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用maven打包写好的jar，在放到hive中作临时函数时报错。
错误信息如下：
hive> create temporary function maxvalue as "com.leaf.data.Maximum";
java.lang.SecurityException: Invalid signature file digest for Manifest main attributesat sun.security.util.SignatureFileVerifier.processImpl(SignatureFileVerifier.java:240)at sun.security.util.SignatureFileVerifier.process(SignatureFileVerifier.java:193)at java.util.jar.JarVerifier.processEntry(JarVerifier.java:305)at java.util.jar.JarVerifier.update(JarVerifier.java:216)at java.util.jar.JarFile.initializeVerifier(JarFile.java:341)at java.util.jar.JarFile.getInputStream(JarFile.java:406)at sun.misc.URLClassPath$JarLoader$2.getInputStream(URLClassPath.java:752)at sun.misc.Resource.cachedInputStream(Resource.java:77)at sun.misc.Resource.getByteBuffer(Resource.java:160)at java.net.URLClassLoader.defineClass(URLClassLoader.java:436)at java.net.URLClassLoader.access$100(URLClassLoader.java:71)at java.net.URLClassLoader$1.run(URLClassLoader.java:361)at java.net.URLClassLoader$1.run(URLClassLoader.java:355)at java.security.AccessController.doPrivileged(Native Method)at java.net.URLClassLoader.findClass(URLClassLoader.java:354)at java.lang.ClassLoader.loadClass(ClassLoader.java:423)at java.lang.ClassLoader.loadClass(ClassLoader.java:356)at java.lang.Class.forName0(Native Method)at java.lang.Class.forName(Class.java:264)at org.apache.hadoop.hive.ql.exec.FunctionTask.getUdfClass(FunctionTask.java:137)at org.apache.hadoop.hive.ql.exec.FunctionTask.createFunction(FunctionTask.java:87)at org.apache.hadoop.hive.ql.exec.FunctionTask.execute(FunctionTask.java:65)at org.apache.hadoop.hive.ql.exec.Task.executeTask(Task.java:151)at org.apache.hadoop.hive.ql.exec.TaskRunner.runSequential(TaskRunner.java:65)at org.apache.hadoop.hive.ql.Driver.launchTask(Driver.java:1414)at org.apache.hadoop.hive.ql.Driver.execute(Driver.java:1192)at org.apache.hadoop.hive.ql.Driver.runInternal(Driver.java:1020)at org.apache.hadoop.hive.ql.Driver.run(Driver.java:888)at org.apache.hadoop.hive.cli.CliDriver.processLocalCmd(CliDriver.java:259)at org.apache.hadoop.hive.cli.CliDriver.processCmd(CliDriver.java:216)at org.apache.hadoop.hive.cli.CliDriver.processLine(CliDriver.java:413)at org.apache.hadoop.hive.cli.CliDriver.executeDriver(CliDriver.java:781)at org.apache.hadoop.hive.cli.CliDriver.run(CliDriver.java:675)at org.apache.hadoop.hive.cli.CliDriver.main(CliDriver.java:614)at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)at java.lang.reflect.Method.invoke(Method.java:601)at org.apache.hadoop.util.RunJar.main(RunJar.java:212)
FAILED: Execution Error, return code -101 from org.apache.hadoop.hive.ql.exec.FunctionTask此异常像是Manifest文件相关的错。
解决方法：
在jar包找到META-INF目录，删除掉以.SF结尾的文件即可。如下图：
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