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https://issues.apache.org/jira/browse/HBASE-1249?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12680676#action_12680676
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Jonathan Gray commented on HBASE-1249:
--------------------------------------
(assuming real timestamps)
Get latest version of columns: [fam:col1, fam:col2, fam:col3, fam:col4]
Begin reading through Memcache...
We find col1: we add it to resultset and then remove from list of columns to
match
We find a delete for fam:col2: we remove it from the list of columns to match
We find col2: doesn't matter, not in list of columns to match
We find col1: old version, doesn't matter, not in list of cols
Open up first store file...
We find col2: old version, still doesn't matter, not in list
We find col3: add to results, remove from list of cols to match
etc...
> Rearchitecting of server, client, API, key format, etc for 0.20
> ---------------------------------------------------------------
>
> Key: HBASE-1249
> URL: https://issues.apache.org/jira/browse/HBASE-1249
> Project: Hadoop HBase
> Issue Type: Improvement
> Reporter: Jonathan Gray
> Priority: Blocker
> Fix For: 0.20.0
>
>
> To discuss all the new and potential issues coming out of the change in key
> format (HBASE-1234): zero-copy reads, client binary protocol, update of API
> (HBASE-880), server optimizations, etc...
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