Mahout on EMR 오류 : Java 힙 공간

Question

emr에서 클러스터링 작업을 실행했습니다. 데이터 집합은 거대합니다.모든 것이 잘 작동했습니다 :

2012-09-29 10:50:58,063 INFO org.apache.hadoop.mapred.JobClient (main):  map 100% reduce 23%
2012-09-29 10:51:31,157 INFO org.apache.hadoop.mapred.JobClient (main):  map 100% reduce 24%
2012-09-29 10:51:50,197 INFO org.apache.hadoop.mapred.JobClient (main):  map 100% reduce 25%
2012-09-29 10:52:17,236 INFO org.apache.hadoop.mapred.JobClient (main):  map 100% reduce 26%
2012-09-29 10:52:41,270 INFO org.apache.hadoop.mapred.JobClient (main):  map 100% reduce 27%
2012-09-29 10:53:08,350 INFO org.apache.hadoop.mapred.JobClient (main):  map 100% reduce 28%
2012-09-29 10:53:29,377 INFO org.apache.hadoop.mapred.JobClient (main):  map 100% reduce 29%
2012-09-29 10:53:54,411 INFO org.apache.hadoop.mapred.JobClient (main):  map 100% reduce 30%
2012-09-29 10:54:21,448 INFO org.apache.hadoop.mapred.JobClient (main):  map 100% reduce 31%
2012-09-29 10:54:48,486 INFO org.apache.hadoop.mapred.JobClient (main):  map 100% reduce 32%
Error: Java heap space
attempt_201209271139_0004_r_000000_0: SLF4J: Class path contains multiple SLF4J bindings.
attempt_201209271139_0004_r_000000_0: SLF4J: Found binding in [jar:file:/home/hadoop/lib/slf4j-log4j12-1.6.1.jar!/org/slf4j/impl/StaticLoggerBinder.class]
attempt_201209271139_0004_r_000000_0: SLF4J: Found binding in [jar:file:/mnt/var/lib/hadoop/mapred/taskTracker/hadoop/jobcache/job_201209271139_0004/jars/job.jar!/org/slf4j/impl/StaticLoggerBinder.class]
attempt_201209271139_0004_r_000000_0: SLF4J: See http://www.slf4j.org/codes.html#multiple_bindings for an explanation.

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그래서.기본적인 질문은 그 문제를 해결하는 방법입니다.

Answer 1

m1.small 대신 m1.large 인스턴스를 만들었고 s3 : // elasticmapreduce / bootstrap-actions / configurations / 최신 / 메모리 집약적 인 부트 스트랩 작업을 실행했습니다.그것은 도움이되었습니다.

그래서.내 작업 흐름 생성 CMD 라인에 2 줄을 추가했습니다.

> --master-instance-type m1.large --slave-instance-type m1.large \
> --bootstrap-action s3://elasticmapreduce/bootstrap-actions/configurations/latest/memory-intensive

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