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StorageService: Sort the results of getTokenToEndpointMap

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This patch takes the implementation of getTokenToEndpointMap from Origin
which sorts the map result.

Fixes scylladb/scylla#722

Signed-off-by: Amnon Heiman <amnon@scylladb.com>
Message-Id: <1456142885-20838-1-git-send-email-amnon@scylladb.com>
This commit is contained in:
Amnon Heiman 2016-02-22 14:08:05 +02:00 committed by Pekka Enberg
parent 15ad444c40
commit d589f3a3a3
1 changed files with 10 additions and 1 deletions
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11
src/main/java/org/apache/cassandra/service/StorageService.java
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@ -332,7 +332,16 @@ public class StorageService extends NotificationBroadcasterSupport
*/
public Map<String, String> getTokenToEndpointMap() {
log(" getTokenToEndpointMap()");
return c.getMapStrValue("/storage_service/tokens_endpoint");
Map<String, String> mapInetAddress = c.getMapStrValue("/storage_service/tokens_endpoint");
// in order to preserve tokens in ascending order, we use LinkedHashMap here
Map<String, String> mapString = new LinkedHashMap<>(mapInetAddress.size());
List<String> tokens = new ArrayList<>(mapInetAddress.keySet());
Collections.sort(tokens);
for (String token : tokens)
{
mapString.put(token, mapInetAddress.get(token));
}
return mapString;
}
/** Retrieve this hosts unique ID */