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HDFS-14840. Use Java Conccurent Instead of Synchronization in BlockPoolTokenSecretManager. Contributed by David Mollitor.

This commit is contained in:
Akira Ajisaka 2019-09-12 12:41:57 +09:00
parent 3b06f0bf9e
commit 68612a0410
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1 changed files with 8 additions and 9 deletions
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17
hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/security/token/block/BlockPoolTokenSecretManager.java
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@ -19,8 +19,8 @@ package org.apache.hadoop.hdfs.security.token.block;
import java.io.IOException;
import java.util.EnumSet;
import java.util.HashMap;
import java.util.Map;
import java.util.concurrent.ConcurrentHashMap;
import org.apache.hadoop.hdfs.protocol.ExtendedBlock;
import org.apache.hadoop.hdfs.security.token.block.BlockTokenIdentifier.AccessMode;
@ -37,30 +37,29 @@ import org.apache.hadoop.fs.StorageType;
public class BlockPoolTokenSecretManager extends
SecretManager<BlockTokenIdentifier> {
private final Map<String, BlockTokenSecretManager> map =
new HashMap<String, BlockTokenSecretManager>();
private final Map<String, BlockTokenSecretManager> map =
new ConcurrentHashMap<>();
/**
* Add a block pool Id and corresponding {@link BlockTokenSecretManager} to map
* @param bpid block pool Id
* @param secretMgr {@link BlockTokenSecretManager}
*/
public synchronized void addBlockPool(String bpid,
BlockTokenSecretManager secretMgr) {
public void addBlockPool(String bpid, BlockTokenSecretManager secretMgr) {
map.put(bpid, secretMgr);
}
@VisibleForTesting
public synchronized BlockTokenSecretManager get(String bpid) {
public BlockTokenSecretManager get(String bpid) {
BlockTokenSecretManager secretMgr = map.get(bpid);
if (secretMgr == null) {
throw new IllegalArgumentException("Block pool " + bpid
+ " is not found");
throw new IllegalArgumentException(
"Block pool " + bpid + " is not found");
}
return secretMgr;
}
public synchronized boolean isBlockPoolRegistered(String bpid) {
public boolean isBlockPoolRegistered(String bpid) {
return map.containsKey(bpid);
}