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Date: Sun, 12 Feb 2012 14:12:59 +0000 (UTC)
From: "ronghai.ma (Commented) (JIRA)" <jira@apache.org>
To: issues@hbase.apache.org
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Subject: [jira] [Commented] (HBASE-5388) tunning getCachedLocation method
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    [ https://issues.apache.org/jira/browse/HBASE-5388?page=3Dcom.atlassian=
.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=3D1320=
6422#comment-13206422 ]=20

ronghai.ma commented on HBASE-5388:
-----------------------------------

My pleasure, and two questions:
1. the svn location
2. my account

Yes, measeured in excution time.
               =20
> tunning getCachedLocation method
> --------------------------------
>
>                 Key: HBASE-5388
>                 URL: https://issues.apache.org/jira/browse/HBASE-5388
>             Project: HBase
>          Issue Type: Improvement
>            Reporter: ronghai.ma
>
> About 75% improvement=E3=80=82
> 1. Add a method in SoftValueSortedMap
> public synchronized <K, V> Entry<K, V> lowerEntry(K key) {
>   return ((TreeMap) this.internalMap).lowerEntry(key);
> }
> 2. Modify getCachedLocation=20
> Map.Entry<byte[], HRegionLocation> tEntry =3D tableLocations.lowerEntry(r=
ow);
>   if (tEntry !=3D null) {
>   HRegionLocation possibleRegion =3D tEntry.getValue();
>   //other code
> }

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