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https://issues.apache.org/jira/browse/HBASE-10322?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Anoop Sam John updated HBASE-10322:
-----------------------------------
Resolution: Fixed
Release Note:
Added a new config hbase.replication.rpc.codec, using which one can specify the
codec to be used by the replication. This config don't have a default value.
When it is not specified, the codec specified by hbase.client.rpc.codec config
will be used for replication.(For which
org.apache.hadoop.hbase.codec.KeyValueCodec is the default value)
Note : When using tags directly or indirectly (ie. Usage of cell level
visibility labels or per cell ACL) make sure to configure
hbase.replication.rpc.codec with a Codec which supports shipping of tags. We
have org.apache.hadoop.hbase.codec.KeyValueCodecWithTags and
org.apache.hadoop.hbase.codec.CellCodecWithTags, which can handle tags.
Hadoop Flags: Reviewed
Status: Resolved (was: Patch Available)
Thanks alot all for helping us to arrive at a conclusion.
> Strip tags from KV while sending back to client on reads
> --------------------------------------------------------
>
> Key: HBASE-10322
> URL: https://issues.apache.org/jira/browse/HBASE-10322
> Project: HBase
> Issue Type: Bug
> Affects Versions: 0.98.0
> Reporter: Anoop Sam John
> Assignee: Anoop Sam John
> Priority: Blocker
> Fix For: 0.98.0, 0.99.0
>
> Attachments: HBASE-10322.patch, HBASE-10322_V2.patch,
> HBASE-10322_V3.patch, HBASE-10322_V4.patch, HBASE-10322_V5.patch,
> HBASE-10322_V6.patch, HBASE-10322_codec.patch
>
>
> Right now we have some inconsistency wrt sending back tags on read. We do
> this in scan when using Java client(Codec based cell block encoding). But
> during a Get operation or when a pure PB based Scan comes we are not sending
> back the tags. So any of the below fix we have to do
> 1. Send back tags in missing cases also. But sending back visibility
> expression/ cell ACL is not correct.
> 2. Don't send back tags in any case. This will a problem when a tool like
> ExportTool use the scan to export the table data. We will miss exporting the
> cell visibility/ACL.
> 3. Send back tags based on some condition. It has to be per scan basis.
> Simplest way is pass some kind of attribute in Scan which says whether to
> send back tags or not. But believing some thing what scan specifies might not
> be correct IMO. Then comes the way of checking the user who is doing the
> scan. When a HBase super user doing the scan then only send back tags. So
> when a case comes like Export Tool's the execution should happen from a super
> user.
> So IMO we should go with #3.
> Patch coming soon.
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