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Details

Type: Sub-task
Status: Patch Available
Priority: Major
Resolution: Unresolved
Affects Version/s: None
Fix Version/s: None
Component/s: None
Labels:
- RBF

Description

When we delete files or dirs in hdfs, it will move the deleted files or dirs to trash by default.

But in the global path we can only mount one trash dir /user. So we mount trash dir /user of the subcluster ns1 to the global path /user. Then we can delete files or dirs of ns1, but when we delete the files or dirs of another subcluser, such as hacluster, it will be failed.

Mount Table

Global path	Target nameservice	Target path	Order	Owner	Group	Permission	Quota/Usage	Date Modified	Date Created
/test	hacluster2	/test		securedn	users	rwxr-xr-x	[NsQuota: -/-, SsQuota: -/-]	2018/11/29 14:37:42	2018/11/29 14:37:42
/tmp	hacluster1	/tmp		securedn	users	rwxr-xr-x	[NsQuota: -/-, SsQuota: -/-]	2018/11/29 14:37:05	2018/11/29 14:37:05
/user	hacluster2,hacluster1	/user	HASH	securedn	users	rwxr-xr-x	[NsQuota: -/-, SsQuota: -/-]	2018/11/29 14:42:37	2018/11/29 14:38:20

commands:

1./opt/HAcluater_ram1/install/hadoop/router/bin> ./hdfs dfs -ls /test/.
18/11/30 11:00:47 WARN util.NativeCodeLoader: Unable to load native-hadoop library for your platform... using builtin-java classes where applicable
Found 1 items
-rw-r--r-- 3 securedn supergroup 8081 2018-11-30 10:56 /test/hdfs.cmd

2./opt/HAcluater_ram1/install/hadoop/router/bin> ./hdfs dfs -ls /tmp/.
18/11/30 11:00:40 WARN util.NativeCodeLoader: Unable to load native-hadoop library for your platform... using builtin-java classes where applicable
Found 1 items
-rw-r--r--   3 securedn supergroup       6311 2018-11-30 10:57 /tmp/mapred.cmd

3../opt/HAcluater_ram1/install/hadoop/router/bin> ./hdfs dfs -rm /tmp/mapred.cmd
18/11/30 11:01:02 WARN util.NativeCodeLoader: Unable to load native-hadoop library for your platform... using builtin-java classes where applicable
rm: Failed to move to trash: hdfs://router/tmp/mapred.cmd: rename destination parent /user/securedn/.Trash/Current/tmp/mapred.cmd not found.

4./opt/HAcluater_ram1/install/hadoop/router/bin> ./hdfs dfs -rm /test/hdfs.cmd
18/11/30 11:01:20 WARN util.NativeCodeLoader: Unable to load native-hadoop library for your platform... using builtin-java classes where applicable
18/11/30 11:01:22 INFO fs.TrashPolicyDefault: Moved: 'hdfs://router/test/hdfs.cmd' to trash at: hdfs://router/user/securedn/.Trash/Current/test/hdfs.cmd