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https://issues.apache.org/jira/browse/HBASE-1622?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12729890#action_12729890
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stack commented on HBASE-1622:
------------------------------
I started to work on this a little but gave up because need to make a bunch of
constructors in the new KVC class. Here is what I had:
{code}
/**
* A {...@link java.lang.Comparable} KeyValue.
* Compares the Key portion only of a KeyValue. Two KeyValues that have same
* Key though different Value content will be equated.
*/
public class KeyValueComparable extends KeyValue
implements WritableComparable<KeyValue> {
private final KeyValue.KVComparator comparator;
public KeyValueComparable() {
this(null);
}
/**
* @param c Comparator to use.
*/
public KeyValueComparable(final KeyValue.KVComparator c) {
this.comparator = c == null? KeyValue.COMPARATOR: c;
}
public int compareTo(final KeyValue that) {
return this.comparator.compare(this, that);
}
}
{code}
> Make KeyValue implement the Comparable interface to make it work with
> Cascading.
> --------------------------------------------------------------------------------
>
> Key: HBASE-1622
> URL: https://issues.apache.org/jira/browse/HBASE-1622
> Project: Hadoop HBase
> Issue Type: New Feature
> Affects Versions: 0.20.0
> Reporter: Erik Holstad
> Assignee: Erik Holstad
> Priority: Minor
> Fix For: 0.20.0
>
> Attachments: HBASE-1622-v1.patch, HBASE-1622-v2.patch
>
>
> As with making Result implement the Comparable interface, this is used for
> making HBase interact tightly with cascading, so that KeyValues can be put
> into Tuples.
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