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From "Andrew Purtell (JIRA)" <j...@apache.org>
Subject [jira] Commented: (HBASE-1834) Add scoping information to KVs
Date Mon, 14 Sep 2009 04:22:57 GMT

    [ https://issues.apache.org/jira/browse/HBASE-1834?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12754817#action_12754817
] 

Andrew Purtell commented on HBASE-1834:
---------------------------------------

The main problem I had with not doing it this way is getting to column family metadata from
various places in the code, for example HLog.completeCacheFlush(). This was because I was
trying to tag HLogKeys with scope as they are written, and thus far scope information is kept
in HCD. However it doesn't have to be done that way. A replicator could look up what to do
for each KV according to information in the key. No HLogKey or KV would be tagged with any
scoping information. However byte[] compares for every KV would be more overhead than modifying
the write path to carry scope information along. 

Other options?

> Add scoping information to KVs
> ------------------------------
>
>                 Key: HBASE-1834
>                 URL: https://issues.apache.org/jira/browse/HBASE-1834
>             Project: Hadoop HBase
>          Issue Type: Sub-task
>            Reporter: Andrew Purtell
>


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