安装Hive过程中，出现Exception in thread "main" java.lang.IllegalArgumentException: java.net.URISyntaxExcepti

一，在安装hive过程中，输入hive命令，出现了如下错误：

Exception in thread "main" java.lang.IllegalArgumentException: java.net.URISyntaxException: Relative path in absolute URI: ${system:java.io.tmpdir%7D/$%7Bsystem:user.name%7D    at org.apache.hadoop.fs.Path.initialize(Path.java:254)    at org.apache.hadoop.fs.Path.<init>(Path.java:212)    at org.apache.hadoop.hive.ql.session.SessionState.createSessionDirs(SessionState.java:644)    at org.apache.hadoop.hive.ql.session.SessionState.start(SessionState.java:563)    at org.apache.hadoop.hive.ql.session.SessionState.beginStart(SessionState.java:531)    at org.apache.hadoop.hive.cli.CliDriver.run(CliDriver.java:705)    at org.apache.hadoop.hive.cli.CliDriver.main(CliDriver.java:641)    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)    at java.lang.reflect.Method.invoke(Method.java:498)    at org.apache.hadoop.util.RunJar.run(RunJar.java:234)    at org.apache.hadoop.util.RunJar.main(RunJar.java:148)Caused by: java.net.URISyntaxException: Relative path in absolute URI: ${system:java.io.tmpdir%7D/$%7Bsystem:user.name%7D    at java.net.URI.checkPath(URI.java:1823)    at java.net.URI.<init>(URI.java:745)    at org.apache.hadoop.fs.Path.initialize(Path.java:251)    ... 12 more

二，出现的原因：
１，hive-site.xml里的临时目录没有设置好，一共有三个：

<property>    <name>Hive.exec.local.scratchdir</name>    <value>${system:Java.io.tmpdir}/${system:user.name}</value>    <description>Local scratch space for Hive jobs</description>  </property>  <property>    <name>hive.downloaded.resources.dir</name>    <value>${system:java.io.tmpdir}/${hive.session.id}_resources</value>    <description>Temporary local directory for added resources in the remote file system.</description>  </property><property>    <name>hive.server2.logging.operation.log.location</name>    <value>/home/lch/software/Hive/apache-hive-2.1.1-bin/tmp/${system:user.name}/operation_logs</value>    <description>Top level directory where operation logs are stored if logging functionality is enabled</description>  </property>

三，解决的方法：

１，将hive-site.xml文件中的${system:java.io.tmpdir}替换为hive的临时目录，例如我替换为/home/lch/software/Hive/apache-hive-2.1.1-bin/tmp/，该目录（tmp)如果不存在则要自己手工创建，并且赋予读写权限。

2,　具体修改如下：

<property>    <name>Hive.exec.local.scratchdir</name>    <value>/home/lch/software/Hive/apache-hive-2.1.1-bin/tmp//${system:user.name}</value>    <description>Local scratch space for Hive jobs</description>  </property>  <property>    <name>hive.downloaded.resources.dir</name>    <value>/home/lch/software/Hive/apache-hive-2.1.1-bin/tmp/${hive.session.id}_resources</value>    <description>Temporary local directory for added resources in the remote file system.</description>  </property><property>    <name>hive.server2.logging.operation.log.location</name>    <value>/home/lch/software/Hive/apache-hive-2.1.1-bin/tmp/ｒｏｏｔ/operation_logs</value>    <description>Top level directory where operation logs are stored if logging functionality is enabled</description>  </property>

问题就解决了．