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From "Tokayer, Jason M." <Jason.Toka...@capitalone.com>
Subject Re: Hbase ACL
Date Wed, 04 May 2016 12:32:40 GMT
Hi Ram,

Unfortunately, that configuration doesn’t seem to help. I’ve pasted my
config followed by the CLI commands I’ve been running so that the issue
can be reproduced.


CONFIG:
<property>
  <name>hbase.security.authentication</name>
  <value>simple</value>
</property>
<property>
  <name>hbase.security.authorization</name>
  <value>true</value>
</property>
<property>
    <name>hbase.security.access.early_out</name>
    <value>false</value>
</property>
<property>
  <name>hbase.coprocessor.master.classes</name>
  
<value>org.apache.hadoop.hbase.security.access.AccessController,org.apache.
hadoop.hbase.security.visibility.VisibilityController</value>
</property>
<property>
  <name>hbase.coprocessor.region.classes</name>
  
<value>org.apache.hadoop.hbase.security.access.AccessController,org.apache.
hadoop.hbase.security.visibility.VisibilityController</value>
</property>
<property>
  <name>hbase.coprocessor.regionserver.classes</name>
  
<value>org.apache.hadoop.hbase.security.access.AccessController,org.apache.
hadoop.hbase.security.visibility.VisibilityController$VisibilityReplication
</value>
</property>



CLI COMMANDS:

Superuser:
create_namespace 'ns1'
create 'ns1:t1','cf1'
grant 'userX','RW','ns1:t1'


userX:
put 'ns1:t1', 'r2', 'cf1:q1', 'v1',1462364682267
put 'ns1:t1', 'r2', 'cf1:q2', 'v2',1462364700012

Superuser:
grant 'ns1:t1', {'userX' => 'R' }, { COLUMNS => 'cf1', FILTER =>
"(PrefixFilter ('r2'))" }

userX:
put 'ns1:t1', 'r2', 'cf1:q1', 'v2',1462364682267 #WORKS, BUT SHOULD IT???



Any help/guidance you can provide will be greatly appreciated.

-- 
Warmest Regards,
Jason Tokayer, PhD



On 5/3/16, 2:30 PM, "ramkrishna vasudevan"
<ramkrishna.s.vasudevan@gmail.com> wrote:

>I think reading the code - there should be no change between the version
>that you are using and the trunk version.
>
>Set this property to false
>'hbase.security.access.early_out' and try once.
>Tomorrow early in the morning I will try out some test case and will
>revert
>back to you.
>Do let me know if the above config works for you.
>
>Regards
>Ram
>
>On Tue, May 3, 2016 at 11:27 PM, Tokayer, Jason M. <
>Jason.Tokayer@capitalone.com> wrote:
>
>> Hi Ram,
>>
>> We are using 1.1.2, but can update to most recent if the desired feature
>> is provided. We do set authorization to true, and I can confirm that I
>>can
>> block writes to the entire table for user-X. But, it that when I grant
>>RW
>> permission (to user-X) on a table and R only on a specific cell in that
>> table then user-X can still write to that cell. This indicates to me
>>that
>> table/cf ACLs are given preference over cell ACLs.
>>
>> Have there been significant upgrades to this particular feature since
>> v1.1.2? Would you recommend attempting an upgrade, or do you think the
>> issue is still present in trunk? Can you verify via tests that
>> CHECK_CELL_DEFAULT is (a) used by default and (b) is working properly? I
>> don¹t see any unit tests in the codebase for this feature.
>>
>> --
>> Warmest Regards,
>> Jason Tokayer, PhD
>>
>>
>>
>> On 5/3/16, 1:41 PM, "ramkrishna vasudevan"
>> <ramkrishna.s.vasudevan@gmail.com> wrote:
>>
>> >Hi Jason
>> >Which version of HBase are you using?
>> >
>> >Atleast in trunk I could see that
>>'OP_ATTRIBUTE_ACL_STRATEGY_CELL_FIRST'
>> >is
>> >not used rather by default CHECK_CELL_DEFAULT strategy is what getting
>> >used
>> >now.
>> >
>> >Ensure that 'hbase.security.authorization' is set to true in
>> >hbase-site.xml. If you could tell the version you are using can be much
>> >more specific.
>> >
>> >Regards
>> >Ram
>> >
>> >On Tue, May 3, 2016 at 6:22 PM, Tokayer, Jason M. <
>> >Jason.Tokayer@capitalone.com> wrote:
>> >
>> >> I am working on Hbase ACLs in order to lock a particular cell value
>>for
>> >> writes by a user for an indefinite amount of time. This same user
>>will
>> >>be
>> >> writing to Hbase during normal program execution, and he needs to be
>> >>able
>> >> to continue to write to other cells during the single cell lock
>>period.
>> >> I¹ve been experimenting with simple authentication (i.e. No
>>Kerberos),
>> >>and
>> >> the plan is to extend to a Kerberized cluster once I get this
>>working.
>> >>
>> >> First, I am able to grant Œuser-X¹ read and write permissions to a
>> >> particular namespace. In this way user-X can write to any Hbase
>>table in
>> >> that namespace during normal execution. What I need to be able to do
>> >>next
>> >> is to set user-X¹s permissions on a particular cell to read only and
>> >>have
>> >> that take precedence over the table permissions. I found a parameter
>>in
>> >>the
>> >> codebase here
>> >>
>> >>
>> 
>>https://github.com/apache/hbase/blob/master/hbase-client/src/main/java/or
>> >>g/apache/hadoop/hbase/security/access/AccessControlConstants.java,
>> >> namely OP_ATTRIBUTE_ACL_STRATEGY_CELL_FIRST, that seems to allow for
>> >>this
>> >> prioritization of cell-level over table-/column-level. But I cannot
>> >>figure
>> >> out how to set this with key OP_ATTRIBUTE_ACL_STRATEGY. Is it
>>possible
>> >>to
>> >> set the strategy to cell-level prioritization, preferably in
>> >> hbase-site.xml? This feature is critical to our cell-level access
>> >>control.
>> >>
>> >> --
>> >> *Warmest Regards,*
>> >> *Jason Tokayer, PhD*
>> >>
>> >> ------------------------------
>> >>
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>>
>> ________________________________________________________
>>
>> The information contained in this e-mail is confidential and/or
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>> solely in performance of work or services for Capital One. The
>>information
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________________________________________________________

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