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Java开发HBase程序报错：HADOOP_HOME or hadoop.home.dir are not set.
1.报错
16:36:44.271 [main] DEBUG org.apache.hadoop.util.Shell - Failed to detect a valid hadoop home directory
java.io.IOException: HADOOP_HOME or hadoop.home.dir are not set.
at org.apache.hadoop.util.Shell.checkHadoopHome(Shell.java:302) [hadoop-common-2.6.4.jar:na]
at org.apache.hadoop.util.Shell.<clinit>(Shell.java:327) [hadoop-common-2.6.4.jar:na]
at org.apache.hadoop.util.StringUtils.<clinit>(StringUtils.java:79) [hadoop-common-2.6.4.jar:na]
at org.apache.hadoop.security.Groups.parseStaticMapping(Groups.java:116) [hadoop-common-2.6.4.jar:na]
at org.apache.hadoop.security.Groups.<init>(Groups.java:93) [hadoop-common-2.6.4.jar:na]
at org.apache.hadoop.security.Groups.<init>(Groups.java:73) [hadoop-common-2.6.4.jar:na]
at org.apache.hadoop.security.Groups.getUserToGroupsMappingService(Groups.java:293) [hadoop-common-2.6.4.jar:na]
at org.apache.hadoop.security.Groups.getUserToGroupsMappingService(Groups.java:278) [hadoop-common-2.6.4.jar:na]
at org.apache.hadoop.hbase.security.UserProvider.<clinit>(UserProvider.java:56) [hbase-common-1.4.0.jar:1.4.0]
at org.apache.hadoop.hbase.client.ConnectionFactory.createConnection(ConnectionFactory.java:214) [hbase-client-1.4.0.jar:1.4.0]
at org.apache.hadoop.hbase.client.ConnectionFactory.createConnection(ConnectionFactory.java:119) [hbase-client-1.4.0.jar:1.4.0]
at utils.HBaseUtils.<clinit>(HBaseUtils.java:26) [classes/:na]
at Test.HBaseTest.main(HBaseTest.java:12) [classes/:na]
16:36:44.272 [main] ERROR org.apache.hadoop.util.Shell - Failed to locate the winutils binary in the hadoop binary path
java.io.IOException: Could not locate executable null\bin\winutils.exe in the Hadoop binaries.
at org.apache.hadoop.util.Shell.getQualifiedBinPath(Shell.java:355) [hadoop-common-2.6.4.jar:na]
at org.apache.hadoop.util.Shell.getWinUtilsPath(Shell.java:370) [hadoop-common-2.6.4.jar:na]
at org.apache.hadoop.util.Shell.<clinit>(Shell.java:363) [hadoop-common-2.6.4.jar:na]
at org.apache.hadoop.util.StringUtils.<clinit>(StringUtils.java:79) [hadoop-common-2.6.4.jar:na]
at org.apache.hadoop.security.Groups.parseStaticMapping(Groups.java:116) [hadoop-common-2.6.4.jar:na]
at org.apache.hadoop.security.Groups.<init>(Groups.java:93) [hadoop-common-2.6.4.jar:na]
at org.apache.hadoop.security.Groups.<init>(Groups.java:73) [hadoop-common-2.6.4.jar:na]
at org.apache.hadoop.security.Groups.getUserToGroupsMappingService(Groups.java:293) [hadoop-common-2.6.4.jar:na]
at org.apache.hadoop.security.Groups.getUserToGroupsMappingService(Groups.java:278) [hadoop-common-2.6.4.jar:na]
at org.apache.hadoop.hbase.security.UserProvider.<clinit>(UserProvider.java:56) [hbase-common-1.4.0.jar:1.4.0]
at org.apache.hadoop.hbase.client.ConnectionFactory.createConnection(ConnectionFactory.java:214) [hbase-client-1.4.0.jar:1.4.0]
at org.apache.hadoop.hbase.client.ConnectionFactory.createConnection(ConnectionFactory.java:119) [hbase-client-1.4.0.jar:1.4.0]
at utils.HBaseUtils.<clinit>(HBaseUtils.java:26) [classes/:na]
at Test.HBaseTest.main(HBaseTest.java:12) [classes/:na]
2.解决办法
- step1：下载
winutils.exe包，链接地址：https://github.com/srccodes/hadoop-common-2.2.0-bin 。然后将其放到hadoop的包（意思就是说，windows中需要解压hadoop的安装包）的bin目录下。 - step2：在程序起始处添加语句：
System.setProperty("hadoop.home.dir", "D:\\SoftWarePackages\\BigData\\hadoop-2.6.4");