HBASE-10143 replace WritableFactories's hashmap with ConcurrentHashMap (Liang Xie via Stack)
git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/branches/branch-2@1559924 13f79535-47bb-0310-9956-ffa450edef68
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@ -136,6 +136,9 @@ Release 2.4.0 - UNRELEASED
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HADOOP-10228. FsPermission#fromShort() should cache FsAction.values().
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(Haohui Mai via cnauroth)
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HADOOP-10143 replace WritableFactories's hashmap with ConcurrentHashMap
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(Liang Xie via stack)
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BUG FIXES
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HADOOP-9964. Fix deadlocks in TestHttpServer by synchronize
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@ -22,25 +22,26 @@ import org.apache.hadoop.classification.InterfaceAudience;
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import org.apache.hadoop.classification.InterfaceStability;
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import org.apache.hadoop.conf.*;
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import org.apache.hadoop.util.ReflectionUtils;
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import java.util.HashMap;
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import java.util.Map;
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import java.util.concurrent.ConcurrentHashMap;
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/** Factories for non-public writables. Defining a factory permits {@link
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* ObjectWritable} to be able to construct instances of non-public classes. */
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@InterfaceAudience.Public
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@InterfaceStability.Stable
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public class WritableFactories {
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private static final HashMap<Class, WritableFactory> CLASS_TO_FACTORY =
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new HashMap<Class, WritableFactory>();
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private static final Map<Class, WritableFactory> CLASS_TO_FACTORY =
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new ConcurrentHashMap<Class, WritableFactory>();
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private WritableFactories() {} // singleton
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/** Define a factory for a class. */
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public static synchronized void setFactory(Class c, WritableFactory factory) {
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public static void setFactory(Class c, WritableFactory factory) {
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CLASS_TO_FACTORY.put(c, factory);
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}
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/** Define a factory for a class. */
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public static synchronized WritableFactory getFactory(Class c) {
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public static WritableFactory getFactory(Class c) {
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return CLASS_TO_FACTORY.get(c);
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}
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