question Re: How to delete/remove storage policy ? in Archives of Support Questions (Read Only)

How to delete/remove storage policy ?

sshimpi — Thu, 07 Apr 2016 17:20:48 GMT

Hi team

From the link below, i see options to set and get storage policies on hdfs for files/dirs

https://hadoop.apache.org/docs/current/hadoop-project-dist/hadoop-hdfs/ArchivalStorage.html#Set_Storage_Policy

Also hdfs command displays -

hdfs storagepolicies --help
Can't understand command '--help'
Usage: bin/hdfs storagepolicies [COMMAND]
          [-listPolicies]
          [-setStoragePolicy -path <path> -policy <policy>]
          [-getStoragePolicy -path <path>]
          [-help <command-name>]

Can you let me know how to delete if there is any storage policy applied ?

Re: How to delete/remove storage policy ?

hosako — Thu, 07 Apr 2016 17:30:24 GMT

Unfortunately, I think can't delete (yet) due to https://issues.apache.org/jira/browse/HDFS-9534

Re: How to delete/remove storage policy ?

vxu — Thu, 07 Apr 2016 17:34:01 GMT

There is no specific 'removeStoragePolicy' command.

So what you want to do, I guess, is to get it back to the default value, right? The workaround is you could use '-setStoragePolicy' to set it to 'HOT'(default value), or you could use '-getStoragePolicy' to check the policy of the parent directory first and then use '-setStoragePolicy' to set it.

Re: How to delete/remove storage policy ?

nyakkanti — Thu, 07 Apr 2016 17:34:59 GMT

Hi Sagar, Currently I don't think there is remove storage policy function. The only way is to copy/move data to a new dir and then delete and rename the new one created.

Re: How to delete/remove storage policy ?

dineshc — Thu, 31 Aug 2017 08:26:37 GMT

@Sagar Shimpi

As we moved into 2017, we can now remove storage policy for a certain path!

hdfs storagepolicies -unsetStoragePolicy -path <path>