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https://issues.apache.org/jira/browse/HBASE-5388?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13206431#comment-13206431
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Zhihong Yu commented on HBASE-5388:
-----------------------------------
Here you can find source location:
http://hbase.apache.org/source-repository.html
> tunning getCachedLocation method
> --------------------------------
>
> Key: HBASE-5388
> URL: https://issues.apache.org/jira/browse/HBASE-5388
> Project: HBase
> Issue Type: Improvement
> Affects Versions: 0.90.5
> Reporter: ronghai.ma
> Labels: patch
>
> About 75% improvement。
> 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
> Map.Entry<byte[], HRegionLocation> tEntry = tableLocations.lowerEntry(row);
> if (tEntry != null) {
> HRegionLocation possibleRegion = tEntry.getValue();
> //other code
> }
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