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Clone map of name->uuid when writing to file. Educated-guess for a fix for #213.

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This commit is contained in:
Ali Moghnieh 2015-11-30 19:51:22 +00:00
parent bc4737562d
commit 4a0507a838
1 changed files with 10 additions and 4 deletions
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12
Essentials/src/com/earth2me/essentials/UUIDMap.java
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@ -5,6 +5,7 @@ import org.bukkit.Bukkit;
import java.io.*;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.Map;
import java.util.UUID;
import java.util.concurrent.*;
@ -95,10 +96,15 @@ public class UUIDMap {
}
public Future<?> _writeUUIDMap() {
final ConcurrentSkipListMap<String, UUID> names = ess.getUserMap().getNames();
Map<String, UUID> names = ess.getUserMap().getNames();
if (names.size() < 1) {
return null;
}
// The _names_ Map is being shallowly cloned because of an issue that occurs during restarts/reloads that
// causes UserMap database to be cleared. The assumed culprit is names.clear() when loading in UserMap.
//
// For more information, please refer to #213.
names = new HashMap<>(names);
pendingDiskWrites.incrementAndGet();
Future<?> future = EXECUTOR_SERVICE.submit(new WriteRunner(ess.getDataFolder(), userList, names, pendingDiskWrites));
return future;
@ -108,10 +114,10 @@ public class UUIDMap {
private static class WriteRunner implements Runnable {
private final File location;
private final File endFile;
private final ConcurrentSkipListMap<String, UUID> names;
private final Map<String, UUID> names;
private final AtomicInteger pendingDiskWrites;
private WriteRunner(final File location, final File endFile, final ConcurrentSkipListMap<String, UUID> names, final AtomicInteger pendingDiskWrites) {
private WriteRunner(final File location, final File endFile, final Map<String, UUID> names, final AtomicInteger pendingDiskWrites) {
this.location = location;
this.endFile = endFile;
this.names = names;