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Date: Mon, 16 Oct 2017 19:59:00 +0000 (UTC)
From: "Wei-Chiu Chuang (JIRA)" <jira@apache.org>
To: hdfs-issues@hadoop.apache.org
Message-ID: <JIRA.13103102.1505774571000.10062.1508183940339@Atlassian.JIRA>
In-Reply-To: <JIRA.13103102.1505774571000@Atlassian.JIRA>
References: <JIRA.13103102.1505774571000@Atlassian.JIRA> <JIRA.13103102.1505774571748@jira-lw-us.apache.org>
Subject: [jira] [Updated] (HDFS-12485) expunge may fail to remove trash from
 encryption zone
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archived-at: Mon, 16 Oct 2017 19:59:05 -0000


     [ https://issues.apache.org/jira/browse/HDFS-12485?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Wei-Chiu Chuang updated HDFS-12485:
-----------------------------------
    Summary: expunge may fail to remove trash from encryption zone  (was: expunge may not remove trash from encryption zone)

> expunge may fail to remove trash from encryption zone
> -----------------------------------------------------
>
>                 Key: HDFS-12485
>                 URL: https://issues.apache.org/jira/browse/HDFS-12485
>             Project: Hadoop HDFS
>          Issue Type: Bug
>    Affects Versions: 2.8.0, 3.0.0-alpha1
>            Reporter: Wei-Chiu Chuang
>            Assignee: Wei-Chiu Chuang
>         Attachments: HDFS-12485.001.patch
>
>
> This is related to HDFS-12484, but turns out that even if I have super user permission, -expunge may not remove trash either.
> If I log into Linux as root, and then login as the superuser hdfs@EXAMPLE.COM
> {noformat}
> [root@nightly511-1 ~]# hdfs dfs -rm /scale/b
> 17/09/18 15:21:32 INFO fs.TrashPolicyDefault: Moved: 'hdfs://ns1/scale/b' to trash at: hdfs://ns1/scale/.Trash/hdfs/Current/scale/b
> [root@nightly511-1 ~]# hdfs dfs -expunge
> 17/09/18 15:21:59 INFO fs.TrashPolicyDefault: TrashPolicyDefault#deleteCheckpoint for trashRoot: hdfs://ns1/user/hdfs/.Trash
> 17/09/18 15:21:59 INFO fs.TrashPolicyDefault: TrashPolicyDefault#deleteCheckpoint for trashRoot: hdfs://ns1/user/hdfs/.Trash
> 17/09/18 15:21:59 INFO fs.TrashPolicyDefault: Deleted trash checkpoint: /user/hdfs/.Trash/170918143916
> 17/09/18 15:21:59 INFO fs.TrashPolicyDefault: TrashPolicyDefault#createCheckpoint for trashRoot: hdfs://ns1/user/hdfs/.Trash
> [root@nightly511-1 ~]# hdfs dfs -ls hdfs://ns1/scale/.Trash/hdfs/Current/scale/b
> -rw-r--r--   3 hdfs systest          0 2017-09-18 15:21 hdfs://ns1/scale/.Trash/hdfs/Current/scale/b
> {noformat}
> expunge does not remove trash under /scale, because it does not know I am 'hdfs' user.
> {code:title=DistributedFileSystem#getTrashRoots}
> Path ezTrashRoot = new Path(it.next().getPath(),
>             FileSystem.TRASH_PREFIX);
>         if (!exists(ezTrashRoot)) {
>           continue;
>         }
>         if (allUsers) {
>           for (FileStatus candidate : listStatus(ezTrashRoot)) {
>             if (exists(candidate.getPath())) {
>               ret.add(candidate);
>             }
>           }
>         } else {
>           Path userTrash = new Path(ezTrashRoot, System.getProperty(
>               "user.name")); --> bug
>           try {
>             ret.add(getFileStatus(userTrash));
>           } catch (FileNotFoundException ignored) {
>           }
>         }
> {code}
> It should use UGI for user name, rather than system login user name.


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