[
https://issues.apache.org/jira/browse/HBASE-5388?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Zhihong Yu updated HBASE-5388:
------------------------------
Description:
About 75% improvement in execution time.
1. Add a method in SoftValueSortedMap
{code}
public synchronized <K, V> Entry<K, V> lowerEntry(K key) {
return ((TreeMap) this.internalMap).lowerEntry(key);
}
{code}
2. Modify getCachedLocation
{code}
Map.Entry<byte[], HRegionLocation> tEntry = tableLocations.lowerEntry(row);
if (tEntry != null) {
HRegionLocation possibleRegion = tEntry.getValue();
//other code
}
{code}
was:
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
}
Release Note: (was: 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 })
> 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 in execution time.
> 1. Add a method in SoftValueSortedMap
> {code}
> public synchronized <K, V> Entry<K, V> lowerEntry(K key) {
> return ((TreeMap) this.internalMap).lowerEntry(key);
> }
> {code}
> 2. Modify getCachedLocation
> {code}
> Map.Entry<byte[], HRegionLocation> tEntry = tableLocations.lowerEntry(row);
> if (tEntry != null) {
> HRegionLocation possibleRegion = tEntry.getValue();
> //other code
> }
> {code}
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