1 /**
2 * Copyright 2007 The Apache Software Foundation
3 *
4 * Licensed to the Apache Software Foundation (ASF) under one
5 * or more contributor license agreements. See the NOTICE file
6 * distributed with this work for additional information
7 * regarding copyright ownership. The ASF licenses this file
8 * to you under the Apache License, Version 2.0 (the
9 * "License"); you may not use this file except in compliance
10 * with the License. You may obtain a copy of the License at
11 *
12 * http://www.apache.org/licenses/LICENSE-2.0
13 *
14 * Unless required by applicable law or agreed to in writing, software
15 * distributed under the License is distributed on an "AS IS" BASIS,
16 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
17 * See the License for the specific language governing permissions and
18 * limitations under the License.
19 */
20 package org.apache.hadoop.hbase.util;
21
22 import java.util.HashSet;
23 import java.util.Set;
24
25 /**
26 * Certain JVM versions are known to be unstable with HBase. This
27 * class has a utility function to determine whether the current JVM
28 * is known to be unstable.
29 */
30 public abstract class JvmVersion {
31 private static Set<String> BAD_JVM_VERSIONS = new HashSet<String>();
32 static {
33 BAD_JVM_VERSIONS.add("1.6.0_18");
34 }
35
36 /**
37 * Return true if the current JVM is known to be unstable.
38 */
39 public static boolean isBadJvmVersion() {
40 String version = System.getProperty("java.version");
41 return version != null && BAD_JVM_VERSIONS.contains(version);
42 }
43 }