Anoop Sam John created HBASE-10322:
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Summary: 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
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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