Question

在命令行中发出count或unique之类的命令我收到异常并从控制台启动不知道在哪里检查整个日志，但这里是摘录

Exception in thread "main" java.lang.NoClassDefFoundError: scala/collection/Iterable
        at org.apache.hadoop.hive.ql.optimizer.spark.SetSparkReducerParallelism.process(SetSparkReducerParallelism.java:117)
        at org.apache.hadoop.hive.ql.lib.DefaultRuleDispatcher.dispatch(DefaultRuleDispatcher.java:90)
        at org.apache.hadoop.hive.ql.lib.DefaultGraphWalker.dispatchAndReturn(DefaultGraphWalker.java:105)
        at org.apache.hadoop.hive.ql.lib.DefaultGraphWalker.dispatch(DefaultGraphWalker.java:89)
        at org.apache.hadoop.hive.ql.lib.DefaultGraphWalker.walk(DefaultGraphWalker.java:158)
        at org.apache.hadoop.hive.ql.lib.DefaultGraphWalker.startWalking(DefaultGraphWalker.java:120)
        at org.apache.hadoop.hive.ql.parse.spark.SparkCompiler.runJoinOptimizations(SparkCompiler.java:178)
        at org.apache.hadoop.hive.ql.parse.spark.SparkCompiler.optimizeOperatorPlan(SparkCompiler.java:116)
        at org.apache.hadoop.hive.ql.parse.TaskCompiler.compile(TaskCompiler.java:134)
        at org.apache.hadoop.hive.ql.parse.SemanticAnalyzer.analyzeInternal(SemanticAnalyzer.java:10857)
        at org.apache.hadoop.hive.ql.parse.CalcitePlanner.analyzeInternal(CalcitePlanner.java:239)
        at org.apache.hadoop.hive.ql.parse.BaseSemanticAnalyzer.analyze(BaseSemanticAnalyzer.java:250)
        at org.apache.hadoop.hive.ql.Driver.compile(Driver.java:437)
        at org.apache.hadoop.hive.ql.Driver.compile(Driver.java:329)
        at org.apache.hadoop.hive.ql.Driver.compileInternal(Driver.java:1158)
        at org.apache.hadoop.hive.ql.Driver.runInternal(Driver.java:1253)
        at org.apache.hadoop.hive.ql.Driver.run(Driver.java:1084)
        at org.apache.hadoop.hive.ql.Driver.run(Driver.java:1072)
        at org.apache.hadoop.hive.cli.CliDriver.processLocalCmd(CliDriver.java:232)
        at org.apache.hadoop.hive.cli.CliDriver.processCmd(CliDriver.java:183)
        at org.apache.hadoop.hive.cli.CliDriver.processLine(CliDriver.java:399)
        at org.apache.hadoop.hive.cli.CliDriver.executeDriver(CliDriver.java:776)
        at org.apache.hadoop.hive.cli.CliDriver.run(CliDriver.java:714)
        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:221)
        at org.apache.hadoop.util.RunJar.main(RunJar.java:136)
Caused by: java.lang.ClassNotFoundException: scala.collection.Iterable
        at java.net.URLClassLoader.findClass(URLClassLoader.java:381)
        at java.lang.ClassLoader.loadClass(ClassLoader.java:424)
        at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:331)
        at java.lang.ClassLoader.loadClass(ClassLoader.java:357)
        ... 30 more

Answer 1

这个问题通常是因为classpath配置问题，试试这个可能很有用

第1步：在$ HIVE_HOME / bin / hive中找到此代码（也许备份此文件更好）：

CLASSPATH=${CLASSPATH}:${HIVE_LIB}/*.jar

for f in ${HIVE_LIB}/*.jar; do
    CLASSPATH=${CLASSPATH}:$f;
done

第2步：添加spark lib，如hive_lib

for f in ${SPARK_HOME}/jars/*.jar; do
     CLASSPATH=${CLASSPATH}:$f;
done

之后，hive可执行文件看起来像这样

for f in ${HIVE_LIB}/*.jar; do
    CLASSPATH=${CLASSPATH}:$f;
done


for f in ${SPARK_HOME}/jars/*.jar; do
     CLASSPATH=${CLASSPATH}:$f;
done

SPARK_HOME指向你的火花安装位置，因为我使用了火花2.0.0，火花库是$ {SPARK_HOME} /罐子，我发现谷歌的一些答案，但这些并没有真正解决我的问题，所以我修改了蜂巢可执行的shell脚本并添加spark lib，适合我，希望能帮到你

Apache配置单元异常noClassDefFoundError：scala / collection / iterable

1 个答案: