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HDFS-8862. BlockManager#excessReplicateMap should use a HashMap. (yliu)

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yliu 2015-08-18 09:23:06 +08:00
parent 51a00964da
commit 71566e2382
2 changed files with 3 additions and 2 deletions
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2
hadoop-hdfs-project/hadoop-hdfs/CHANGES.txt
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@ -820,6 +820,8 @@ Release 2.8.0 - UNRELEASED
HDFS-8845. DiskChecker should not traverse the entire tree (Chang Li via
Colin P. McCabe)
HDFS-8862. BlockManager#excessReplicateMap should use a HashMap. (yliu)
BUG FIXES
HDFS-7501. TransactionsSinceLastCheckpoint can be negative on SBNs.

3
hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/blockmanagement/BlockManager.java
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@ -33,7 +33,6 @@
import java.util.Map;
import java.util.Queue;
import java.util.Set;
import java.util.TreeMap;
import java.util.TreeSet;
import java.util.concurrent.ThreadLocalRandom;
import java.util.concurrent.atomic.AtomicLong;
@ -204,7 +203,7 @@ public int getPendingDataNodeMessageCount() {
* DataNode. We'll eventually remove these extras.
*/
public final Map<String, LightWeightLinkedSet<Block>> excessReplicateMap =
new TreeMap<String, LightWeightLinkedSet<Block>>();
new HashMap<>();
/**
* Store set of Blocks that need to be replicated 1 or more times.