001/**
002 *
003 * Licensed to the Apache Software Foundation (ASF) under one
004 * or more contributor license agreements.  See the NOTICE file
005 * distributed with this work for additional information
006 * regarding copyright ownership.  The ASF licenses this file
007 * to you under the Apache License, Version 2.0 (the
008 * "License"); you may not use this file except in compliance
009 * with the License.  You may obtain a copy of the License at
010 *
011 *     http://www.apache.org/licenses/LICENSE-2.0
012 *
013 * Unless required by applicable law or agreed to in writing, software
014 * distributed under the License is distributed on an "AS IS" BASIS,
015 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
016 * See the License for the specific language governing permissions and
017 * limitations under the License.
018 */
019package org.apache.hadoop.hbase.util;
020
021import java.util.HashSet;
022import java.util.Set;
023
024import org.apache.yetus.audience.InterfaceAudience;
025import org.apache.yetus.audience.InterfaceStability;
026
027/**
028 * Certain JVM versions are known to be unstable with HBase. This
029 * class has a utility function to determine whether the current JVM
030 * is known to be unstable.
031 */
032@InterfaceAudience.Private
033@InterfaceStability.Stable
034public abstract class JvmVersion {
035  private static Set<String> BAD_JVM_VERSIONS = new HashSet<>();
036  static {
037    BAD_JVM_VERSIONS.add("1.6.0_18");
038  }
039
040  /**
041   * Return true if the current JVM is known to be unstable.
042   */
043  public static boolean isBadJvmVersion() {
044    String version = System.getProperty("java.version");
045    return version != null && BAD_JVM_VERSIONS.contains(version);
046  }
047}