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HBASE-10585 Avoid early creation of Node objects in LRUDictionary.BidirectionalLRUMap.(Anoop) 

git-svn-id: https://svn.apache.org/repos/asf/hbase/trunk@1570672 13f79535-47bb-0310-9956-ffa450edef68
This commit is contained in:
anoopsamjohn 2014-02-21 19:14:57 +00:00
parent b0c77d1d7e
commit 0aa78ca07b
1 changed files with 8 additions and 12 deletions
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20
hbase-common/src/main/java/org/apache/hadoop/hbase/io/util/LRUDictionary.java
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@ -87,9 +87,6 @@ public class LRUDictionary implements Dictionary {
public BidirectionalLRUMap(int initialSize) {
initSize = initialSize;
indexToNode = new Node[initialSize];
for (int i = 0; i < initialSize; i++) {
indexToNode[i] = new Node();
}
}
private short put(byte[] array, int offset, int length) {
@ -100,6 +97,9 @@ public class LRUDictionary implements Dictionary {
if (currSize < initSize) {
// There is space to add without evicting.
if (indexToNode[currSize] == null) {
indexToNode[currSize] = new Node();
}
indexToNode[currSize].setContents(stored, 0, stored.length);
setHead(indexToNode[currSize]);
short ret = (short) currSize++;
@ -172,19 +172,15 @@ public class LRUDictionary implements Dictionary {
}
private void clear() {
for (int i = 0; i < currSize; i++) {
indexToNode[i].next = null;
indexToNode[i].prev = null;
indexToNode[i].container = null;
}
currSize = 0;
nodeToIndex.clear();
tail = null;
head = null;
for (Node n : indexToNode) {
n.container = null;
}
for (int i = 0; i < initSize; i++) {
indexToNode[i].next = null;
indexToNode[i].prev = null;
}
}
private static class Node {