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https://issues.apache.org/jira/browse/HBASE-25246?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17243181#comment-17243181
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Viraj Jasani commented on HBASE-25246:
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[~anoop.hbase] has raised some concerns for client side cellblock support.
After this change, even though client which does not support codec (e.g either
non-Java client or client with disabled codec), we will still return tags.
[~shahrs87] can you once try to validate this usecase in simple Get/Scan APIs
from client side? I know you have already used
"-Dhbase.client.rpc.codec=org.apache.hadoop.hbase.codec.KeyValueCodecWithTags"
for Export tests, however a couple of client side tests confirming these two
use-cases will be really helpful.
# With KeyValueCodecWithTags, we return all tags in response
# With default KeyValueCodec, we don't return any tag in response
If we still have slight doubt, let me revert commits from branch-2.4 at least
so as to unblock 2.4.0 RC. Sorry [~apurtell] if you have to sink RC0 for this
reason (I think there is one more obstacle HBASE-25352 for RC it seems, I am
yet to look into it).
> Backup/Restore hbase cell tags.
> -------------------------------
>
> Key: HBASE-25246
> URL: https://issues.apache.org/jira/browse/HBASE-25246
> Project: HBase
> Issue Type: Improvement
> Components: backup&restore
> Reporter: Rushabh Shah
> Assignee: Rushabh Shah
> Priority: Major
> Fix For: 3.0.0-alpha-1, 2.4.0, 2.2.7, 2.3.4
>
>
> In PHOENIX-6213 we are planning to add cell tags for Delete mutations. After
> having a discussion with hbase community via dev mailing thread, it was
> decided that we will pass the tags via an attribute in Mutation object and
> persist them to hbase via phoenix co-processor. The intention of PHOENIX-6213
> is to store metadata in Delete marker so that while running Restore tool we
> can selectively restore certain Delete markers and ignore others. For that to
> happen we need to persist these tags in Backup and retrieve them in Restore
> MR jobs (Import/Export tool).
> Currently we don't persist the tags in Backup.
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