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 * Utility class to get and check the current JVM version. 029 */ 030@InterfaceAudience.Private 031@InterfaceStability.Stable 032public abstract class JvmVersion { 033 private static Set<String> BAD_JVM_VERSIONS = new HashSet<>(); 034 static { 035 BAD_JVM_VERSIONS.add("1.6.0_18"); 036 } 037 038 /** 039 * Return true if the current JVM version is known to be unstable with HBase. 040 */ 041 public static boolean isBadJvmVersion() { 042 String version = System.getProperty("java.version"); 043 return version != null && BAD_JVM_VERSIONS.contains(version); 044 } 045 046 /** 047 * Return the current JVM version information. 048 */ 049 public static String getVersion() { 050 return System.getProperty("java.vm.vendor", "UNKNOWN_VM_VENDOR") + ' ' + 051 System.getProperty("java.version", "UNKNOWN_JAVA_VERSION") + '-' + 052 System.getProperty("java.vm.version", "UNKNOWN_VM_VERSION"); 053 } 054}