RE: How to remove a Column Family Property

[Pankaj kr]

Thanks for the reply Ashish.

I can set EMPTY or NONE value using alter command. 
        alter 't1', {NAME => 'cf1', ENCRYPTION => ''} 
        alter 't1', {NAME => 'cf1', ENCRYPTION => 'NONE'}

But Exception will be thrown while opening the regions because 
DefaultCipherProvider has below implementation,

  @Override
  public Cipher getCipher(String name) {
    if (name.equalsIgnoreCase("AES")) {
      return new AES(this);
    }
    throw new RuntimeException("Cipher '" + name + "' is not supported by 
provider '" +
        getName() + "'");
  }

Client will keep on waiting for all regions to be enabled in table t1.

Yeah we can set it through JAVA APIs. But I am looking for HBase shell option.


Regards,
Pankaj

-----Original Message-----
From: ashish singhi 
Sent: 19 March 2015 16:33
To: Pankaj kr
Subject: RE: How to remove a Column Family Property

I think with the current code in shell it is not possible.
But You can try something by setting ENCRYPTION => ''
But here it may long time to update u can enter ctrl+c (break the operation) 
and then execute describe command you will see that ENCRYPTION is set to ''.
But you can do this from java using, HColumnDescriptor#setEncryptionType.

I don't think it will be much useful for shell to support this Ideally at 
production hbase shell is hardly used they generally use hbase client via java.
HBase shell is mainly for meant developers.

Regards
Ashish

-----Original Message-----
From: Pankaj kr [mailto:pankaj...@huawei.com] 
Sent: 19 March 2015 12:24
To: HBase User
Subject: How to remove a Column Family Property

Hi,
Suppose I have enabled encryption in a column family by setting "ENCRYPTION => 
'AES'".
Now I want to disable encryption for this column family. How to do this through 
HBase Shell?
As per alter table syntax, at column family level we can add CFs, delete CFs or 
set/modify  properties. How to remove a CFs property?

                Any help would be much appreciated.

Regards,
Pankaj