apache spark - Hive error : Exception in thread "main" java.lang.NoClassDefFoundError: scala/collection/Iterable

Question

I am facing an error when I try to query a table in hive when hive uses spark. For example, when I do:

select count(*) from ma_table;

I get this:

Exception in thread "main" java.lang.NoClassDefFoundError: scala/collection/Iterable
    at org.apache.hadoop.hive.ql.parse.spark.GenSparkProcContext.<init>(GenSparkProcContext.java:163)
    at org.apache.hadoop.hive.ql.parse.spark.SparkCompiler.generateTaskTree(SparkCompiler.java:195)
    at org.apache.hadoop.hive.ql.parse.TaskCompiler.compile(TaskCompiler.java:267)
    at org.apache.hadoop.hive.ql.parse.SemanticAnalyzer.analyzeInternal(SemanticAnalyzer.java:10947)
    at org.apache.hadoop.hive.ql.parse.CalcitePlanner.analyzeInternal(CalcitePlanner.java:246)
    at org.apache.hadoop.hive.ql.parse.BaseSemanticAnalyzer.analyze(BaseSemanticAnalyzer.java:250)
    at org.apache.hadoop.hive.ql.Driver.compile(Driver.java:477)
    at org.apache.hadoop.hive.ql.Driver.compileInternal(Driver.java:1242)
    at org.apache.hadoop.hive.ql.Driver.runInternal(Driver.java:1384)
    at org.apache.hadoop.hive.ql.Driver.run(Driver.java:1171)
    at org.apache.hadoop.hive.ql.Driver.run(Driver.java:1161)
    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:234)
    at org.apache.hadoop.util.RunJar.main(RunJar.java:148)
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:335)
    at java.lang.ClassLoader.loadClass(ClassLoader.java:357)
    ... 23 more

After some research, I tried to had this to my bashrc (and sourced it ;) ) :

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


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


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

I checked and I have all these jars in the CLASSPATH and still get the error. I am using Hive 2.1, Hadoop 2.8 and Spark 2.1. Any ideas? Thanks a lot by advance!

Answer 1

After coming back to it, I found that scala jars files weren't in the lib of Hive. If you are facing something similar, have a look there: https://www.linkedin.com/pulse/hive-spark-configuration-common-issues-mohamed-k