Jagadesh Kiran N created HDFS-8159:
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Summary: [HDFS-Quota] Verification is not done while setting dir
namequota and size
Key: HDFS-8159
URL: https://issues.apache.org/jira/browse/HDFS-8159
Project: Hadoop HDFS
Issue Type: Improvement
Components: HDFS
Affects Versions: 2.6.0
Environment: Suse 11 SP3
Reporter: Jagadesh Kiran N
Priority: Minor
Name Quota and space quota is not verifying when setting a new value to a
directory which already has subdirectories or contents.
Below are the steps to re-produce the cases:
*+Case-1+*
Step-1) Create a New folder
hdfs dfs -mkdir /test
Step-2) Create sub folders
hdfs dfs -mkdir /test/one
hdfs dfs -mkdir /test/two
hdfs dfs -mkdir /test/three
Step-3) Set Name Quota as two
hdfs dfsadmin -setQuota 2 /test
Step-3) Quota will be set with out the validating the dirs
+Output:+ Eventhough name quota value is lower than the existing number of
dirs, its not validating and allowing to set the new value.
+Suggestion:+ Validate the name quota against the number of contents before
setting the new value.
*+Case-2+*
Step-1) Add any new folder or file , it will give error message
mkdir: The NameSpace quota (directories and files) of directory /test is
exceeded: quota=2 file count=5
Step-2) Clear the Quota
hdfs dfsadmin -clrQuota /test
Step-3) Now Set the Size less than the folder size
hdfs dfsadmin -setSpaceQuota 10 /test
+Output:+ Eventhough space quota value is less than the size of the existing
dir contents, its not validating and allowing to set the new value.
+Suggestion:+ Validate the quota against the used space before setting the new
value.
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