Exception in thread “main” java.lang.IncompatibleClassChangeError: Found interface org.apache.hadoop.mapreduce.JobContext, but class was expected

Issue:

While configuring Sqoop (Sqoop: Downloaded was 1.4.6) on HDFS (Hadoop: 2.7.2), I encountered the below error,

Exception in thread “main” java.lang.IncompatibleClassChangeError: Found interface org.apache.hadoop.mapreduce.JobContext, but class was expected        at org.apache.sqoop.config.ConfigurationHelper.getJobNumMaps(ConfigurationHelper.java:65)        at com.cloudera.sqoop.config.ConfigurationHelper.getJobNumMaps(ConfigurationHelper.java:36)        at org.apache.sqoop.mapreduce.db.DataDrivenDBInputFormat.getSplits(DataDrivenDBInputFormat.java:125)

Cause:

Could be something to do with versions conflict between Sqoop and Hadoop

Resolution:

The version of Sqoop (1.4.6) that was downloaded was for Hadoop 1, so, you may have to pick the right version of Sqoop + Hadoop combination to overcome the issue.Below is the snapshot for your reference.

 

sqhd

 

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