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Posted to issues@hbase.apache.org by "Doug Meil (JIRA)" <ji...@apache.org> on 2013/03/01 22:09:13 UTC
[jira] [Commented] (HBASE-7221) RowKey utility class for rowkey
construction
[ https://issues.apache.org/jira/browse/HBASE-7221?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13590941#comment-13590941 ]
Doug Meil commented on HBASE-7221:
----------------------------------
Thanks Nick, I appreciate the detailed feedback. I concur that getting some more opinions on this as you suggested (Client component) would be beneficial.
> RowKey utility class for rowkey construction
> --------------------------------------------
>
> Key: HBASE-7221
> URL: https://issues.apache.org/jira/browse/HBASE-7221
> Project: HBase
> Issue Type: Improvement
> Components: util
> Reporter: Doug Meil
> Assignee: Doug Meil
> Priority: Minor
> Attachments: HBASE_7221.patch, hbase-common_hbase_7221_2.patch, hbase-common_hbase_7221_v3.patch, hbase-common_hbase_7221_v4.patch, hbase-server_hbase_7221_v5.patch, hbase-server_hbase_7221_v6.patch
>
>
> A common question in the dist-lists is how to construct rowkeys, particularly composite keys. Put/Get/Scan specifies byte[] as the rowkey, but it's up to you to sensibly populate that byte-array, and that's where things tend to go off the rails.
> The intent of this RowKey utility class isn't meant to add functionality into Put/Get/Scan, but rather make it simpler for folks to construct said arrays. Example:
> {code}
> RowKey key = RowKey.create(RowKey.SIZEOF_MD5_HASH + RowKey.SIZEOF_LONG);
> key.addHash(a);
> key.add(b);
> byte bytes[] = key.getBytes();
> {code}
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