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hadoop-mapreduce-client-core

library3.5.0javamavenunverified

Core client library for Apache Hadoop MapReduce, providing APIs for writing and running MapReduce jobs on Hadoop clusters.

other

<dependency>
  <groupId>org.apache.hadoop</groupId>
  <artifactId>hadoop-mapreduce-client-core</artifactId>
  <version>3.5.0</version>
</dependency>

docs ↗

INSTALL

IMPORT

SIG · HADOOP-MAPREDUCE-C

hadoop-mapreduce-client-core

otherjavav3.5.0

harness data pending

Install & Compatibility

Where this runs

No compatibility data collected yet for this library.

Code

Verified usage

Verified import paths — ran on the pinned version, not inferred.

Job

✓ org.apache.hadoop.mapreduce.Job

Minimal Hadoop MapReduce job setup using Job class.

import org.apache.hadoop.mapreduce.Job; import org.apache.hadoop.conf.Configuration; Configuration conf = new Configuration(); Job job = Job.getInstance(conf, "my job"); job.setJarByClass(MyClass.class); job.setMapperClass(MyMapper.class); job.setReducerClass(MyReducer.class); System.exit(job.waitForCompletion(true) ? 0 : 1);

Debug

Known issues

breakingHadoop 3.x has breaking changes from 2.x, including API removals and configuration changes.

fix

Check migration guide from Hadoop 2 to 3 for deprecated APIs.

affects: >=3.0.0

Upgrade

Version history

3.5.0latest on Maven

Audit

Dependencies

No dependency data recorded yet.

Agent activity

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