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https://issues.apache.org/jira/browse/HBASE-631?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12611386#action_12611386
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stack commented on HBASE-631:
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Patch looks good (especially the unit test additions).
Couple of comments/questions:
+ So, if a user adds a cell at row/columnfamily name -- i.e. if row is x and
column family is y:, at x/y: -- they can use get to extract that explicit cell
but if they use x/y: with getFull/getRow, the behavior will be different;
instead they will get the explicit x/y: cell AND all other cells that might on
the 'y:' column family such y:1, y:2, etc. I think this is OK.
+ I was wondering if the code below:
{code}
+ if(columns != null) {
+ for (byte[] bs : columns) {
+ if(Bytes.toString(bs).split(":").length == 1) {
+ HStore store = stores.get(Bytes.mapKey(HStoreKey.getFamily(bs)));
+ store.getFull(key, null, result);
+ }
+ }
{code}
...should be integrated with the code above it? If only a column family
specified, pass null to the store.getFull?
> HTable.getRow() for only a column family
> ----------------------------------------
>
> Key: HBASE-631
> URL: https://issues.apache.org/jira/browse/HBASE-631
> Project: Hadoop HBase
> Issue Type: New Feature
> Affects Versions: 0.1.2
> Reporter: Ryan Lynch
> Assignee: Jean-Daniel Cryans
> Attachments: hbase-631-v1.patch
>
>
> I have a use case in which we want to access all the columns for a supplied
> column family while also avoiding the overhead of reading any other column
> families. There seems to be no method for doing this but doing a quick dive
> into the code it "seems" like this should be relatively easy to allow. This
> seems desirable since the architecture describes column families being stored
> together so reading only a single column family should be a lighter operation.
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