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HDFS-10335 Mover$Processor#chooseTarget() always chooses the first matching target storage group. Contributed by Mingliang Liu

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Tsz-Wo Nicholas Sze 2016-04-29 11:22:33 -07:00
parent 9d4d30243b
commit 4da6f69ca1
1 changed files with 3 additions and 1 deletions
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hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/mover/Mover.java
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@ -478,7 +478,9 @@ boolean chooseTarget(DBlock db, Source source,
List<StorageType> targetTypes, Matcher matcher) { List<StorageType> targetTypes, Matcher matcher) {
final NetworkTopology cluster = dispatcher.getCluster(); final NetworkTopology cluster = dispatcher.getCluster();
for (StorageType t : targetTypes) { for (StorageType t : targetTypes) {
for(StorageGroup target : storages.getTargetStorages(t)) { final List<StorageGroup> targets = storages.getTargetStorages(t);
Collections.shuffle(targets);
for (StorageGroup target : targets) {
if (matcher.match(cluster, source.getDatanodeInfo(), if (matcher.match(cluster, source.getDatanodeInfo(),
target.getDatanodeInfo())) { target.getDatanodeInfo())) {
final PendingMove pm = source.addPendingMove(db, target); final PendingMove pm = source.addPendingMove(db, target);