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From Íñigo Goiri (Jira) <j...@apache.org>
Subject [jira] [Updated] (HDFS-14756) RBF: getQuotaUsage may ignore some folders
Date Wed, 21 Aug 2019 16:41:00 GMT

     [ https://issues.apache.org/jira/browse/HDFS-14756?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Íñigo Goiri updated HDFS-14756:
-------------------------------
    Fix Version/s: 3.3.0
     Hadoop Flags: Reviewed
       Resolution: Fixed
           Status: Resolved  (was: Patch Available)

> RBF: getQuotaUsage may ignore some folders
> ------------------------------------------
>
>                 Key: HDFS-14756
>                 URL: https://issues.apache.org/jira/browse/HDFS-14756
>             Project: Hadoop HDFS
>          Issue Type: Sub-task
>            Reporter: Chen Zhang
>            Assignee: Chen Zhang
>            Priority: Major
>             Fix For: 3.3.0
>
>         Attachments: HDFS-14756.001.patch, HDFS-14756.002.patch
>
>
> {{getValidQuotaLocations}} want to filter duplicate subfolders, but it used wrong method
to determine the parent folder. In this logic, if we have 2 mountpoint like /miui and /miuiads,
then /miuiads will be ignored.
> {code:java}
> private List<RemoteLocation> getValidQuotaLocations(String path)
>     throws IOException {
>   final List<RemoteLocation> locations = getQuotaRemoteLocations(path);
>   // NameService -> Locations
>   ListMultimap<String, RemoteLocation> validLocations =
>       ArrayListMultimap.create();
>   for (RemoteLocation loc : locations) {
>     final String nsId = loc.getNameserviceId();
>     final Collection<RemoteLocation> dests = validLocations.get(nsId);
>     // Ensure the paths in the same nameservice is different.
>     // Do not include parent-child paths.
>     boolean isChildPath = false;
>     for (RemoteLocation d : dests) {
>       if (StringUtils.startsWith(loc.getDest(), d.getDest())) {
>         isChildPath = true;
>         break;
>       }
>     }
>     if (!isChildPath) {
>       validLocations.put(nsId, loc);
>     }
>   }
>   return Collections
>       .unmodifiableList(new ArrayList<>(validLocations.values()));
> }
> {code}



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