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POMapReduce jobs in hive-0.8.1-cdh4.0.1 Failed.
 

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  1. POMapReduce jobs in hive-0.8.1-cdh4.0.1 Failed.
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    <p>Queries in <strong>hive-0.8.1-cdh4.0.1</strong> that invoke the Reducer results in Task Failed. The queries having MAPJOIn is working fine but JOIN gives error.</p> <p>eg:</p> <pre><code> hive&gt; select count(*) from table1; Total MapReduce jobs = 1 Launching Job 1 out of 1 Number of reduce tasks determined at compile time: 1 12/10/15 23:07:02 WARN conf.Configuration: mapred.job.name is deprecated. Instead, use mapreduce.job.name 12/10/15 23:07:02 WARN conf.Configuration: mapred.system.dir is deprecated. Instead, use mapreduce.jobtracker.system.dir 12/10/15 23:07:02 WARN conf.Configuration: mapred.local.dir is deprecated. Instead, use mapreduce.cluster.local.dir 12/10/15 23:07:02 WARN conf.HiveConf: hive-site.xml not found on CLASSPATH WARNING: org.apache.hadoop.metrics.jvm.EventCounter is deprecated. Please use org.apache.hadoop.log.metrics.EventCounter in all the log4j.properties files. Execution log at: /tmp/XXXX /XXXX_20121015230707_c93521d0-4a97-4972-92b9-0fdd3ab42e5f.log SLF4J: Class path contains multiple SLF4J bindings. SLF4J: Found binding in [jar:file:/home/XXXX/hadoop-2.0.0-cdh4.0.1/share/hadoop/common/lib/slf4j-log4j12-1.6.1.jar!/org/slf4j/impl/StaticLoggerBinder.class] SLF4J: Found binding in [jar:file:/home/XXXX/hive-0.8.1-cdh4.0.1/lib/slf4j-log4j12-1.6.1.jar!/org/slf4j/impl/StaticLoggerBinder.class] SLF4J: See &lt;http://www.slf4j.org/codes.html#multiple_bindings&gt; for an explanation. Job running in-process (local Hadoop) Hadoop job information for null: number of mappers: 0; number of reducers: 0 2012-10-15 23:07:04,721 null map = 0%, reduce = 0% Ended Job = job_local_0001 with errors Error during job, obtaining debugging information... **Execution failed with exit status: 2** Obtaining error information **Task failed!** Task ID: Stage-1 Logs: /tmp/XXXX/hive.log FAILED: Execution Error, return code 2 from org.apache.hadoop.hive.ql.exec.MapRedTask </code></pre> <p>The log file shows that its due to Java heap space problem.</p> <pre><code>**java.lang.Exception: java.lang.OutOfMemoryError: Java heap space** at org.apache.hadoop.mapred.LocalJobRunner$Job.run(LocalJobRunner.java:400) Caused by: java.lang.OutOfMemoryError: Java heap space at org.apache.hadoop.mapred.MapTask$MapOutputBuffer.&lt;init&gt;(MapTask.java:912) at org.apache.hadoop.mapred.MapTask.runOldMapper(MapTask.java:391) at org.apache.hadoop.mapred.MapTask.run(MapTask.java:334) at org.apache.hadoop.mapred.LocalJobRunner$Job$MapTaskRunnable.run(LocalJobRunner.java:232) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:441) at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:303) at java.util.concurrent.FutureTask.run(FutureTask.java:138) at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908) at java.lang.Thread.run(Thread.java:662) </code></pre>
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