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Posted to dev@hbase.apache.org by "chunhui shen (JIRA)" <ji...@apache.org> on 2013/02/20 11:39:13 UTC
[jira] [Created] (HBASE-7887) Support configuring KeyValue
Comparator as table
chunhui shen created HBASE-7887:
-----------------------------------
Summary: Support configuring KeyValue Comparator as table
Key: HBASE-7887
URL: https://issues.apache.org/jira/browse/HBASE-7887
Project: HBase
Issue Type: New Feature
Components: regionserver
Affects Versions: 0.96.0
Reporter: chunhui shen
Assignee: chunhui shen
Fix For: 0.96.0
Now, KeyValue Comparator is static by code in HRegionInfo
{code}
public KVComparator getComparator() {
return isRootRegion()? KeyValue.ROOT_COMPARATOR: isMetaRegion()?
KeyValue.META_COMPARATOR: KeyValue.COMPARATOR;
}
{code}
In some user cases, we need a personalized KeyValue Comparator.
e.g. Current ByteArrayComparator couldn't be used to sort number if exists negative number.(Because the bytes of -1 is bigger than the bytes of any other number)
I think supporting per-table configuration of KeyValue Comparator would be useful.
Welcome comments,
I will make the patch tomorrow.
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