1 /**
2 *
3 * Licensed to the Apache Software Foundation (ASF) under one
4 * or more contributor license agreements. See the NOTICE file
5 * distributed with this work for additional information
6 * regarding copyright ownership. The ASF licenses this file
7 * to you under the Apache License, Version 2.0 (the
8 * "License"); you may not use this file except in compliance
9 * with the License. You may obtain a copy of the License at
10 *
11 * http://www.apache.org/licenses/LICENSE-2.0
12 *
13 * Unless required by applicable law or agreed to in writing, software
14 * distributed under the License is distributed on an "AS IS" BASIS,
15 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
16 * See the License for the specific language governing permissions and
17 * limitations under the License.
18 */
19 package org.apache.hadoop.hbase.util;
20
21 import java.util.HashSet;
22 import java.util.Set;
23
24 import org.apache.hadoop.hbase.classification.InterfaceAudience;
25 import org.apache.hadoop.hbase.classification.InterfaceStability;
26
27 /**
28 * Certain JVM versions are known to be unstable with HBase. This
29 * class has a utility function to determine whether the current JVM
30 * is known to be unstable.
31 */
32 @InterfaceAudience.Private
33 @InterfaceStability.Stable
34 public abstract class JvmVersion {
35 private static Set<String> BAD_JVM_VERSIONS = new HashSet<String>();
36 static {
37 BAD_JVM_VERSIONS.add("1.6.0_18");
38 }
39
40 /**
41 * Return true if the current JVM is known to be unstable.
42 */
43 public static boolean isBadJvmVersion() {
44 String version = System.getProperty("java.version");
45 return version != null && BAD_JVM_VERSIONS.contains(version);
46 }
47 }