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From "Puttaswamy (JIRA)" <j...@apache.org>
Subject [jira] [Created] (HADOOP-11503) HDFS Space Quota not working as expected
Date Thu, 22 Jan 2015 08:06:34 GMT
Puttaswamy created HADOOP-11503:
-----------------------------------

             Summary: HDFS Space Quota not working as expected
                 Key: HADOOP-11503
                 URL: https://issues.apache.org/jira/browse/HADOOP-11503
             Project: Hadoop Common
          Issue Type: Bug
          Components: fs
         Environment: CDH4.6
            Reporter: Puttaswamy


I am implementing hdfs quota in a cdh4.6 cluster .Hdfs name quota has been working properly.But
the Hdfs Space quota has not been working as expected.i.e,

I set the space quota of 500MB for a directory say /test-space-quota.

Then i put a file of 10 Mb into /test-space-quota which worked .Now the space available is
480 MB ( 500 - 10*2) where 2 is rep factor.

Then i put a file of 50Mb into /test-space-quota which worked too as expected. Now the space
available is 380 MB (480 - 50*2)

"I am checking the quota left from the command hadoop fs -count -q /test-space-quota"

Then i tried to put a file of 100 Mb . It should since it will just consume 200 Mb of space
with replication. But when i put that i got an error 

"DataStreamer Exception
org.apache.hadoop.hdfs.protocol.DSQuotaExceededException: The DiskSpace quota of /test is
exceeded: quota = 524288000 B = 500 MB but diskspace consumed = 662700032 B = 632 MB"

But the quota says

hadoop fs -count -q /test-space-quota
        none             inf       524288000       398458880            1            2   
       62914560 /test-space-quota

Could you please help on this?



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