> ------------------------------------------
>
>                 Key: HDDS-1461
>                 URL: https://issues.apache.org/jira/browse/HDDS-1461
>             Project: Hadoop Distributed Data Store
>          Issue Type: Sub-task
>          Components: Ozone Filesystem, Ozone Manager
>            Reporter: Lokesh Jain
>            Assignee: Lokesh Jain
>            Priority: Major
>              Labels: pull-request-available
>          Time Spent: 1h
>  Remaining Estimate: 0h
>
> Currently in listStatus we make multiple getFileStatus calls. This can be optimized
by converting to a single rpc call for listStatus.
> Also currently listStatus has to traverse a directory recursively in order to list its
immediate children. This happens because in OzoneManager all the metadata is stored in rocksdb
sorted on keynames. The Jira also aims to fix this by using seek api provided by rocksdb.



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