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HBASE-11707 Using Map instead of list in FailedServers of RpcClient (Liu Shaohui) 

Signed-off-by: Michael Stack <stack@apache.org>
This commit is contained in:
Michael Stack 2017-06-30 12:08:45 -07:00
parent 549fb1677b
commit f4c99a6a89
1 changed files with 19 additions and 17 deletions
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34
hbase-client/src/main/java/org/apache/hadoop/hbase/ipc/FailedServers.java
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@ -18,8 +18,10 @@
package org.apache.hadoop.hbase.ipc; package org.apache.hadoop.hbase.ipc;
import java.net.InetSocketAddress; import java.net.InetSocketAddress;
import java.util.HashMap;
import java.util.Iterator; import java.util.Iterator;
import java.util.LinkedList; import java.util.LinkedList;
import java.util.Map;
import org.apache.hadoop.conf.Configuration; import org.apache.hadoop.conf.Configuration;
import org.apache.hadoop.hbase.classification.InterfaceAudience; import org.apache.hadoop.hbase.classification.InterfaceAudience;
@ -31,7 +33,8 @@ import org.apache.hadoop.hbase.util.Pair;
*/ */
@InterfaceAudience.Private @InterfaceAudience.Private
public class FailedServers { public class FailedServers {
private final LinkedList<Pair<Long, String>> failedServers = new LinkedList<>(); private final Map<String, Long> failedServers = new HashMap<String, Long>();
private long latestExpiry = 0;
private final int recheckServersTimeout; private final int recheckServersTimeout;
public FailedServers(Configuration conf) { public FailedServers(Configuration conf) {
@ -44,7 +47,8 @@ public class FailedServers {
*/ */
public synchronized void addToFailedServers(InetSocketAddress address) { public synchronized void addToFailedServers(InetSocketAddress address) {
final long expiry = EnvironmentEdgeManager.currentTime() + recheckServersTimeout; final long expiry = EnvironmentEdgeManager.currentTime() + recheckServersTimeout;
failedServers.addFirst(new Pair<>(expiry, address.toString())); this.failedServers.put(address.toString(), expiry);
this.latestExpiry = expiry;
} }
/** /**
@ -56,23 +60,21 @@ public class FailedServers {
if (failedServers.isEmpty()) { if (failedServers.isEmpty()) {
return false; return false;
} }
final String lookup = address.toString();
final long now = EnvironmentEdgeManager.currentTime(); final long now = EnvironmentEdgeManager.currentTime();
if (now > this.latestExpiry) {
// iterate, looking for the search entry and cleaning expired entries failedServers.clear();
Iterator<Pair<Long, String>> it = failedServers.iterator(); return false;
while (it.hasNext()) { }
Pair<Long, String> cur = it.next(); String key = address.toString();
if (cur.getFirst() < now) { Long expiry = this.failedServers.get(key);
it.remove(); if (expiry == null) {
} else { return false;
if (lookup.equals(cur.getSecond())) { }
if (expiry >= now) {
return true; return true;
} else {
this.failedServers.remove(key);
} }
}
}
return false; return false;
} }
} }